qgisstylesymbology
I am creating a polygon feature layer with soil classes in QGIS.
I need to share this layer with some colleagues and I need the layer to maintain the color ramp I have created.
Is there any specific format where the color ramp is saved together with the layer?
Since I don´t know how to do that, I was thinking on saving the color ramp that I created as a style.
How can I export this style?
This is still an open bug in QGIS for CSV-layers http://hub.qgis.org/issues/8285
You could use PyQGIS for that (not sure is the best solution for it, though).
Assuming your layer has a color field (type: string), select (or activate) the layer in the QGIS ToC, open the QGIS Python console, and copy this code snippet:
layer = iface.activeLayer()
attr = layer.renderer().classAttribute()
attrColor = 'color' # Name of the field to store colors
fieldIndex = layer.dataProvider().fieldNameIndex(attrColor)
attrFeatMap = {}
for cat in layer.renderer().categories():
expr = "\"" + attr + "\"='" + unicode(cat.value()) + "'"
for f in layer.getFeatures(expr):
attrMap = {fieldIndex : cat.symbol().color().name()}
attrFeatMap[f.id()] = attrMap
layer.dataProvider().changeAttributeValues( attrFeatMap )
After running it, you'll obtain this:
Let me know if you face any problem.
Best Answer
After setting the symbology (colours / appearance) of your vector layer, you can save the symbology together with the shapefile. If the layer style file stays together with the other necessary parts of the shapefile (shp, shx and dbf) then it will automatically be rendered in the same way when it is next loaded into QGIS, even on another computer.
shpexample.shp.shpexample)