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    <p>Hello,</p>
    <p>I'm writing a script where i need to read rasters to get cells
      values. I'm using :</p>
    <pre>    <span class="n">a</span> <span class="o">=</span> <span class="n">garray</span><span class="o">.</span><span class="n">array</span><span class="p">()</span>
    <span class="n">a</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="nb">map</span><span class="p">)
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    <p>It seems that null cells are read as 0.0 How to make the
      difference with zero ?</p>
    <p>I'm using Grass 7.6.1 on Linux Debian9</p>
    <p>Thanks for your help</p>
    <p>Frank<br>
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    <span class="p"></span>
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