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Re: array operations and memory consumption [message #57944 is a reply to message #57943]

Fri, 04 January 2008 15:16

don.woodraska
Messages: 13
Registered: October 2005

Junior Member

On Jan 4, 3:19 pm, dktr....@gmail.com wrote:
> Hi all,
>
> Apologies in advance if this is old hat ... I've got a question
> regarding IDL's memory usage that can be boiled down in the following
> example:
>
> IDL> a = BINDGEN(100,100,100)
> IDL> baseMem = (MEMORY())[0]
> IDL> a = a + 1
> IDL> PRINT, (MEMORY())[3] - baseMem
> 2000049

Consider using the increment operator like this:

IDL> a++

This does an increment in-place with little additional memory (a few
bytes). The assignment c-style operators like this one below, use
double the memory.

IDL> a += 1

I haven't seen MEMORY before. Is this new in 7.0? I use help,/memory
which doesn't behave like I expect.

Good luck,
Don

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[Message index]

		Re: array operations and memory consumption By: dktr.ted on Fri, 04 January 2008 15:55
		Re: array operations and memory consumption By: Michael Galloy on Fri, 04 January 2008 15:16
		Re: array operations and memory consumption By: don.woodraska on Fri, 04 January 2008 15:16

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