plot of 2D-Matrix, frequency/duration

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Olli
Olli 2011-10-2
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

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采纳的回答

Daniel Shub
Daniel Shub 2011-10-2
Something like:
[x, y] = meshgrid(1:5, 1:5);
z = 20*rand(5, 5);
scatter(x(:), y(:), z(:))

更多回答（2 个）

Image Analyst
Image Analyst 2011-10-2
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
Olli
Olli 2011-10-2
Yep, that's brilliant. Thanks a lot!

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