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Formatting label texts with python

Question asked by hmaezawa on Aug 29, 2013
Latest reply on Oct 23, 2013 by s76moore
  • Comment • 3
Hello everyone.
I am new to python programming and just managed to write a code to label features with particular field.

Here is the code that I am using for labeling. After specifying map and layer..

   if layer.supports("LABELCLASSES"):
     for lblclass in layer.labelClasses:
         lblclass.showClassLabels = True
         lblclass.expression = " [type]

*I'm creating labels based on [type] field.

Next step is, set the format for the labels.

I am assuming I want to do something on lblclass.expression line..

like surrounding [fieldname] with text-formatting tags.

So I tried this code, lblclass.expression = "<BOL>[type]</BOL>"

and refreshed, but the labels disappeared, and they reappear when I just type lblclass.expression = "[type]"

It does not show any error message, but it just does not work. Same thing in <ITA><\ITA> code.

Does anybody have any idea how to solve this problem?

Any help will be greatly appreciated.

Thanks in advance!
thavelka
thavelka Aug 29, 2013 12:04 PM
Correct Answer
I believe you have to quote the tags and the interpreter doesn't understand two double quotes.  Try this code.


lblclass.expression = '"%s" & [type] & "%s"' % ("<BOL>", "</BOL>")
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