comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » A[X,Y,Z] -> A[Z,X,Y]

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: A[X,Y,Z] -> A[Z,X,Y] [message #21174 is a reply to message #21081]

Wed, 09 August 2000 00:00

greenwoodde
Messages: 10
Registered: October 1996

Junior Member

Paul van Delst <pvandelst@ncep.noaa.gov> wrote:
> "Liam E. Gumley" wrote:
>>
>> Dave Greenwood wrote:
>>>
>>> I'm trying to analyze data from a new experiment using an IDL code from
>>> a different experiment. The new experiment has data stored in an array
>>> of the form [X,Y,Z] while the code expects [Z,Y,X]. I can do something
>>> like (untested):
>>>
>>> FOR i = 0, z-1 DO BEGIN
>>> FOR j = 0, y-1 DO BEGIN
>>> newarray[i, y, *] = oldarray[*, y, i]
>>> ENDFOR
>>> ENDFOR
>>>
>>> But I thought perhaps someone (probably several people) here could
>>> suggest a better (faster, more elegant, etc.) way?
>>>
>>> Fyi, to give some size to the problem, X=1024, Y=39 and Z=3.
>>
>> a = findgen(1024, 39, 3)
>> b = transpose(a, [2, 0, 1])
>> help, b
>> B FLOAT = Array[3, 1024, 39]
>
> Not to be to ZYX'y about it, but how about
>
> IDL> a = findgen(1024, 39, 3)
> IDL> help, transpose(a, [2, 1, 0])
> <Expression> FLOAT = Array[3, 39, 1024]

Thanks. I guess it's time to get a new reference manual. Mine only
shows one argument for transpose ;-(

Dave
--------------
Dave Greenwood Email: Greenwoodde@ORNL.GOV
Oak Ridge National Lab %STD-W-DISCLAIMER, I only speak for myself

Report message to a moderator

[Message index]

		A[X,Y,Z] -> A[Z,X,Y] By: greenwoodde on Wed, 09 August 2000 00:00
		Re: A[X,Y,Z] -> A[Z,X,Y] By: greenwoodde on Wed, 09 August 2000 00:00
		Re: A[X,Y,Z] -> A[Z,X,Y] By: Paul van Delst on Wed, 09 August 2000 00:00

Previous Topic:	Re: A[X,Y,Z] -> A[Z,X,Y]
Next Topic:	Re: Reverse FFT ?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 16:32:30 PDT 2025

Total time taken to generate the page: 0.01274 seconds