Accessing modulus in the same folder in GHpython

I got an error when I was trying to import a py modulus and a dll file in the same folder. I grab this "matrix" modulus from internet, which utilizes "xalglib" and "alglibnet2.dll". I place them all under the same folder: "C:\Program Files\Rhinoceros 5 (64-bit)\Plug-ins\IronPython\Lib". The ghpython component can access the module when calling "import matrix" but it cannot access the subsequent "xalglib" module; I've also tried "import xalglib", but now cannot access "alglibnet2.dll". Is it possible to grant permission to access the files in the same folder?

Attachments:

xalglib.py, 761 KB
matrix.py, 9 KB
alglibnet2.dll, 1.3 MB

Replies to This Discussion

Permalink Reply by Giulio Piacentino on October 31, 2015 at 10:15am

Hi David

I asked Will if he knew what was going on, as he wrote the matrix code.
It will for sure require him less time than it would to me.

Let's see what he can say.

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by David Chen on November 2, 2015 at 11:05am

Thanks Giulio for quoting the source. I will wait for Will's reply then.

Permalink Reply by Will Pearson on November 3, 2015 at 7:15am

David,

Thanks for your patience. First there are a couple of things you should be aware of before using this very limited matrix module:

1. Please see Giulio's recent post on using Math.NET Numerics from GhPython for a fully featured matrix library.

2. ALGLIB is only required for the `Matrix.eig()` function.

I wrote this module specifically to be called by meshCurvatureTensors.py (which itself is purely a proof-of-concept port of an algorithm I'd previously implemented in Java). To test that everything's still working as expected I dropped matrix.py and meshCurvatureTensors.py into the same folder as xalglib.py and alglibnet2.dll and called meshCurvatureTensors.py via _RunPythonScript (Mac and Windows).

As for GhPython, I just tried adding the directory containing matrix.py, xalglib.py, etc., to the module search path (_EditPythonScript > Tools > Options) and it seemed to work.

Permalink Reply by David Chen on November 3, 2015 at 11:32am

Thanks Will. I still have problems with that even though I put all three files under the same folder and I'm sure they are unblocked. It seems that the ghPython do not have permission to access the folder.

Permalink Reply by Will Pearson on November 3, 2015 at 4:26pm

Hmm, I was just able to reproduce the error you're seeing by putting matrix.py, xalglib.py and alglibnet2.dll in C:\Program Files\Rhinoceros 5 (64-bit)\Plug-ins\IronPython\Lib\. After further investigation it seems I can only load the xalglib module in python after first loading it in Rhino (i.e. by running the meshCurvatureTensors.py script). Please try this workaround (or try using Math.NET Numerics) while we look into the problem.

Permalink Reply by David Chen on November 3, 2015 at 5:00pm

Thanks. I will try loading the xalglib module in Rhino python script first. Also I will give Math.Net Numerics a try.

Permalink Reply by Giulio Piacentino on November 4, 2015 at 3:13am

That will likely not suffice. It seems it is just a problem with the relative location of the file. See below. Thanks.

Permalink Reply by Florian ROCHEREAU on November 3, 2015 at 7:14pm