removing blackness in ribbon plot

I am currently using the ribbon plotting function to plot a 678x13 matrix. I would like to use this figure in a report I am writing, yet because of the largness of the matrix I get an awful lot of black regions in the figure. Does anyone know how to remove this? I have included the figure to show you the problem.

Thanks in advance

[Mahdi]

Have you tried averaging the data within the matrix?

Have you tried using the width section of the ribbon command as in

ribbon(x,y,width)

[Ruben]

the width option has no effect. What do you mean with averaging the data within the matrix?

Answer 1

[Jonathan Epperl]

The black regions you are seeing are the gridlines along the 678 rows of your matrix. My suggestions:

Save the handles to the surfaces in h:

h = ribbon(M)

Then loop over all of them and set either of those options:

set(ii,'EdgeColor','none')
set(ii,'MeshStyle','column')
set(ii,'EdgeAlpha',.25)

The first removes all the grid lines, the second one removes them in the 'rows' direction, and the third one makes them less opaque. As a copy&paste-able example:

h = ribbon(double(rand([678,20])>.7));
for ii=h'
set(ii,'EdgeAlpha',.25)
end

[Ruben]

works like a charm, thank you very much!

[Joana Cabral]

Thanks!