| Re: The continuing saga of WHERE and 2D [message #34241 is a reply to message #34240] |
Thu, 27 February 2003 12:55   |
Sean Raffuse
Messages: 46
Registered: July 2001
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Member |
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"David Fanning" <david@dfanning.com> wrote in message
news:MPG.18c829481a588402989b05@news.frii.com...
> Sean Raffuse (sean@me.wustl.edu) writes:
>
>> Ok, so I've found the nifty little WhereToMulti program that converts 1D
>> where() results back to the original 2d or 3d indices. My question, and
I
>> am sensing that it is a dumb one, is how can I use these returned
indices
>> properly?
>>
>> Example:
>>
>> ;the part that works (stolen wholesale from D Fanning's website)
>> index = WHERE(image EQ test)
>> s = SIZE(image)
>> ncol = s(1)
>> col = index MOD ncol
>> row = index / ncol
>>
>> ;the part I am confused about
>> image[col, row] = PassedTheTest
>>
>> *** Error, too many elements in array. . . and you're ugly. ***
>
> Say what!? I don't think so. :-)
>
> Are you sure all your variables are defined here, Sean?
> Let's see your real code and not this pseudo code.
>
Ok, you may disagree and same I look fabulous, but I still get the error.
Here is my code snippet. Let me know if you need more.
HighRedorGreenLand = where(MinArray8[*,*] GT default_Bd8WaterLimit $ ;pixel
is not water
AND ((Tau[*,*,5] GT Tau[*,*,0]) OR (Tau[*,*,4] GT
Tau[*,*,0])))
WhereToMulti, MinArray8, HighRedorGreenLand, x_mask, y_mask
Tau[x_mask,y_mask,*] = default_BelowDetLimit
ENVI> help, MinArray8
MINARRAY8 INT = Array[3600, 1680]
ENVI> help, Tau
TAU FLOAT = Array[3600, 1680, 8]
ENVI> help, HighRedorGreenLand
HIGHREDORGREENLAND
LONG = Array[1407735]
ENVI> help, x_mask
X_MASK LONG = Array[1407735]
ENVI> help, y_mask
Y_MASK LONG = Array[1407735]
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