How can i concatenate two fields using pyculator plugin? There is any document with all pyculator functions that i can use in "field expression"?
If you have three fields: field1, field2, field3 and you want to concatenate the values from the first 2 into the third you would select field3 in the dropbox at the top of the plugin's window then double click the first field, press +, then double click the second field. The field expression box should look like this:
value = <field1> + <field2>
Then click Run and you're done.
Edit: If the field's aren't strings you'll need to convert them using python's str() function. If field1 is an integer field the example would be:
value = str(<field1>) + <field2>