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Programming > Idl-pvware > Re: concatenate...
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Re: concatenate arrays of different sizes

by "R.G. Stockwell" <nothanks@[EMAIL PROTECTED] > Mar 27, 2008 at 10:42 AM

"vino" <astrocrazy@[EMAIL PROTECTED]
> wrote in message 
news:98fa711f-7d7e-4131-a70a-a75dfe22850d@[EMAIL PROTECTED]
> Hello Everyone,
> I am trying to concatenate arrays of different sizes into a single
> variable.The problem is as follows:
> I am tracking about 10,000 stars through a period of six months. I
> have a single variable containing the intensity of all stars with
> zeros when the star is not in the field of view.  I ran into memory
> problems when i try to track for longer periods.

What is time sampling on those?

You have intensity (float?) for 10k stars, by how many times in that siz 
months?

Every ten minutes, fits into my winxp laptop  just fine.

ie a = fltarr(10000,6*30*24*6)


Some suggestions:
Perhaps you could downsample the intensity time series - do
you really need that high time resultion?

You could categorize the stars into groups (based on quadrant in
the sky, or on magnitude) and analyze the groups seperately.

You make a pointer array for each star, 10k pointers where each pointer
points to a strucutre which holds the time and intensity
for when it is in view.


Cheers,
bob
 




 4 Posts in Topic:
concatenate arrays of different sizes
vino <astrocrazy@[EMAI  2008-03-27 08:34:14 
Re: concatenate arrays of different sizes
Vince Hradil <hradilv@  2008-03-27 08:48:36 
Re: concatenate arrays of different sizes
"R.G. Stockwell"  2008-03-27 10:42:09 
Re: concatenate arrays of different sizes
vino <astrocrazy@[EMAI  2008-03-28 02:01:33 

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tan12V112 Wed Dec 3 21:30:45 CST 2008.