plot of 2D-Matrix, frequency/duration

Hi all, I have matrix showing how long a electrcal device was working at a certain current and a certain temperature in SECONDS, e.g.

ans =

1.0e+004 *

         0         0         0         0         0
    0.0060    0.0268    0.1049    0.1551         0
    0.1889    0.0697    1.2819    0.5237         0
    0.0229    0.0254    0.1810    0.2097         0
         0         0         0         0         0

and you can define the columns (x-Axis) as Voltage: ans =

   270   285   315   345   360

and the rows (y-Axis) as Temperature

ans =

    20
    25
    35
    45
    50

Do you know any possibility how to show those duration graphically? One possibility could be to have a matrix of points and the size of the points to be dependant of the values, but I don't know how to do this.

Thanks a lot for your help! Oli

Answer 1

[Daniel Shub]

Something like:

 [x, y] = meshgrid(1:5, 1:5);
 z = 20*rand(5, 5);
 scatter(x(:), y(:), z(:))

Answer 2

[Image Analyst]

Try calling plot() first (to get lines between the points if you want that), and then call "hold on" and scatter() after that. Scatter() take an argument where you can specify the marker sizes.

Also, this link may interest you http://www.ncgia.ucsb.edu/projects/Cartogram_Central/gallery.html

Answer 3

[Olli]

Yep, that's brilliant. Thanks a lot!