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Grid transformations with pcolor() #265

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xarico10 opened this issue Aug 2, 2021 · 1 comment
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Grid transformations with pcolor() #265

xarico10 opened this issue Aug 2, 2021 · 1 comment
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@gilbertogalvis

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@xarico10
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xarico10 commented Aug 2, 2021

When using pcolor() and trying to use defined non-regular grids, an empty figure is printed.

[X,Y] = meshgrid(-3:6/17:3);
XX = 2*X.*Y;
YY = X.^2 - Y.^2;
colorscale = [1:18; 18:-1:1];
C = repmat(colorscale,9,1);
pcolor(XX,YY,C);

fig2plotly(gcf, 'offline', false);

Expected and generated (https://chart-studio.plotly.com/~xarico10/797/#/) plots:
Captura de Pantalla 2021-08-02 a la(s) 11 34 15 a  m
Captura de Pantalla 2021-08-02 a la(s) 11 34 25 a  m

Examples on using pcolor() can be found on:
https://www.mathworks.com/help/matlab/ref/pcolor.html#responsive_offcanvas
@xarico10 xarico10 mentioned this issue Aug 2, 2021
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@gilbertogalvis gilbertogalvis self-assigned this Aug 3, 2021
gilbertogalvis pushed a commit that referenced this issue Aug 14, 2021
@galvisgilberto
fix issue #265
9dcd668
@gilbertogalvis gilbertogalvis mentioned this issue Aug 14, 2021
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@gilbertogalvis
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PR #340 fix this issue

To test it please use the code

[X,Y] = meshgrid(-3:6/17:3);
XX = 2*X.*Y;
YY = X.^2 - Y.^2;
colorscale = [1:18; 18:-1:1];
C = repmat(colorscale,9,1);
pcolor(XX,YY,C);

fig2plotly(gcf, 'offline', 1, 'TreatAs', 'pcolor');

As you can see it is necessary to set 'TreatAs' Plotly Option to 'pcolor'

results looks as follow

Screen Shot 2021-08-13 at 8 44 38 PM

Screen Shot 2021-08-13 at 8 45 36 PM

This was referenced Aug 14, 2021
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@gilbertogalvis @xarico10