Automatic Curves Export after simulation

Hi @Thomas_Bécue,

Yes, this can be accomplished through scripting or, in new versions of MotionView, the use of MotionSolve Jupyter Notebook (recommended).

The scripting method would require the solving and post-processing to be run by either a batch file, Python script, Compose script, etc.

If using batch, you can solve a MDL using the following syntax:

mdl_batch [input_filename] [output_filename] [solver_name] <options>

https://help.altair.com/hwdesktop/hwx/topics/motionview/generating_solver_input_file_solving_frm_mv_mdl_batch_r.htm?zoom_highlight=motionview+batch

For the post-processing, you can write TCL commands to open HyperGraph, plot either a PLT or ABF file, and then export the curves.

Using Altair Compose (how I commonly accomplish this task), you could use the CAE Reader Tool to generate the syntax for extracting the desired curves from a PLT or ABF file, and then add a few more lines for writing to CSV and running the model.

The alternative method, using Jupyter Notebook, can automate the creation, solving, post-processing, and reporting of models.

This topic was originally discussed here:

@Christopher_Fadanelli mentions:

You can directly create a MotionSolve Jupyter Notebook session from the Start Menu in Windows or by invoking the respective script in Linux. After invoking the first Jupyter session the tutorials are being placed under:

• Windows: C:\Users\{USER_NAME}\Documents\Altair\MotionSolveNotebooks\demos
• Linux: /home/{USER_NAME}/Documents/MotionSolveNotebooks/demos

The tutorials can also be found in your Altair installation folder:

• {ALTAIR_INSTALL_PATH}\hwsolvers\demos\motionsolve\jupyter

More details can be found in this second Community article:

Hope this helps!

Adam Reid

Hi,
Thanks for you answer.
Is Jupyter API can work with Motion View 2022.1 ?

Thanks
Thomas

Hi @Thomas_Bécue,

Unfortunately no, the Jupyter API for MotionView was not introduced until the 2024.1 release.

https://2024.help.altair.com/2024.1/hwdesktop/hwx/topics/release_notes/rn_2024_1_motionview_r.htm

Is it possible for you to update to the 2025.0 release? There are significant improvements that have been implemented since the 2022.1 version.

Hope this helps!

Adam Reid

Hi !
I found a alternative with a OML script on Compose 2022.1 to generate CSV files from my ABF files

I placed all my .abf files in a folder, from which I want to extract the results in .csv format.

What the OML script does :

1. I specified the ABF folder path in the script, then I specified the folder path where I want to save my .csv file.
2. I ran a loop that scan all the files in the "ABF" folder (the folder must only contain .abf files!) to generate a list of .abf files.
3. Next, another loop takes the path to the [i] .abf file and loads it with the READMULVECTORS() function. You can specify the result to extract as an argument (see the OML documentation for this function to use it).
4. I used this function a second time to load the TIME vector.
5. I created the CSV file.

Regards,
Thomas