Problems with slicemesh

[jadball]

Hello,

Is there a way to plot a slice of a mesh without changing the colour scheme?

I'd like to slice the mesh but have the elt colour stay based on the original orientation.
Without slicing, the correct colour scheme is used:

$ neper -V tess_output.msh  -dataeltcol ori -dataeltcolscheme "ipf(z)" -print tess_img

========================    N   e   p   e   r    =======================
Info   : A software package for polycrystal generation and meshing.
Info   : Version 4.4.1
Info   : Built with: gsl|muparser|opengjk|openmp|nlopt|libscotch (full)
Info   : Running on 1 threads.
Info   : <https://neper.info>
Info   : Copyright (C) 2003-2022, and GNU GPL'd, by Romain Quey.
Info   : No initialization file found (`.neperrc').
Info   : ---------------------------------------------------------------
Info   : MODULE  -V loaded with arguments:
Info   : [ini file] (none)
Info   : [com line] tess_output.msh -dataeltcol ori -dataeltcolscheme
         ipf(z) -print tess_img
Info   : ---------------------------------------------------------------
Info   : Loading mesh...
Info   :     [i] Parsing file `tess_output.msh'...
Info   :     [i] Parsed file `tess_output.msh'.
Info   : Reconstructing mesh...
Info   : Reading data (elt, col)...
Info   : Reading data (elt, colscheme)...
Info   : Printing image...
Info   :     [o] Writing file `tess_img.pov'...
Info   :   - Printing mesh...
Info   :     > Reducing data...
Info   :       . 3D...
Info   :       . 2D...
Info   :       . Number of 3D elt faces reduced by  99% (to 13638).
Info   :       . Number of 3D elt edges reduced by  50% (to 20457).
Info   :       . Number of 0D elts      reduced by 100% (to 0).
Info   :     [o] Wrote file `tess_img.pov'.
Info   :   - Generating png file (1200x900 pixels)...
Info   :     [o] Writing file `tess_img.png'...
Info   :     [o] Wrote file `tess_img.png'.
Info   : Printing scale...
Info   : Elapsed time: 9.230 secs.
========================================================================

After slicing, some of the grains have the wrong colour:

$ neper -V tess_output.msh  -dataeltcol ori -dataeltcolscheme "ipf(z)" -slicemesh "x=0.59" -print tess_img
 
========================    N   e   p   e   r    =======================
Info   : A software package for polycrystal generation and meshing.
Info   : Version 4.4.1
Info   : Built with: gsl|muparser|opengjk|openmp|nlopt|libscotch (full)
Info   : Running on 1 threads.
Info   : <https://neper.info>
Info   : Copyright (C) 2003-2022, and GNU GPL'd, by Romain Quey.
Info   : No initialization file found (`neperrc').
Info   : ---------------------------------------------------------------
Info   : MODULE  -V loaded with arguments:
Info   : [ini file] (none)
Info   : [com line] tess_output.msh -dataeltcol ori -dataeltcolscheme
         ipf(z) -slicemesh x=0.59 -print tess_img
Info   : ---------------------------------------------------------------
Info   : Loading mesh...
Info   :     [i] Parsing file `tess_output.msh'...
Info   :     [i] Parsed file `tess_output.msh'.
Info   : Reconstructing mesh...
Info   : Reading data (elt, col)...
Info   : Reading data (elt, colscheme)...
Info   : Printing image...
Info   :     [o] Writing file `tess_img.pov'...
Info   :   - Printing mesh slice...
Info   :     [o] Wrote file `tess_img.pov'.
Info   :   - Generating png file (1200x900 pixels)...
Info   :     [o] Writing file `tess_img.png'...
Info   :     [o] Wrote file `tess_img.png'.
Info   : Printing scale...
Info   : Elapsed time: 6.351 secs.
========================================================================

[rquey]

Thanks for the bug report. This is now fixed (version 4.4.2-27).

PS. You should probably use -reg 1 in -T to avoid the element concentrations in your mesh.

[jadball]

@rquey Many thanks for your help and advice! I will get the new version installed and give it a try.

[jadball]

@rquey This has fixed the issue, many thanks again!