| Help: Plotting 3d data as 2d intensity map or histogram [message #41426] |
Thu, 21 October 2004 20:07 |
gianguido
Messages: 2
Registered: October 2004
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Junior Member |
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Hi everyone,
here's my problem:
I have an 3 x N array. the 3 cols represent r,t and F(r,t). I don't
know what the function F is I just have some noisy data to fill the
matrix.
I would like to compute a 2d image where the intensity of each pixel
is proportional to the average value of F(r,t) and where the
coordinates of the pixel in question is related to the value of r and
t.
I have two further points:
1) r and t are continuous so I would like to create bins along the
axes
2) within a given bin (or a given r and t range) F(r,t) can have
different values, so I need to compute the average of F over the bin.
I thought hist_2d could do it but that is not what I need... any help
or suggestions? I have no idea about how to go about coding...
Many thanks for any help you can give!
Gianguido
PS: this group seems more active than the "plain" lang.idl. what is
the difference between idl and idl-pvwave?
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