How to get Agent trajectory image?

[hasifast]

How can i get the image as shown in figure1(b)of paper (MINOS: Multimodal Indoor Simulator for Navigation in Complex Environments) of agent trajectory where i have navigated. I actually want to see the path the agent has followed. Image is shown here,

[msavva]

Please see https://github.com/minosworld/minos/blob/dev/FAQ.md#getting-shortest-path-to-goal-and-navigation-map-data for the relevant parameters. The gym demo.py also includes example code that saves the navigation map and visualized shortest path from agent position to goal at each step. You can try this by running python3 demo.py -s map --save_observations.

If by "path" you mean the traversed path, then that is not actually what the above visualization plots. You can create a path visualization using the minos/server/visualize_traces.js script as follows:

• Run using the --log_action_trace argument (e.g., python3 demo.py --log_action_trace)
• Inspect the output in logs/<timestamp>/action_trace.csv. This file is a recording of all agent steps
• Run the visualization script (e.g., ./visualize_traces.js --trace_file ../../gym/logs/<timestamp>/action_trace.csv)
• Inspect the visualization png files written to the working directory -- there will be one file per episode visualizing the agent path and the goal object (in green)

The visualize_traces.js script has additional parameters to control the output that you can see by running with the -h argument.