On 07/14/2014 09:47 PM, Elleroth wrote:
Hello,
Say I have an edge property (of type double) with values ranging from 0.0 to 1.0. I want this value to be set as the alpha for my edges or at least be used as the offset with the gradient option in the graph_draw function. The idea is that for edges with stronger weights, I can reduce the alpha. (Edges weighted at 0.0 will disappear.) How can I make that happen?
Using graph_draw(..., gradient=[values, 0, 0, 0, 1.0]) will not work, as the 0th index in the gradient option list must be a value from 0.0-1.0, and not some set or list or properties. There's got to be a way to do this, though. It's simple enough; I'm probably just missing something.
You can access the properties as 2d arrays as follows a = zeros((5, g.num_edges())) a[0] = values gradients = g.new_vertex_property("vector<double>") gradients.set_2d_array(a) graph_draw(g, gradients=gradients) Best, Tiago -- Tiago de Paula Peixoto <tiago@skewed.de>