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Re: Speeding up I/O [message #38526]

Wed, 17 March 2004 08:49

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"Ken Knapp" <Ken.Knapp@REMOVEnoaa.gov> wrote in message
news:c39jvi$r1l$1@news.nems.noaa.gov...
> Marc Schellens wrote:
>>
>> The fastest you can get would be to read in one array instead of
>> an array of structures:
>>
>> image = intarr( 128/2 + 1250, 1250)
>> openr,1,file
>> readu,1,image
>> close,1
>>
>> Then you have to separate the header yourself and convert it
>> back to byte.
>
> OK. That sounds good, but is there a good/fast way to get the header
> information back to byte? How about if the header were a mixture of byte
> and int's? It seems to me I'd need some sort of function that would
> allow me to read from one variable to another ... kind of like the ReadS
> routine, but "binary-style"??

Use the BYTE() function with the offset parameter.

-Rick

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[Message index]

		Re: Speeding up I/O By: Rick Towler on Wed, 17 March 2004 08:49
		Re: Speeding up I/O By: Ken Knapp on Wed, 17 March 2004 05:19
		Re: Speeding up I/O By: schaa on Wed, 17 March 2004 00:41
		Re: Speeding up I/O By: marc schellens[1] on Tue, 16 March 2004 19:09
		Re: Speeding up I/O By: R.G. Stockwell on Tue, 16 March 2004 15:53

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