assign colarmap to multiple lines' lengths

I have a graph with weights associated to the edges. I plot the edges as lines and I would like to assign colors in a continuous colormap to each edge. Does any one know how to do it? Thanks.

Answer 1

[Kelly Kearney]

Do you mean something like this?

x = 1:10;
y = rand(1,10);
w = 1:10; % weights
patch([x NaN],[y NaN],[c NaN], 'edgecolor', 'interp', 'facecolor', 'none')

Answer 2

[Zhenjia]

Yes, "patch" seems the right command for my problem. However, I have two lines crossing with each other. For "Patch", I have to divide these two lines into four lines. Is there any way to keep two lines? I want to keep the color the same for each line, even though it is crossed by other line. Thanks.

[Walter Roberson]

patch would not require that you divide the lines if you do not want the crossing to influence the coloring.