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Numpy array to C# array #564
Description
Environment
- Pythonnet version: 2.4.0
- Python version: 3.6 (anaconda)
- Operating System: Windows 7 (x86)
Details
I am using the code below to use some of the features of pylinac in C#. I would like to know how to convert the dynamic array in to a C# array. In the example below the array structure is 60 rows and 4000 columns.
{[[ 0. 0. 0. ..., 0. 0. 0.]
[ 0. 0. 0. ..., 0. 0. 0.]
[ 0. 0. 0. ..., 0. 0. 0.]
...,
[ 0. 0. 0. ..., 0. 0. 0.]
[ 0. 0. 0. ..., 0. 0. 0.]
[ 0. 0. 0. ..., 0. 0. 0.]]}
`PythonEngine.PythonHome = @"C:\Anaconda3";
using (Py.GIL())
{
try
{
dynamic pl = Py.Import("pylinac");
dynamic np = Py.Import("numpy");
dynamic tlog = pl.TrajectoryLog.from_demo();
tlog.fluence.gamma.calc_map();
dynamic array = tlog.fluence.actual.array.astype(np.float32, Py.kw("copy", false));
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}`
Also when debugging in VS 2017 the process slows down when importing Py.Import("pylinac"), any ideas, should this be in a separate post?
Activity
den-run-ai commentedon Nov 2, 2017
@bobred the slowdown during import is likely a performance issue with the debugger and nothing to do with pythonnet.
For converting numpy arrays, search this issue tracker. There are multiple methods, e.g. some listed here.:
#514
dmitriyse commentedon Nov 2, 2017
#528 this PR addresses this issue.
Debug is slow due to unoptimized pythonnet Implicit assembly loading technique.
den-run-ai commentedon Nov 2, 2017
We should probably supporting this conversion syntax from IronPython.
filmor commentedon Jun 14, 2022
There are some tests that do the conversion manually, apart from that, we are open to additional codecs that implement this.