PathPlanner 2024 won't support generating *.json and *.csv files

[WinstonHChou]

PathPlanner 2024 won't support generating *.json and *.csv files.
Just curious, how would you do to tackle with this issue?

[jsimpso81]

I'd like to see PathPlanner continue to support exporting Trajectory CSV files (or JSON) files. If they don't then the roboRIO (or an external utility) has to take the PathPlanner path and convert it to a trajectory to use. Here are the options:

1. Use the trajectory building tool provided with the LabVIEW math library. This doesn't support separate holonomic orientation, but the swerve odometry sample shows a solution for this.
2. Similar to 1) use the WPILIB PathWeaver tool to create trajectory files.
3. Use code on the roboRIO to create the trajectory directly. This is what is done in the swerve drive odometry example.
4. Write a utility to run on a computer to create the CSV file. (If you write such a utility, I'd consider including it in the LabVIEW release if you make it public.)
5. Wait for me to finish porting the PathPlanner library to LabVIEW. This will read the path file and create a trajectory just like Java and C can do. (I'd suggest doing one of the other options first. I don't have a guess when this is going to be done. It is maybe 30 percent complete.)

[WinstonHChou]

i did some research on 2024 version. Past versions were using PPWayPoints to construct a PPTrajecory.
But the new version has a new class "PathPlannerPath", which includes a bunch of new functions and modules, such as rotationTargets, constraintZones, eventMarkers, etc. Therefore, I'm not sure generating a CSV with these settings would be a easy implementation.
So far, what I did test is to read a path file in 2024 version format in LabVIEW (using Read_JSON from your PPlib as template, adjusted a few settings).

And I think eventMarkers would be a headache to read from json path file due to a lot of nested structures of "commands".

[jsimpso81]

I’m working on a new port of the updated path planner.   I can programmatically create paths and trajectories.  I’m working on the json part now.If you have anything you want to donate to the effort let me know. JimOn Dec 7, 2023, at 9:31 AM, Winston ***@***.***> wrote: i did some research on 2024 version. Past versions were using PPWayPoints to construct a PPTrajecory. But the new version has a new class "PathPlannerPath", which includes a bunch of new functions and modules, such as rotationTargets, constraintZones, eventMarkers, etc. I'm not sure generating a CSV with these settings would be a easy implementation. So far, what I did test is to read the path file in 2024 version format in LabVIEW (using Read_JSON from your PPlib as template, adjusted a few settings). —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you commented.Message ID: ***@***.***>

[jsimpso81]

A new release has just been published that can read PATH files and create trajectories. There are also routines that can read CSV trajectory files (from the previous version of the pathplanner guii). These are also routines that can write CSV files, in case you dont want the robot to have to read the PATH file and create that trajectory on the roboRIO.