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programmatically guess image dimensions? [message #45121]

Thu, 11 August 2005 08:41

Jeff N.
Messages: 120
Registered: April 2005

Senior Member

Hi everyone,

I have managed to run across several situations where I've wanted to
take tabular data and make a "pseudo-image" cube out of the data so
that I could easily use some of ENVI's statisical routines. What I want
to do is write code that, given the number of records in the tabular
data, comes up with the best dimensions for the pseudo-image cube. So,
for example, if i have 9 records with 4 columns of tabular data, i'd
like my code to tell me that this should end up being a 3x3x4 cube. If
I have 13 records, I'd like it to tell me to arrange those in a 3x5
grid, with 2 "empty" pixels containing 0's. So my question is, does
anyone know a good way to come up with the largest rectangle I can make
to use as my image dimensions, with the fewest number of empty pixels?
I won't have a huge number of records, so I don't *think* I need to
make computational efficiency top priority. Anybody have any ideas to
get me started?

Thanks!
Jeff

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By: Jeff N. on Thu, 11 August 2005 08:41

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