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Re: reading portions of a large binary file [message #74268]

Sat, 08 January 2011 07:41

oxfordenergyservices is currently offline

oxfordenergyservices
Messages: 56
Registered: January 2009

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On Jan 8, 3:38 pm, geoff <oxfordenergyservi...@googlemail.com> wrote:
> On Jan 8, 3:00 pm, David Fanning <n...@dfanning.com> wrote:
>
>> geoff writes:
>>> if the answer I am looking for is read_binary, then I've found it!
>
>> The answer could well be Read_Binary, but the method
>> underlying that would be the associated variable method
>> of reading the data. See the ASSOC command in IDL.
>
> thanks. i used
>
> strip=read_binary('bin',data_start=na*4,data_type=4,data_dim s=[n2-
> n1+1])
>
> which seems to work fine except when na gets too big (my offset is 3
> billion or so)
>
> I assume I'll have the same problem in assoc because long ints don't
> go that high?
>
> i'm assuming this is not possible then for an offset greater than max
> of long?

ahh! long64. all working! thanks David

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[Message index]

		Re: reading portions of a large binary file By: oxfordenergyservices on Sat, 08 January 2011 07:41
		Re: reading portions of a large binary file By: oxfordenergyservices on Sat, 08 January 2011 07:38
		Re: reading portions of a large binary file By: David Fanning on Sat, 08 January 2011 07:00
		Re: reading portions of a large binary file By: oxfordenergyservices on Sat, 08 January 2011 05:17

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