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<p class="MsoNormal">Hi Devs,</p>
<p class="MsoNormal">I’m contributing to the FUSION/LDV plugin and I have a couple of newbie questions related to the I/O parameters in Python.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1. SELECT MULTIPLE INPUTS</p>
<p class="MsoNormal">I’m not a Pythonist (I can read it and only make copy-paste-wise modifications). Unfortunately, there's one thing I don't understand of the logic related to the input of multiple files: there should be the way to create a
<em><span style="font-family:"Calibri",sans-serif">.txt</span></em> file with a list in case more than one is selected...but I haven't been able to make it work. You can find an example in
<em><span style="font-family:"Calibri",sans-serif">xyz2dtm</span></em> :</p>
<pre><code><o:p> </o:p></code></pre>
<pre><code>self.addParameter(QgsProcessingParameterMultipleLayers(self.INPUT,<o:p></o:p></code></pre>
<pre><code> self.tr('XYZ files'),<o:p></o:p></code></pre>
<pre><code> QgsProcessing.TypeFile))<o:p></o:p></code></pre>
<p>and then calling:</p>
<pre><code>fileList = fusionUtils.layersToFile('xyzDataFiles.txt', self, parameters, self.INPUT, context)<o:p></o:p></code></pre>
<pre><code><o:p> </o:p></code></pre>
<pre><code>arguments.append(fileList)<o:p></o:p></code></pre>
<p><o:p> </o:p></p>
<p>When trying this with other files (.las, .laz), the txt file is created but it remains empty. This could be quite a big thing for users instead of working on mega files or file-by-file, but I have no idea ho to deal with it.</p>
<p><o:p> </o:p></p>
<p class="MsoNormal">2. GENERAL OUTPUT NAME WITHOUT EXTENSION<o:p></o:p></p>
<p class="MsoNormal">There are some tools (e.g. TreeSeg) that require just a general “file name” that will be applied to many different outputs.<br>
If I set just a simple name (e.g. "test_output") it doesn’t run the algo and returns an error such as “invalid name”.<o:p></o:p></p>
<p class="MsoNormal">In order to “fix” this, the user has to enter any kind of extension (i.e. "test_output.csv" and FUSION will strip it out using the basename for all the exports it provides.<br>
<br>
<br>
Any suggestion or best practice about dealing with such cases?<br>
<br>
Thanks in advance as usual,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Nic<o:p></o:p></p>
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