[Qgis-user] multiple labels for polygon bug

[Alexandre Neto]

I'm sorry Michael,

But what you describe does not sound like a bug, but instead a
misunderstanding about the tools.

What you describe sound like you have used the filed calculator and updated
some field with it.

Using Expressions on labels does not mess with the columns values at all.

Take a look into the example given in the QGIS manual (search for Define
labels based on expressions) it does what you need:


*http://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/vector_properties.html#labels-menu
<http://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/vector_properties.html#labels-menu>*

Best regards,

Alexandre Neto

On Wed, Jan 28, 2015 at 8:13 PM, Michael.Dodd <michael.dodd at open.ac.uk>
wrote:

>  Further to previous message asking if it is possible to label a polygon
> with more than one column from the attribute table. I tried to produce an
> additional single column with the full label by concatenating the other two
> columns using:
>
> concat('plot',id,'  ',area,'sq m')
>
>
>  this works and shows the correct plot and area in the preview box.
> Unfortunately there appears to be a bug that prevents this showing on the
> map and, much worse, then goes on to destroy the data for the id column
> itself.
>
> using qgis 2.6.1 on win8.1
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