Scripting

[eta]

Hi all,

I was looking at the api documentation (http://openvsp.org/wiki/doku.php?id=api#vsp_cfd_surface_behavior_type_enums) trying to write a script for OpenVsp but it doesn't seem to help enough.

The script should do the following: read a .vsp3 file (ReadVSPFile( "test.vsp3" );), modify parameters and run a VSPAERO solver run and export a .polar file.

For now I have been able to read in the file and modify some parameters by hand by manually looking up the ID (e.g. UQDYHMGCNF for 'AirfoilExport').

As to my questions: how do I exactly implement this to be automated, and what is the exact syntax to run a .vspscript in cmd?

Also: many threads say "pass in command line" or "run from batch mode" but what is the syntax for that?

Any help would be greatly appreciated!

-Edouard

[Rob McDonald]

At the command line, you can run "vsp --help" and you will get the following:

          Vehicle Sketch Pad 3.16.1

-----------------------------------------------------------

Usage: vsp [inputfile.vsp3]               Run interactively

     : vsp -script <vspscriptfile>        Run script

-----------------------------------------------------------

VSP command line options listed below:

  -help              This message

  -des <desfile>     Set variables according to *.des file

  -xddm <xddmfile>   Set variables according to *.xddm file

-----------------------------------------------------------

So, to run a script, you type the following

vsp -script myscript.vspscript

There is also the 'vspscript' executable that you can run.  It is a little smaller, and if you are on a Unix cluster or supercomputer that does not have graphics libraries installed, you can still probably run this one.  It has all the graphics and user-interface stuff stripped away.  It can _only_ run in script mode

vspscript -script myscript.vspscript

You can certainly open your script with ReadVSPFile.  However, since that is such a common option, you can also just pass the file name to the command line.  This is handy if you want to use the same script with many different file names at different times.

vsp airplane.vsp3 -script myscript.vspscript

It will load airplane.vsp3 and then run the script and then terminate.

If you simply wan to change a few variables (as in a typical design or trade study workflow), then the easiest way is to use the -des file capability.  For that, you can do something like:

vsp baseline.vsp3 -des changes.des -script myscript.vspscript

Where now all the script has to do is manage whatever analysis chore you want performed.

Rob

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[edouard...@gmail.com]

thank you very much!

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