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Re: plot_3dbox : array has too many elements [message #42570 is a reply to message #42568]

Wed, 16 February 2005 07:47

Paolo Grigis
Messages: 171
Registered: December 2003

Senior Member

Ralf Schaa wrote:
> Dear All,
>
> I like to use the plot_3dbox procedure to plot a satellite orbit. The
> cartesian positionvectors consists each of 27292 elements. I tried
> 27292L and 27292LL when initializing, but I keep getting the same error
> message : 'array has too many elements'.
>

Well, it looks like the program is trying to build an array (assuming
of float type) of 27292 by 27292 elements, which you just can't do in
idl on 32 bit systems:

IDL> a=fltarr(27292L,27292L)
% Array has too many elements.

To estimate the maximum size of an IDL array one can use the formula:

maxsize = (2L^31-1) / typesize

where typesize is the size of your datatype in byte (4 bytes
for float, 2 bytes for integers, 8 bytes for doubles etc.).
This means that the maximum size in bytes of a single array should
not be larger than 2GB.

Cheers,
Paolo

> What to do?
>
> Thanks already
>
> -Ralf

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[Message index]

		Re: plot_3dbox : array has too many elements By: Ralf Schaa on Wed, 16 February 2005 09:12
		Re: plot_3dbox : array has too many elements By: Paolo Grigis on Wed, 16 February 2005 07:47
		Re: plot_3dbox : array has too many elements By: David Fanning on Wed, 16 February 2005 06:29

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