How to disable a parameter in Python script tool window?

MarAlcaraz

Hi,

I'd like to offer to final users of a python script tool the option to work with a constant value (as double) or a raster dataset.

I've thought about defining 2 parameters ( double and raster dataset) but I dont know how to disable the parameter not selected by the user.

Is that possible? Is there other solutions?

Thanks in advance

RussellBrennan

Mar,

Take a look at this topic, it describes how to perform the validation you are looking for.

Customizing Script tool behavior‌

The first example on this page shows you what you need to do in the updateParameters method:

<SPAN class="k" style="color: #0000ff;">def</SPAN> <SPAN class="nf">updateParameters</SPAN><SPAN class="p">(</SPAN><SPAN class="bp">self</SPAN><SPAN class="p">):</SPAN>

&nbsp; <SPAN class="c" style="color: #008000;"># If the option to use a weights file is selected (the user chose</SPAN>
&nbsp; <SPAN class="c" style="color: #008000;"># "Get Spatial Weights From File"), enable the parameter for specifying </SPAN>
&nbsp; <SPAN class="c" style="color: #008000;"># the file, otherwise disable it</SPAN>
&nbsp; <SPAN class="c" style="color: #008000;">#</SPAN>
&nbsp; <SPAN class="k" style="color: #0000ff;">if</SPAN> <SPAN class="bp">self</SPAN><SPAN class="o">.</SPAN><SPAN class="n">params</SPAN><SPAN class="p">[</SPAN><SPAN class="mi" style="color: #666666;">3</SPAN><SPAN class="p">]</SPAN><SPAN class="o">.</SPAN><SPAN class="n">value</SPAN> <SPAN class="o">==</SPAN> <SPAN class="s" style="color: #a31515;">"Get Spatial Weights From File"</SPAN><SPAN class="p">:</SPAN>
&nbsp;&nbsp; <SPAN class="bp">self</SPAN><SPAN class="o">.</SPAN><SPAN class="n">params</SPAN><SPAN class="p">[</SPAN><SPAN class="mi" style="color: #666666;">8</SPAN><SPAN class="p">]</SPAN><SPAN class="o">.</SPAN><SPAN class="n">enabled</SPAN> <SPAN class="o">=</SPAN> <SPAN class="mi" style="color: #666666;">1</SPAN>
&nbsp; <SPAN class="k" style="color: #0000ff;">else</SPAN><SPAN class="p">:</SPAN>
&nbsp;&nbsp; <SPAN class="bp">self</SPAN><SPAN class="o">.</SPAN><SPAN class="n">params</SPAN><SPAN class="p">[</SPAN><SPAN class="mi" style="color: #666666;">8</SPAN><SPAN class="p">]</SPAN><SPAN class="o">.</SPAN><SPAN class="n">enabled</SPAN> <SPAN class="o">=</SPAN> <SPAN class="mi" style="color: #666666;">0</SPAN>

You will want to change this slightly for your workflow.