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## Re: question about contourf command

**From**: |
Pantxo |

**Subject**: |
Re: question about contourf command |

**Date**: |
Mon, 17 Sep 2018 09:07:46 -0500 (CDT) |

Tso-Min Chou wrote
>* Hi,*
>* I did the 2D filled contour plot with both Octave and Matlab with same*
>* script file; but the filled contour plots are very different. I also*
>* checked the data file and they are the same.*
>* *
>* The following plot is from Octave*
>* [image: image.png]*
>* *
>* This one is from Matlab*
>* [image: image.png]*
>* *
>* And here is my script file run in both Octave and Matlab.*
>* data = importdata('error_demo_2.txt') ; % read file*
>* x = data(:,1);*
>* y = data(:,2);*
>* z = data(:,3);*
>* % Grid*
>* %x0 = min(x) ; x1 = max(x) ;*
>* %y0 = min(y) ; y1 = max(y) ;*
>* %N = 10 ;*
>* %x2 = linspace(x0,x1,N) ;*
>* %y2 = linspace(y0,y1,N) ;*
>* %[X,Y] = meshgrid(x2,y2) ;*
>* [X,Y] = meshgrid(sort(x),sort(y));*
>* Z = griddata(x,y,z,X,Y,'linear');*
>* figure (1)*
>* contourf(X,Y,Z);*
>* colormap ('jet')*
>* colorbar*
>* figure (2)*
>* meshc(X,Y,Z)*
>* colormap ('jet')*
>* colorbar*
>* figure (3)*
>* contour(X,Y,Z);*
>* %meshc(X,Y,Z)*
>* colormap ('jet')*
>* colorbar*
>* xlabel ('Vds')*
>* ylabel ('Ids(mA/mm)')*
>* title ('S11 VAEerr')*
>* *
>* Anyone can tell me what is the reason for the difference and how to solve*
>* it?*
>* *
>* Thanks,*
>* *
>* TM*
>* *
>* *
>* *
>* *
>* image.png (41K)*
>* <http://octave.1599824.n4.nabble.com/attachment/4689419/0/image.png>*
>* image.png (25K)*
>* <http://octave.1599824.n4.nabble.com/attachment/4689419/1/image.png>*
Hi,
You did not attache the input file so that it is impossible for us to
reproduce and eventually diagnose this origin of the issue.
Could attach 'error_demo_2.txt'?
Pantxo
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