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Re: Talking with my C data [message #13434 is a reply to message #13429]

Thu, 12 November 1998 00:00

Luis Oliveira
Messages: 4
Registered: November 1998

Junior Member

Eric Williams <eric@astro.wesleyan.edu> wrote:
> Howdy, (...)
> I am collecting images with a CCD using C code I wrote with some
> supplied C libraries we purchased with the camera. Right now once the
> data is readout from the camera it is stored in a data stream in memory
> and is then put into a file using fwrite. I have a couple of questions:
>
> Once the data is read out of the camera into memory can I use IDL to
> read the data from the memory or should I continue to have C write the
> data with fwrite and then can I have IDL read that data from the file
> created with fwrite? In either case I am not sure how to make IDL get
> the data.
> (...)

Hi,

I've had the same problem and I made the option to let the C code generated
program write the data to a file. Then I've created structures in IDL that
mimic the C structures and used READU procedure.

The only problem is to create arrays of bytes instead of string variables
in the structures. Use also named structures, cause the fields don't change
of data type.

About call_external or linkimage, I'm sorry, but I didn't tryed that...

Hope this helps,

Luis

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[Message index]

		Re: Talking with my C data By: davidf on Fri, 13 November 1998 00:00
		Re: Talking with my C data By: steinhh on Fri, 13 November 1998 00:00
		Re: Talking with my C data By: Luis Oliveira on Thu, 12 November 1998 00:00

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