Re: Plot on a figure generated with imagesc()

[Søren Hauberg]

Hi

tir, 21 12 2010 kl. 18:13 +0100, skrev José Luis García Pallero:
> I have a digital elevation model as a matrix that I plot via imagesc()
> function. Later I need to plot some coastlines on the previous plot.
> As the axis of coordinates generated with imagesc() account for the
> pixel index I don't know how can I plot the coastline without
> transform the coordinates to the limits defines by the rows and
> columns of the image. Exists any function to plot with imagesc and
> produce a "referenced" (other coordinates different of the rows and
> columns) image?

I am a bit unsure of what you want, but it sounds like you could just do
something like

  I = rand (100);
  imagesc ([1, 10], [1, 10], I);
  hold on, plot ([5, 10], [5, 10], '*-', 'linewidth', 2), hold off

(adapt to your situation). Basically, 'imagesc' allows you to pass
minimum and maximum values of the axes.

Søren