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Re: help needed to make the program run faster [message #93623 is a reply to message #93621]

Fri, 09 September 2016 07:35

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Friday, September 9, 2016 at 2:04:57 AM UTC-4, sid wrote:
> Hi all,
> I need to read 500 fits files and do analysis for all this,
>
> So im doing like this,
>
> file=file_search('*.fts')
> nn=n_elements(file)
> for ii=0,nn-1 do begin
> img=readfits(file(ii),h)
> ----
> ---some analysis----
>
> endfor
> end
>
> in the analysis part also i have some for loops so the program takes so much time to process this job.
>
> So can anybody let me know whether any other faster methods are there to do this.

This part of the loop should take very little. Try it yourself. Just remove the "analysis" part, and keep the FOR loop and READFITS() parts. You should see it completes pretty quickly. Or if it doesn't, it means you have a lot of data, and you will have to live with it (or get a faster computer and/or hard drive).

This will help you focus your efforts on the analysis parts. There, of course, you will want to vectorize as much as possible.

Craig

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[Message index]

		help needed to make the program run faster By: gunvicsin11 on Thu, 08 September 2016 23:04
		Re: help needed to make the program run faster By: Markus Schmassmann on Fri, 09 September 2016 02:11
		Re: help needed to make the program run faster By: wlandsman on Fri, 09 September 2016 07:39
		Re: help needed to make the program run faster By: gunvicsin11 on Sun, 11 September 2016 20:58
		Re: help needed to make the program run faster By: Markus Schmassmann on Mon, 12 September 2016 01:52
		Re: help needed to make the program run faster By: Jeremy Bailin on Thu, 22 September 2016 14:17
		Re: help needed to make the program run faster By: Craig Markwardt on Fri, 09 September 2016 07:35

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