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There was a mistake in the mapping (+zmax instead of +1).<br>
And may be about data transposition. The following shows<br>
0 in the bottom row, as the plot you posted:<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(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(0,0,0);">flipdim</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">data2</span><span style="color:rgb(92,92,92);">'</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">1</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;">// 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);">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);">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);">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);">ticksText</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);">x_ticks</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(0,0,0);">ticksText</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(0,0,0);">ticksText</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(176,24,19);">endfunction</span>
<span style="color:rgb(0,0,0);">data</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);">)
<img src="cid:part1.9C6BC6AD.E452118F@free.fr" alt="" height="343" width="522">
</span><tt>--> flipdim(data',1)</tt><tt>
</tt><tt> ans =</tt><tt>
</tt><tt>
</tt><tt> 0.4778269 -0.3005833 -0.0842439 0.0636698 -0.3821769</tt><tt>
</tt><tt> 0.2895315 -0.1630711 0.5548875 -0.3547458 0.3743599</tt><tt>
</tt><tt> 0.2895315 -0.1630711 -0.4451125 -0.3547458 0.3743599</tt><tt>
</tt><tt> 0.4665757 -0.2942464 -0.1058069 0.0774553 0.6032754</tt><tt>
</tt><tt> 0. 0. 0. 0. 0. </tt><tt>
</tt><tt>
</tt></pre><tt>
</tt>
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