comp.lang.idl-pvwave archive: archive » call

Home » Public Forums » archive » call_external for file I/O

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

call_external for file I/O [message #13223]

Wed, 21 October 1998 00:00

Charlie Solomon
Messages: 10
Registered: September 1998

Junior Member

Hello experts,

Is anyone out there using call_external to read image files into a variable
on the Windows NT platform? I have used a c routine on the Solaris platform
called map_file, which bypasses the standard I/O layer and maps data
directly into/from memory, making data access very fast compared to using
IDL's built in file I/O utils. I did not write map_file, but my
understanding is that it utilizes features in unix which allow this sort of
memory mapping without going through the stdio layer. I would love to get
the same speed on my NT machine. Any ideas?

Thanks,
Charlie Solomon
Raytheon Systems Co., El Segundo

Report message to a moderator

[Message index]

		call_external for file I/O By: Charlie Solomon on Wed, 21 October 1998 00:00
		Re: call_external for file I/O By: korpela on Tue, 27 October 1998 00:00

Previous Topic:	Re: two surfaces on same plot?
Next Topic:	Re: 16 bit images?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Oct 16 03:47:28 PDT 2025

Total time taken to generate the page: 0.64293 seconds