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<div class="moz-cite-prefix">Hello Ekin,<br>
<br>
Le 21/04/2017 à 11:19, Ekin Akoglu a écrit :<br>
</div>
<blockquote
cite="mid:ff70db96-cd4f-ee9a-24ff-857a57a7fe5d@gmail.com"
type="cite">Dear all, <br>
<br>
I am producing a checkerboard plot with Scilab and the plot seems
erroneously colored. The matrix I plot is attached as well as the
scripts to plot and the plot produced by Scilab. <br>
<br>
The problem is that the data at matrix(1,3) and matrix(1,4) are
equal, however, on the plot produced by Scilab it is represented
by different colors (plants vs det. feeders and plants vs
carnivores on the plot). Let me remind you that the plot is
transposed form of the matrix. <br>
<br>
I would appreciate any help on the matter. <br>
</blockquote>
<br>
As Antoine wrote in his first answer, Matplot() must be used instead
of grayplot().<br>
The following simplified script can be used, yielding the following
plot.<br>
<br>
<pre style="font-family:Monospaced;font-style:normal;font-size:12.0;"><span style="color:rgb(176,24,19);">function</span> <span style="color:rgb(0,0,0);text-decoration:underline;">myMTIplot</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(131,67,16);font-weight:bold;">data</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(100,174,100);font-style:italic;">// Rescaling data to a given range of indices</span>
<span style="color:rgb(0,0,0);">nc</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">32</span><span style="color:rgb(0,0,0);">;</span> <span style="color:rgb(100,174,100);font-style:italic;">// number of colors</span>
<span style="color:rgb(0,0,0);">zmin</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(92,92,92);">-</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">zmax</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">1</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">data2</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(74,85,219);">(</span><span style="color:rgb(131,67,16);font-weight:bold;">data</span> <span style="color:rgb(92,92,92);">-</span> <span style="color:rgb(0,0,0);">zmin</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(92,92,92);">/</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">zmax</span><span style="color:rgb(92,92,92);">-</span><span style="color:rgb(0,0,0);">zmin</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(92,92,92);">*</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">nc</span><span style="color:rgb(92,92,92);">-</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(74,85,219);">)</span> <span style="color:rgb(92,92,92);">+</span> <span style="color:rgb(0,0,0);">zmax</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(100,174,100);font-style:italic;">// Plotting</span>
<span style="color:rgb(0,0,0);">clf</span>
<span style="color:rgb(0,0,0);">f</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(0,0,0);">gcf</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">f</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">color_map</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(0,0,0);">jetcolormap</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">nc</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(50,185,185);">Matplot</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">data2</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(0,0,0);">a</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(0,0,0);">gca</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">colorbar</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">zmin</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(0,0,0);">zmax</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">a</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">sub_ticks</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(74,85,219);">)</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">0</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">xlabel</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Impacting Group</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">fontsize</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">4</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(0,0,0);">ylabel</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Impacted Group</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">fontsize</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">4</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(0,0,0);">title</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Relative MTI</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">fontsize</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">5</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(74,85,219);">[</span><span style="color:rgb(0,0,0);">nrows</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(0,0,0);">ncols</span><span style="color:rgb(74,85,219);">]</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(50,185,185);">size</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(131,67,16);font-weight:bold;">data</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">a</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">font_size</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">3</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">a</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">font_style</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">8</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">a</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">x_ticks</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(50,185,185);">tlist</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(74,85,219);">[</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">ticks</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">locations</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">labels</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(74,85,219);">]</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">1</span><span style="color:rgb(255,170,0);">:</span><span style="color:rgb(0,0,0);">ncols</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(255,170,0);">..</span>
<span style="color:rgb(74,85,219);">[</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Plants</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Bacteria</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Det. Feeders</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Carnivores</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Detritus</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(74,85,219);">]</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">a</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">y_ticks</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(50,185,185);">tlist</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(74,85,219);">[</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">ticks</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">locations</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">labels</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(74,85,219);">]</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">1</span><span style="color:rgb(255,170,0);">:</span><span style="color:rgb(0,0,0);">nrows</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(255,170,0);">..</span>
<span style="color:rgb(74,85,219);">[</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Plants</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Bacteria</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Det. Feeders</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Carnivores</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span> <span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">Detritus</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(74,85,219);">]</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(100,174,100);font-style:italic;">//</span>
<span style="color:rgb(176,24,19);">endfunction</span>
<span style="color:rgb(0,0,0);">M</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(50,185,185);">csvRead</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">matrix.csv</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);text-decoration:underline;">myMTIplot</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">M</span><span style="color:rgb(74,85,219);">)</span></pre>
<img src="cid:part1.E9E999AB.883ED8D7@free.fr" alt="" height="334"
width="526"><br>
<br>
It correctly maps the given data matrix:<br>
<br>
<tt>--> data</tt><tt><br>
</tt><tt> data = </tt><tt><br>
</tt><tt><br>
</tt><tt> 0. 0.4665757 0.2895315 0.2895315 0.4778269</tt><tt><br>
</tt><tt> 0. -0.2942464 -0.1630711 -0.1630711 -0.3005833</tt><tt><br>
</tt><tt> 0. -0.1058069 -0.4451125 0.5548875 -0.0842439</tt><tt><br>
</tt><tt> 0. 0.0774553 -0.3547458 -0.3547458 0.0636698</tt><tt><br>
</tt><tt> 0. 0.6032754 0.3743599 0.3743599 -0.3821769</tt><tt><br>
</tt><br>
HTH<br>
Samuel<br>
<br>
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