Enhance Classify feature in vector's Gradient Symbol and Continuous Color symbology

[cgsbob]

Quite often I am comparing several vector files by using either Gradient or Continuous Color symbology based on a common attribute (for instance water depth). When I click on Classify, the class bounds and the associated colors are differ from each vector file.

As a workaround, I can (in the case of Gradient Symbol) set the number of classes, click on the Classify button, and then edit each class, but it gets rather tedious when you have many classes.

A possible solution to this problem is to allow the user to specify a new Mode that would allow the user to specify a beginning value (default to min), end value (default to max), and number of classes along with the beginning and end color. Continuous Color symbology could do the same.

[steko]

I find the OpenJUMP colour theming very good at this task. I'd love having the same functionality in QGIS, because it's both flexible and visually appealing. There are a number of preset scales for colour theming by value range. In QGIS, to do the same thing I have to load two times the same layer, create a single-color view of it, give a continuous scale from black to white to the second and then play with transparency. And the result isn't obviously very good.

See  http://openjump.org/wiki/show/Change+Style here for a screenshot of the OpenJUMP interface (not exactly of range theming though).

[lutra]

with new symbology I guess that this ticket can be closed. Please leave feedback. Thanks.