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

Home » Public Forums » archive » point_lun is slow

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

Re: point_lun is slow [message #17569 is a reply to message #17437]

Thu, 28 October 1999 00:00

George McCabe
Messages: 23
Registered: June 1997

Junior Member

Struan Gray wrote:

> simplest way to access this data be to use ASSOC to associate a huge
> array of 2-byte variables with the file and then subscript it as
> necessary to read in either frames or groups of individual pixels.

Struan,

ASSOC - certainly the simplest and also the fastest in cases where every
element of the data is needed. but when for example only the
[1538,395778,790018,... 434454018] location elements are needed from the
file it is faster to point_lun to each. furthermore, the size of each
associated read can affect the overall speed of a procedure. it's a
better understanding of this subtlety that i am hoping for.

george

Report message to a moderator

[Message index]

		point_lun is slow By: George McCabe on Wed, 27 October 1999 00:00
		Re: point_lun is slow By: korpela on Fri, 29 October 1999 00:00
		Re: point_lun is slow By: korpela on Fri, 29 October 1999 00:00
		Re: point_lun is slow By: Liam Gumley on Thu, 28 October 1999 00:00
		Re: point_lun is slow By: George McCabe on Thu, 28 October 1999 00:00
		Re: point_lun is slow By: Struan Gray on Thu, 28 October 1999 00:00
		Re: point_lun is slow By: <karri on Thu, 28 October 1999 00:00
		Re: point_lun is slow By: George McCabe on Mon, 01 November 1999 00:00

Previous Topic:	Is there a way to keep axis text from scaling?
Next Topic:	IDL 5.2.1 -- bug in filled contours?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 03:13:36 PDT 2025

Total time taken to generate the page: 1.44153 seconds