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Re: Reading large Ascii files [message #27633 is a reply to message #27632]

Tue, 30 October 2001 08:30

Med Bennett
Messages: 109
Registered: April 1997

Senior Member

Isa Usman wrote:

> Hello,
>
> I am trying to read a single row from a large file. The amout of numbers per
> row is about 12500. So in IDL i have the following lines;
>
> readf,lun,format='(500F8.3)',ch1_val_s
>
> so that i only read 500 values at a time and it gives me the error;
>
> % Input line is too long for input buffer of 32767 characters.
>
> From what i can gather, IDL is trying to read the whole line first before it
> puts it into the array. Can anybody suggest a way round this please.
>
> Thanks
>
> Isa Usman

Yes - I think in this situation you will have to use readu to read the whole
file in to a very long byte array and then use where and the various string
commands to extract the data.

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[Message index]

		Re: Reading large Ascii files By: Craig Markwardt on Tue, 30 October 2001 09:24
		Re: Reading large Ascii files By: Isa Usman on Tue, 30 October 2001 08:48
		Re: Reading large Ascii files By: Med Bennett on Tue, 30 October 2001 08:30
		Re: Reading large Ascii files By: Pavel A. Romashkin on Tue, 30 October 2001 08:28
		Re: Reading large Ascii files By: Martin Downing on Tue, 30 October 2001 07:01

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