• sumo-gui

From 30.000 feet#

sumo-gui is basically the same application as sumo, just extended by a graphical user interface.

• Purpose: Simulates a defined scenario
• System: portable (Linux/Windows is tested); opens a window
• Input (mandatory): A SUMO-configuration file (see sumo)
• Output: sumo-gui generates the same output as sumo
• Programming Language: C++

Usage Description#

Initial appearance of sumo-gui; may differ from what you see

Being a window-based application, sumo-gui is started by a double click with the left mouse button on Windows, on Linux probably with a single click. After this, an empty window should show up, similar to the one shown in the image.

Using either the "File->Open Simulation..." menu entry or by using the "open"-icon (), you should be able to load an existing sumo configuration file, if it has the proper extension ".sumocfg". If the sumo configuration file is erroneous, the errors are reported, otherwise your network referenced within the configuration file should be shown. Now you can start to simulate by pressing the "play" button (). The simulation works as if being started on the command line. The simulation can be halted using the "stop" button () and continued by pressing the "play" button again. When stopped, also single steps may be performed by pressing the "single step" button ().

If the simulation is running, the current simulation second is shown in the "digital digits" field, right to "Time:" (). By clicking on the word "Time:", the display can be toggled between showing <seconds> and <hour:minute:seconds>.

Next to the time display is the delay control (). This allows you to slow down the simulation by waiting for the given number of milliseconds between simulation steps.

Besides loading simulation configurations, it is also possible to load networks by using either the "File->Open Network..." menu entry or by using the "open network"-icon (). Please note, that normally sumo-gui assumes networks have the extension ".net.xml", but also accepts other extensions.

Both, the loaded simulation or the loaded network may be reloaded using the "reload" button () or the menu entry "File->Reload".

If a network or a simulation are loaded, the navigation through the network is possible with the mouse or with the keyboard. One can drag the network with the left mouse button pressed into all directions and zoom either by using the mouse wheel or by pressing the right mouse button and moving the mouse up and down. For fine grained zooming (half zoom speed) press the "Control" key while using the mouse wheel, for double speed use "Shift".

Interaction with the View#

Basic Navigation#

As soon as a network is displayed, one can interact with the view. Pressing the left mouse button within the view and moving the mouse with the button pressed, will shift the network. Moving the mouse up and down while pressing the right mouse button changes the zoom of the network. It is also possible to change the zoom by using the mouse wheel (holding Shift increases the zooming speed and holding Ctrl lowers it). Zooming is either focused on the center of the screen or on the cursor position. The zoom style can be selected with the button.

You can also control which part of the network is visible by directly setting the network coordinates which shall be at the center of the screen along with the zoom (given a value of 100 the whole network will fit onto the screen). These settings can be changed by opening the viewport editor using the button. From this editor, it is possible to save the current settings () or load previously saved ones ( within the viewport editor).

The viewport is defined as following: <viewport zoom="<ZOOM>" x="<X>" y="<Y>" angle="<ANGLE>"/>. It can be in a gui-settings file.

Pressing the center-button () from the menu bar at the top of the view, will reset the viewport so that the complete network is shown.

Breakpoints#

The simulation can be stopped automatically to allow investigating specific points in time. Breakpoints can be set via any of the following methods:

• via menu Edit->Breakpoints
• by setting option --breakpoints TIME1,TIME2,...
• by loading Configuration Files with breakpoint information
• by clicking on an underlined time value in the message/warning log area. The breakpoint will be set 5s before the time value. This offset is configurable via the 'Settings'-menu (Ctrl + H). To investigate the reason for a teleport warning, setting the offset to 305s before the teleport event is recommended.

Keyboard Shortcuts#

Various menu items are accessible via keyboard shortcuts. These are documented directly in the menu. (i.e. Ctrl + l, Ctrl + e opens the edge locator, Ctrl + d performs a single simulation step). Additional shortcuts are listed below:

• Ctrl + LeftClick: toggle selection status of object under cursor
• Arrow keys: move the view
• Ctrl + Arrow keys: move the view less
• Alt + Arrow keys: move the view a lot
• Page Up / Page Down: change simulation delay
• +/-, Keypad +/-: zoom in/out
• Home/Keypad Home: recenter view
• F9: open view settings dialog
• Shift + LeftClick:
  • vehicle: start tracking
  • rerouter: change routeProbReroute probabilities
• Double-LeftClick: stop tracking
• Ctrl + J: toggle 'show junction shapes'
• Ctrl + K: toggle 'show secondary edge shape' (loaded with option --alternative-net-file)

Object Properties / Right-Click-Functions#

Right-clicking simulation objects gives access to additional information:

• copy object id
• object parameter dialog (menu item Show Parameter)
• position information (x,y and lat,lon)
• select/deselect object

The following objects can be accessed by right-click:

• Vehicles (some attributes are only available when using a specific simulation model, i.e. MESO or sublane model)
• Persons
• Lanes
• Junctions
• Traffic Lights (by clicking on the green/red colored bars)
• Detectors
• Rerouters
• Variable Speed Signs
• POIs
• Polygons

• Simulation (by clicking the background where there is no other object). Also accessible by clicking the button.

  Note

  Simulation Parameters include all values available via verbose output such as departed, running and arrived vehicles. It also includes network statistics such as number of edges and nodes.

The following additional functions are available via right-click:

• Tracking movements (vehicles and persons)

  Note

  Tracking can be disabled via double-click or via context menu.

• Activate additional visualizations (persons and vehicles)
• Select junction foe vehicles (vehicles). Requires coloring vehicles by selection to be visible
• Close for traffic (edges and lanes)
• Set speed limit (variable speed sign)
• Switch programs (traffic lights)
• Visualize Signal Plans (traffic lights)

Plotting object properties#

All objects support the Show Parameter item in their context menu. This opens up a dialog in tabular shape as show below:

Each of the listed attributes or Generic Parameters is accompanied by one of the following symbols:

• : Attribute does not change
• : Attribute may change but cannot be plotted
• : Attribute may change and can be plotted. Left-clicking the plot symbol will open up a plotting window.

A plotting window (acceleration over time) is shown below:

Clicking on additional Attribute plot symbols opens up new plotting windows. By activating the 'Multiplot'-checkbox, any additional attribute plots will be added to that plot window instead of opening a new plot window.

When moving the mouse over a plot window, plot point closest to the mouse cursor is highlighted and its x and y values are printed in blue along the plot axes.

Selecting Objects#

sumo-gui allows for the selection of arbitrary network elements such as edges, lanes and junctions, which can be saved to a file (and also loaded from a file) for further processing. Selection is done by either choosing "Add to Selected" from the context menu (right click) of the element or by clicking left on an element while pressing the "Control" key.

The selected elements can be saved / loaded and looked at in the "Edit Selected" dialog available from the edit menu. The list contains entries of the form objectType:objectId with each of these entries on a separate line:

edge:someEdge
edge:someOtherEdge
junction:myJunction

Most network objects can be colored according to their selection status (color by selection) and selected network elements may be manipulated as a group in netedit.

Loading a selection automatically#

By setting option --selection-file FILE a selection file as described above can be given to sumo-gui at startup. Any objects that are loaded at the start of the simulation will be selected immediately. Any persons, vehicles or containers that were not loaded will be selected once they are loaded at a later simulation time.

Locating Objects#

All simulation objects can be located based on their ID by using the locate dialog . By clicking this button a sub-menu for selecting the object type is opened. The following types are available:

• Junction
• Edge
• Vehicle
• Person
• Container
• Traffic light
• Additional infrastructure for detecting or for influencing traffic.
• Point of Interest (PoI)
• Polygon

After selecting the object type, a dialog opens that provides a text box for entering the object ID. Search for objects starts after the first characters are entered until an object ID that starts with these characters is found. Once selected in the object list, the view can be centered on that object.

The button Hide unselected, restricts the object list to selected objects of that type. The Locate Menu in the main menu bar also contains a check-box that toggles whether internal edges and internal junctions shall be listed in the object locator dialog.

Screenshots#

The current view can be captured as a raster or a vector image file (called snapshot) from inside sumo-gui pressing the apposite button . If vector image file types are not available, this feature has not been activated in the build process.

Influencing the simulation#

Currently, there is only limited interaction that can be done from the GUI. This will change in the future (see below)

Switching Traffic Lights#

By right-clicking on the colored bars at an intersection, a popup-menu allows switching between all signal plans that have been loaded. The special program off is always available and can be used to switch the intersection into a priority-intersection.

Closing and Opening Edges and Lanes#

By right clicking on a lane, each lane (or the corresponding edge) can be closed for all traffic (except vClass authority and ignoring) by selecting the option Close lane or Close edge. In the same way lanes or edges can be reopened for traffic by selecting Reopen lane or Reopen edge.

Scaling the amount of Traffic#

The 'Scale Traffic' input in the top menu bar allows scaling the amount of traffic up and down. This works as for the sumo option --scale. The frequency / probability of any loaded flows is scaled in proportion and any newly loaded vehicles will be scaled as well.

Setting Vehicle Speed Factor#

When tracking a vehicle (Shift-Click on Vehicle or Vehicle context menu option 'Start Tracking'), a new speedFactor slider is shown. This slider allows setting the speedFactor to values between 0 and 2.

Setting Rerouter Probabilities#

When loading Rerouters with routeProbReroute definitions, directional arrows will be shown where the available routes diverge. Shift-Clicking on the rerouter icon or the directional arrows will set 100% probability to one of the available routes. Clicking repeatedly will cycle through the routes and again set 100% to a route.

Starting and Stopping Vehicles#

From the vehicle context menu, the current vehicle can be made to stop (at the earliest possible location with maximum deceleration). If the vehicle is currently stopped it can also be made to abort the current stop.

Removing Vehicles#

From the vehicle context menu, the current vehicle can be removed from the simulation.

Activating Detectors#

The following detectors support overriding detection From their context menu:

• inductionLoops (e1Detector): overriding sets the time since detection to 0 (as if a vehicle is standing on the detector)
• laneAreaDetector (e2Detector): overriding sets the vehicle number to 1

If the override is active, the context menu allows to reset the override.

Overriding detection can influence the operation of traffic lights (type 'actuated' and 'NEMA'). For this it is useful, the make their detectors visible.

Planned Interactions#

In the future more interactions are planned for exploratory simulation:

• changing simulation options dynamically (i.e. --scale, --time-to-teleport, ....)
• adding traffic
• changing vehicle or vehicle type parameters
• testing TraCI function calls

Understanding what you see#

Right of way#

At the end of every lane and at the outset of a junction there is a little colored bar which indicates right of way. When there are multiple target lanes from one lane, the bar is split in smaller parts each indication the rules for one connection. The colors a defined as follows:

• FOO Traffic light, green phase, vehicle has right of way
• FOO Traffic light, green phase, vehicle has to yield to some streams
• FOO Traffic light, red phase, vehicle has to wait
• FOO Traffic light, red/yellow phase, indicates upcoming green phase, vehicle has to wait
• FOO Traffic light, yellow phase, vehicle should stop if possible
• FOO Traffic light, off-blinking, vehicle has to yield
• FOO Traffic light, off-no-signal, vehicle has right of way
• FOO uncontrolled, vehicle has right of way
• FOO uncontrolled, vehicle has to yield to some streams
• FOO uncontrolled, right-before-left rules, all vehicles yield to the rightmost incoming lane
• FOO uncontrolled, stop-sign / controlled, right-turn arrow, vehicle has to stop and then yield
• FOO uncontrolled, allway-stop, all vehicles have to stop and then drive in the order of arrival
• FOO uncontrolled, zipper, vehicles have to perform zipper merging
• FOO dead-end, vehicle may not drive there
• FOO suspicious dead-end, there are outgoing edges but the vehicle may not continue anywhere

Road Access Permissions#

Road access permissions are an important tool for building multi-modal scenarios. To better understand the road network configuration there are various ways to support coloring according to permissions.

Default Coloring#

The default coloring scheme (uniform) aims to color roads in a realistic way and also show some basic access permissions. The road colors have the following meanings:

• FOO sidewalk (allow="pedestrian")
• FOO bike lane (allow="bicycle")
• FOO bus lane (allow="bus")
• FOO waterway (allow="ship")
• FOO closed lane (allow="authority")
• FOO forbidden edge (disallow="all" on all lanes)
• FOO green verge in netedit (disallow="all")
• FOO green verge invisible in sumo-gui (disallow="all")
• FOO rails on road
• FOO anything else that does not allow passenger
• FOO anything else

Color by permission code#

Each possible set of access combinations is represented by a unique numerical code. The code for each lane can be retrieved from the lane parameter dialog (permission code). The lane coloring scheme permission code allows assigning an individual color for each of code. This can be used for arbitrary coloring according to the users needs (the default coloring scheme can be regarded as a special case of this coloring type).

Show permissions for a specific vehicle class#

To investigate connectivity in the network, it is often useful to quickly highlight lanes that allow a specific vehicle class. This can be done from the main menu by selecting Edit->Select lanes which allow ...->the desired vehicle class.

This changes the current selection to the set of all lanes that allow the specified vehicle class and also changes the coloring scheme to color by selection. All lanes that allow the selected vehicle class will be shown in blue (by default).

Connectivity#

At each intersection all incoming lanes that allow driving across the intersection have one or more white arrows to show the allowed driving directions. However, these arrows only give partial information since every lane may have more connections than the number of arrows. For example, when a lane targets two lanes one the same edge beyond the intersection, only one arrow will be drawn even though two distinct connections exist.

• To see all connections, activate the junction visualization option Show lane to lane connections. The colors of the connection lines correspond to the Right of way-colors.
• Each connection at an intersection has a unique index starting at 0 and going clockwise around the intersection. These indices can be shown using the junction visualization option Show link junction index.
• Each connection that is controlled by a traffic light has a unique index with regard to that traffic light. By default each traffic light controls one intersection and these indices are identical to the link junction index mentioned above. In the case of joined traffic lights which control multiple intersections, the indices are different. Also, the indices may be freely customized by the user (e.g. to define signal groups). These indices are shown using the junction visualization option Show link tls index.

Check connected components#

You can show all network components that are reachable from a particular lane by right-clicking on a lane and then using the 'select reachable' menu option. A new menu opens where you have to select the vehicle class to check. After choosing a vehicle class, all reachable lanes will be added to the lane selection and the edge coloring mode will be set to 'color by selection'. Consequently, all reachable lanes will be colored blue and all unreachable lanes will be gray.

Color by reachability#

After using the 'select reachable' function, you can also set edge-coloring mode to 'color by reachability'. This will color each edge according to the travel time from the point of origin. The following coloring options are useful in this regard:

• Recalibrate Rainbow: Configure colors to the data range of encountered travel times
• 'hide below threshold' (0): color unreachable edges grey as their value is set to -1. (must be activated before using 'Recalibrate Rainbow')
• 'show edge color value': show the actual travel times for each edge
• disable 'constant text size' for 'show edge color value': avoid cluttering the display when zoomed out

Simulation mode/model: micro or meso? sublane?#

• Under a meso-simulation: No lane can be selected/shown. "segment" information will be displayed by right-clicking an edge or further choosing "Show Parameter" (see the example image below).
• Under a micro-simulation: Each lane ID can be displayed by mouse hovering, when the icon "View Tooltips" is toggled. Each lane can be selected.
• If specific models are used, e.g. sublane and IDM, the respective information can be seen by right-clicking a road user (vehicle, pedestrian,train...) and further choosing "Show Parameter".

Changing the appearance/visualisation of the simulation#

The View Settings menu allows to change and customize the simulations' appearance and visualization. To open the visualization settings use in the menu bar at the top of the view.

For customizing the simulation one can make changes e.g. to the background coloring, streets and vehicle appearance as well as the visualization of POIs. Furthermore one can save () and delete () settings to the registry or export () custom made settings files and load previews settings again . So one can use different favorite settings files for any simulation.

The current settings file is shown in a drop down menu in the top bar of the View Settings window where you can switch back to default settings.

Common Visualization Settings#

Separate settings exist for different simulation objects such as vehicle, lanes, persons and detectors. Some options exist for all (or most) of these objects:

• Size options
  • Exaggerate by: Draws objects bigger to make them more visible
  • Minimum Size: Do not draw objects below a minimum size
  • Draw with constant size when zoomed out: Automatically increase the drawing size when zooming out to keep the visual size constant.
• id options
  • Show id: Enable drawing of object IDs
  • constant text size: toggle whether the visual text size will stay constant when zooming
  • Size: Size of the drawn ID
  • Color: Color of drawn ID
  • Background: Background color of drawn ID
  • Show name: Show optional name (either using the 'name' attribute or 'name' <param>)
• Coloring options: Color by some attribute and change the color value/range
  • Show color value: show the numerical value that is used for coloring (text configuration options as for the id)

Vehicle Visualisation Settings#

Vehicle shape schemes#

Vehicle coloring schemes#

Toggles#

• Show blinkers / brake lights
• Show brake gap
• Show route index: When activating show route in the vehicle context menu, each highlighted edge is annotated with its index along the route (permitting to analyze looped routes)
• Show parking info: When activating show route in the vehicle context menu, the vehicle is annotated with the number of failed parking attempts and each parking area is annotated with the last target selection score
• Show minimum gap
• Show Bluetooth range
• Scale length with geometry (see length-geometry-mismatch)

Scaling#

Vehicle size is affected by the following features

• Exaggerate by : Sets a constant scaling factor
• Draw with constant size when zoomed out: Increases vehicle size (relative to road network) and thereby keeps them visible when zooming out It is also possible to scale the size of the vehicle according its attributes.
• Scale size: Selects scaling by a given attribute (i.e. speed). The user may configure a table of scaling factors corresponding to a list of numerical values (with automatic interpolation). This works similar to color interpolation.
• Scale length with geometry : Deactivating this option makes a difference in networks with mismatching edge length values (e.g. given length value greater than the one derived from geometry) - vehicles can be drawn longer / shorter than they actually extend physically along the lane.

Textual annotations#

The following textual annotations are supported:

• vehicle id: Renders the vehicle id and also 'line' attribute if defined for the vehicle
• vehicle color value: The numerical value that forms the basis for coloring (i.e. speed) is rendered
• vehicle scale value: The numerical value that forms the basis for scaling (i.e. acceleration) is rendered. It may be useful to activate scaling just for the textual value (and setting a scaling factors to 1).
• Vehicle text param: Renders any Generic Parameter set on the vehicle. This also supports any virtual parameters accessible via TraCI

Each text can be configured with regard to its size color and background color. By activating the option Only for selected, The textual annotation is limited to vehicles with the selected status.

Edge/Lane Visualisation Settings#

Table 2.1 Lane coloring schemes

Table 2.2 Lane scaling schemes

In addition to the lane / edge coloring one can display lane borders, link decals, rails, edge names, street names, internal edge names, and hide macro connectors. The edge names as well as the street and internal edge names will always be scaled to the chosen size, no matter which zoom step is chosen.

Loading Shapes and POIs#

Polygonal shapes and Points of Interests (POIs) can either be loaded in a .sumocfg configuration file or interactively through the Open Shapes option in the File-menu.

Shapes and POIs can be located based on their unique ID and their appearance can be customized as well.

Showing Background Images#

In addition to changing the appearance of simulated structures, one may also load additional background images ("decals") into sumo-gui. For this, open the visualization settings using and - if you are not yet here - choose the "Background" panel (see Figure below). You will see a table with the following columns: file, centerX, centerY, width, height, rotation, layer and relative.

The decals GUI.

Now, if you click into the first row of the "picture file" column, you should be able to enter the complete path of an image file. Confirming the path by pressing RETURN should force sumo-gui to load and display the file below the road network, as shown in the figure:

Example of a background image (decal).

Currently, sumo-gui may load .gif, .png, .jpeg and .bmp files. If built with gdal-support further formats such as .tif are also usable.

Now, you may position/stretch/rotate the image using the columns centerX, centerY, width, height, and rotation.

When setting the column relative to 1, position and size values will be taken as screen-relative pixel values instead of network-relative meter values.

After aligning your decals, you can save them using the "Save Decals" button located in the dialog. Accordingly, previously saved decals can be loaded by pressing the "Load Decals" button.

When defining decals in XML a single line which looks like this:

<decal file="background.gif" centerX="550.00" centerY="1530.00" width="64.00" height="64.00" rotation="0.00"/>

The following attributes are supported

Transparency#

All image files in the visualization support transparency. For vehicles, pois and polygons, this transparency can be set dynamically by changing the color via TraCI and setting the alpha-channel.

All objects that have their color set (via input files or visualisation settings) support (Red,Green,Blue,Alpha) color values.

3D-specific Settings#

The scene is illuminated by a directional light source ("the sun"). The light color originates from the grayscale range can be varied through the 3D-specific Visualization Settings. The sun brightness value ranges from 0 (=black) to 255 (=white) and represents the grayscale diffuse light. The ambient light value is half of the diffuse light.

The 3D scene background color can be set to any RGB color. The OSG standard background color is (51,51,102).

Additionally, the visibility of traffic light related items can be set (see automatically generated 3D environment).

Configuration Files#

sumo-gui uses the same configuration files as SUMO. The recognized options can be obtained by calling sumo --help or you save a configuration file with default settings by calling sumo --save-template <file> --save-commented.

The options in the GUI category are specific to sumo-gui

• --gui-settings-file (shortcut -g) allows to load a previously saved gui-settings file (see below)
• -S, --start: starts the simulation upon opening the gui (without the need to click the start button)
• -Q, --quit-on-end: closes the gui upon simulation end
• -d, --delay: sets an initial simulation delay to prevent the simulation from running to quickly
• --window-size WIDTH,HEIGHT: sets the initial window size (by default the previous size is restored)
• --window-pos X,Y: sets the initial window position (by default the previous position is restored)

A sumo configuration that loads gui settings is shown below:

example.sumocfg

    <configuration>
        <net-file value="yournetwork.net.xml"/>
        <gui-settings-file value="viewsettings.xml"/>
    </configuration>

You may either load example.sumocfg using the open simulation-dialog or by using the command-line sumo-gui -c example.sumocfg.

You may use a XML schema definition file for setting up a sumo-gui configuration: sumoConfiguration.xsd.****

GUI-settings Files#

All the settings configured in the View Settings dialog can be saved to a file and re-used for a new simulation. We refer to such files as gui-settings files. Such a file can also include information about breakpoints, screenshots, simulation delay and background images. The easiest way to obtain a gui-settings file is via the View Settings-Dialog . Simply modify the settings and save .

Note, that the gui-settings-file obtained this way only contain information about the viewport (zoom and offset), delay, breakpoints and decals if the corresponding check-boxes are activated before saving.

viewsettings.xml

    <viewsettings>
        <scheme name="...">
           ...
        </scheme>

        <viewport zoom="200" x="100" y="-100" angle="0.00"/>
        <delay value="42"/>
        <decal file="background.gif" centerX="550.00" centerY="1530.00" width="64.00" height="64.00" rotation="0.00"/>
        <breakpoint value="42"/>
        <breakpoint value="1337"/>
    </viewsettings>

Minimal settings file#

It possible to reference a predefined scheme by its name alone:

<viewsettings>
    <scheme name="real world"/>
</viewsettings>

The name may either be one of the "native" schemas ("standard", "real world", ...) or any schema stored in the registry by the user.

Breakpoints#

There are multiple ways to load pre-defined breakpoints. The breakpoint element can be included directly in a gui-settings file: <breakpoint value="1337"/>

Alternatively, a breakpoint-file definition can be specified in the gui-settings file:

<viewsettings>
    ...
    <breakpoints-file value="breakpoints.txt"/>
</viewsettings>

The breakpoints file should hold one time-value per line. A file, suitable for loading breakpoints can be obtained by setting breakpoints in the gui and using the menu-option for saving (Edit->Edit Breakpoints->save).

A further way to set breakpoints is by using the sumo option --breakpoints to load a comma-separated list of time values (shortcut -B). This circumvents the need for a gui-settings file.

Screenshots#

It is possible to take screenshots at predefined times by adding elements to the configuration:

<viewsettings>
    <snapshot file="myScreenshot.png" time="42"/>
</viewsettings>

Miscellaneous View Settings#

3D Scene lighting can be defined via the following (indices 0 - 9 are supported):

<light index="0" centerX="671.02" centerY="639.20" centerZ="200"/>

Multiple Views#

Using the ()-button, multiple viewing windows can be opened onto the same simulation. The visualization settings can be set independently for each view. The viewing windows can be managed using the Windows menu in the main menu bar.

When passing multiple files to the sumo-option --gui-settings-file, one viewing window is opened for each file at the start of the simulation.

3D Visualization#

When sumo-gui was compiled with OpenSceneGraph (OSG) support an additional ()-button is present to open a new 3D view. A pre-compiled Windows version for testing is available here. Optionally sumo-gui will open a 3D view already from the start by supplying the command line option --osg-view true.

3D Viewport#

The view of the 3D scene can be changed using two methods: The camera can be moved by mouse and keyboard or the view can be defined in the viewport dialog. The following table summarizes which mouse actions and keys can be used to control the view.

Open the viewport editor using the button. The camera position itself is listed in the left column whereas right "LookAt" coordinates define the target to look at. "LookAt" coordinates are normalized to length 1 by OSG automatically.

Interacting with network elements and vehicles works like in the 2D view: Context-dependent options are available by RMB click on the object to inspect.

Rendering statistics#

OSG draws some rendering statistics (e.g. frames per seconds) on top of the 3D view by pressing the I key. Pressing the key multiple times will unveil different statistics and finally hide them again.

Automatically generated 3D environment#

Only some of the regular network components have been ported to the 3D view (yet). Currently the following are displayed:

• edges (with sidewalks curbs)
• junctions
• pedestrian crossings
• traffic lights

Automatically generated traffic lights come in different variants and can be shown/hidden independently of each other through the 3D part of the GUI settings:

• bubbles above the stop line which change their color according to the connection they belong to
• detailed model with pole(s) and signals (either a cantilever beam or a signal bridge for large roads; single pedestrian signals are placed across the street)

Semi-automatic 3D traffic light#

Alternatively to automatically generated traffic lights, there is the option to place a single traffic light on a pole at a custom position and orientation in the network. The decals table interprets the following magic entry in the file column to a single traffic light: tl:<TL_ID>:<TLLINKINDEX>. The current signal state is updated accordingly to the tlLinkIndex <TLLINKINDEX> of the traffic light <TL_ID>.

Adding 3D objects#

Static models#

Loading individual 3D objects can be done through the decals table of the GUI settings. 3D object files in file formats supported by OSG (e.g. obj, 3ds) are loaded in the scene and positioned with the offset values from the decals table. For large scenes, it may be advantageous to build a single 3D object which contains all elements (e.g. buildings) used in sumo-gui.

Additionally, the same background images as in the 2D view can be loaded.

Vehicle models#

Some basic vehicle models are shipped with SUMO in the data/3D directory. Custom vehicle models can be specified in the osgFile attribute of the respective vehicle type (see vehicle types). If the custom model cannot be used, it is replaced by a cone shape pointing to the direction of travel.

Limitations#

• no pedestrian and cyclist models
• performance problems when simulating several vehicles
• reload leaves previous 3D scene in place

Visualizing edge-related data#

Several applications generate edge-related measures for one or more time-intervals.

• edgeData-output files
• edge-probability files generated by randomTrips.py with option --weights-output-prefix
• marouter netload-output
• Smoothed traveltimes from device.rerouting when running sumo with option --device.rerouting.output.
• countEdgeUsage.py
• edgeDataFromFlow.py transforms detector counts into edgeData
• routeSampler.py writes achieved counts and the deficit with regard to the input counts with option --mismatch-output
• netedit can be used to create and modify edgeData files

These files can be used with duarouter and with sumo to affect vehicle routing.

sumo-gui can also visualize the contained data to see how various traffic measures changed over time (without running a simulation at the same time).

Loading Data#

Edgedata files for visualization can be loaded by setting option --edgedata-files. When loaded this way, the simulation end time will be automatically adjusted to the end of the data range.

Edgedata files can also be loaded in sumo-gui from the menu using File->Open EdgeData.

All attributes will be loaded and can be selected in the street visualization settings

Using Live Data#

Instead of loading data from a file you can visualize the aggregated data that is currently being collected by the simulation. For this you need to color 'by live edgeData' and select the id of the configured edgeData (or laneData) element. This will always show the current aggregation interval (so the collected data is reset to 0 at the start of a new interval). By using the option --edgedata-output FILE or --lanedata-output FILE you can quickly configure a data collection that aggregates over the whole simulation.

Coloring by Data#

To make use of the loaded data, street coloring must be set to color by edgeData in the visualization settings dialog. The button Recalibrate Rainbow can be used to generate a coloring scheme that spans the loaded data range for the selected attribute.

When defining a color scheme, a dedicated color for missing data ('No Data') can always be configured.

Scaling by Data#

To make use of the loaded data for increasing the visual width of the roads, street scaling must be set to scale width by edgeData in the visualization settings dialog. After the scaling scheme has been selected, an attribute selection element becomes active which lists all the available edgeData attributes and must be used to pick the desired attribute for scaling.

Usage Examples#

Visualizing Shapes and Points of Interest#

see Using additional Polygons and POIs within the Simulation

Display Arbitrary Text in the Simulation View#

To display arbitrary text in the simulation view, the easiest way is to place a poi element with alpha channel 0 (invisible), set its type attribute to the text you wish to show and load gui settings that show poi types in the desired color and size.

<poi id="textPlacement0" type="my custom text" x="myX" y="myY" color="0,0,0,0"/>

To use another text size or color, you can use a poi parameter and pick that parameter next to the "show poi text param" checkbox:

<poi id="textPlacement2" x="myX2" y="myY2" color="0,0,0,0">
   <param key="anykey" value="my custom text in another size or color"/>
<poi>

The same trick can be repeated for Polygons.

You can also use traci.simulation.writeMessage to put custom messages into the bottom message window.

Display a custom Logo in the simulation View#

The background images (decals) support attribute screenRelative to place an object relative to the screen rather than the network. This allows to place a logo in a fixed position.

Showing routes and route-related information#

• To show the route(s) of a vehicle in the simulation, right-click and select Show Current Route or Show all Routes.
  • To show only the remaining portion of the current route, select Show Future Route.
  • The upcoming stops and their planned timing (or trigger condition) is automatically shown along the route. To show only the next round of a cyclic route (i.e. for public transport), disable the checkbox 'show looped route'
  • Direction reversal of rail vehicles will be shown along the route with the text 'reverse' and an index.
  • To show the index of each edge along the route, the vehicle visualization option 'Show route index' can be activated
• To show the route of a person, right click and select Show Current Route. To show the trajectory on a walkingarea, select Show Walkingarea Path.
• To highlight an arbitrary set of edges in the simulation create a selection file and color edges by selection
• To Visualize all routes in a route file use the tool Tools/Routes#route2poly.py or Tools/Routes#route2sel.py
• To Visualize the number of vehicles arriving or departing at any edge use the tool Tools/Routes\countEdgeUsage

Investigating internal edges and lanes#

Internal Edges define the movements across an intersection. By default they are hidden behind the shape of the junction to give a prettier visualization. Occasionally it is of interest to understand which internal lane corresponds to which movement as their IDs may be referenced in the output or in error messages. The following visualization settings are helpful:

• Junction settings:
  • disable draw junction shape (toggle with hotkey Ctrl + J)
  • show internal edge name
  • show internal junction name
  • show link junction index (to see the correspondence between IDs and link indices)
• Edge settings:
  • Exaggerate width by 0.1 (otherwise the shapes overlap which makes it hard to understand them)
  • Color by selection (coloring individual lanes makes it easier to understand geometry before and after internal junctions)

In the object locator menu, activate the "Show internal Structures" checkbox to have them appear in the edge and junction locator dialogs. They are found at the end of the object list since their ID starts with a ':'.

Investigation Stopping At Intersections#

1. Select Vehicle visualization settings "color by selection"
2. Right-Click on a vehicle and activate "Select Foes"

The foe vehicles which cause a vehicle to stop or slow down will be highlighted.