I would like to know how to randomly select certain values from the attribute table.
A good discussion along with several good code examples can be found in previous threads, including https://community.esri.com/thread/121745 .
Thank you so much. This seems to work for me.
Ahhh, then generate your random integers, and use those in a search cursor to extract the values you need
The random module is a Python module.... Do you need to select random attributes from a single field? All fields? Some fields?
Please expand on your question. Give an example.
Add a field to your table
Do a field calculation as described here
or you can substitute random.randint in place of random.random if you want integers.
a <SPAN class="operator token">=</SPAN> random<SPAN class="punctuation token">.</SPAN>randint<SPAN class="punctuation token">(</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">100</SPAN><SPAN class="punctuation token">)</SPAN> a <SPAN class="number token">96</SPAN><SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
or even draw from a uniform distribution
u <SPAN class="operator token">=</SPAN> int<SPAN class="punctuation token">(</SPAN>random<SPAN class="punctuation token">.</SPAN>uniform<SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">100</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> u <SPAN class="number token">54</SPAN><SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
or other types of distributions depending on your needs
I need to use it from python and not from ArcMap. Also, I just need to select the attributes and not assign random numbers to it.
You can use the random module. Do you need random values in an attribute table? Or random rows?
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