[Qgis-user] Style - graduated render

[Alex Mandel]

On 11/21/2011 01:17 PM, David wrote:
> Hi everyone
> Thanks to Juan and Ramon for suggestions about Adding Data to the Attribute Table.
>
> It turns out that my mistake was not having the 'layers' panel open when doing the 'join' process.   So when I used this panel, it worked!   Well, almost ....
>
> Now when I open the Style box and select Graduated Render, the drop-down menu has only the columns from the original attribute table.   The columns I have added do not appear in the list.    But if I select Categorised render, all the new columns are there.
>
> Anyone got any ideas?
> David Asquith, UK
>

The joined columns may be text only and not numeric (possibly a bug). A 
work around is to add a new calculated column with the data you want, 
that way you can specify it's type as numeric.

Enjoy,
Alex