I want to give multiple colors to different features within a shapefile based on attribute values , is this possible in QGIS ?
If yes what is the procedure ?
Is there a way to provide color by means of hexadecimal codes ?
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It only takes a minute to sign up.Sign up to join this community
You can change the styles of the shape file in the layer properties. Double click the layer and select style.
Select Categorized style and choose a field you want to visualize. Remember to classify your values before leaving the dialog.
if I understood you right this great tutorial should answer your question: http://woostuff.wordpress.com/2011/06/06/one-of-my-favorite-features-of-qgis/
p.s. from the same author there is also a follow-up: http://woostuff.wordpress.com/2012/01/25/improvements-to-the-qgis-rule-based-rendering/
Alternatively to categorized styling, if you want to play a bit with colour you can try to code it by yourself:
CASE WHEN Field = 'Value1' THEN color_rgb(0, 176, 80) WHEN Field = 'Value2' THEN color_rgb(255, 255, 0) WHEN Field = 'Value3' THEN color_rgb(255, 192, 0) WHEN Field = 'Value4' THEN color_rgb(255, 0, 0) WHEN Field = 'Value5' THEN color_rgb(192, 0, 0) WHEN Field = 'Value6' THEN color_rgb(255, 0, 255) ... ELSE color_rgb(0, 0, 0) END
You can also apply rand function inside color_rgb