[Qgis-user] Creating simple choropleths in Q1.8

[sw1234]

I guess your data are treated as text in stead of numbers. You can check 
this on the Fields tab of the Layer Properties dialogue.

Sake

Op 31-8-2012 23:19, Roy Marsh schreef:
> IN QGIS 1.8 I want to create a simple choropleth to show 5 bands for a 
> range of numeric values
> I open Properties /Style for the vector layer and choose Legend Type 
> 'Continuous Colour'
> This should allow me to group values in a specified field into 
> meaningful bands
> Unfortunately, the 'classification field' box is greyed out in the 
> dialogue box, so no existing fields are selectable
> Strangely, if a new field is created, this becomes one of the 
> selectable fields in the 'Classification field' box
> Surely the system should not behave like this?
> Roy
>
>
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