"><span class="pre">%s:</span> <span class="pre">Must</span> <span class="pre">set</span> <span class="pre">&quot;ImageWidth&quot;</span> <span class="pre">before</span> <span class="pre">writing</span> <span class="pre">data</span></code>:</p>
<blockquote>
<div><p>The image’s width has not been set before the first write. See
<a class="reference internal" href="TIFFSetField.html#c.TIFFSetField" title="TIFFSetField"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFSetField()<