[Scilab-users] Scilab checkerboard plot (grayplot)

[Samuel Gougeon]

There was a mistake in the mapping (+zmax instead of +1).
And may be about data transposition. The following shows
0 in the bottom row, as the plot you posted:

function  myMTIplot(data)

// Rescaling data to a given range of indices
nc  =  32;  // number of colors
zmin  =  -1;
zmax  =  1;
data2  =  (data  -  zmin)/(zmax-zmin)*(nc-1)  +  1;  
data2  =  flipdim(data2',1);
// Plotting
clf
f  =  gcf();
f.color_map  =  jetcolormap(nc);
Matplot(data2)
a  =  gca();
colorbar(zmin,  zmax);

xlabel("Impacting Group",  "fontsize",4)
ylabel("Impacted Group",  "fontsize",  4)
title("Relative MTI",  "fontsize",  5);

[nrows,  ncols]  =  size(data);
a.sub_ticks(1)  =  0;
a.font_size  =  3;
a.font_style  =  8;
ticksText  =  tlist(["ticks",  "locations",  "labels"],  1:ncols,  ..
             ["Plants",  "Bacteria",  "Det. Feeders",  "Carnivores",  "Detritus"]);
a.x_ticks  =  ticksText;
a.y_ticks  =  ticksText;
endfunction

data  =  csvRead("matrix.csv");
myMTIplot(M) --> flipdim(data',1)ans =0.4778269 -0.3005833 -0.0842439 
0.0636698 -0.38217690.2895315 -0.1630711 0.5548875 -0.3547458 
0.37435990.2895315 -0.1630711 -0.4451125 -0.3547458 0.37435990.4665757 
-0.2942464 -0.1058069 0.0774553 0.60327540. 0. 0. 0. 0.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20170422/c041c9bd/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: aikplhkfgacflkca.png
Type: image/png
Size: 16544 bytes
Desc: not available
URL: <https://lists.scilab.org/pipermail/users/attachments/20170422/c041c9bd/attachment.png>