Hi Leo,
AFAIK to have the classification in the legend you must use a tematic map
type, e.g. make a categorized thematic map on the class attribute and set
manually the color for the classes than you can create a layer style file
(qml) from the properties/style dialog pushing the save style button.
Later you can use the style file, but if the rgb values are changed it
doesn't work :(
An other solution can be to write a python script to collect the different
rgb values from he attribute table and generate dinamically the style file
or the thematic classes.
Zoltan
On Tue, 5 Aug 2014, Leo Kris Palao wrote:
Hi Zoltan,
I tried it and it was working, it defines well the symbology of my vector
layer. However, there is a little bit of problem. In my legend items it
only create one color (black). the color scheme of my legend doesn't seem
to follow the color combinations that I set in my attribute table. it would
be better if the color scheme of my attribute table will be reflected also
in my legend items.
This is how I encoded the color codes in my attribute table:
class color (R, G, B)
1 197, 197, 197
Thanks,
-Leo
On Mon, Aug 4, 2014 at 5:31 PM, Siki Zoltan <[email protected]> wrote:
Dear Leo,
you can do it in the properties dialog of the layer.
For example if you have a polygon layer, and the fill color is stored in
the attribute table of the layer than
1. open properties dialog of the layer
2. select style tab (left)
3. click on "Simple fill" under symbol layers (if you can't see Simple
fill, click on the triangle before Fill to extend the tree)
4. click on data defined properties... button
5. you can give an attribute or an expression of attributes to define the
fill color
I hope it helps you,
Zoltan
On Mon, 4 Aug 2014, Leo Kris Palao wrote:
Hi QGIS users,
Is there a way to automatically define the symbology of vector layer using
a column in the attribute table that defines the RGB?
I want to do this to have a uniform color coding for each land use types.
Some land use types might have more or less classes than for each
administrative boundary. I am thinking if I can encode the RGB values in
my
attribute table and later use it to define my symbology.
Thanks for any help and advice,
-Leo
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