comp.lang.idl-pvwave archive: archive » comparing numbers using WHERE doesn't work

Home » Public Forums » archive » comparing numbers using WHERE doesn't work

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

Re: comparing numbers using WHERE doesn't work [message #25373 is a reply to message #25243]

Mon, 04 June 2001 14:24

John-David T. Smith is currently offline

John-David T. Smith
Messages: 384
Registered: January 2000

Senior Member

"Miklos Z. Kiss" wrote:
>
> Hi folks:
> I have noticed a strange occurence when I try to compare a number with
> all the elements of an array. I'll show my situation in an example.
> Consider the following array:
> a = [2.0000, 2.1000, 2.2000, 2.3000, 2.4000, 2.5000, 2.6000].
> Let, x = 2.2000, y = 2.4000
> So, I want to find which elements of a match up with x and y.
> Naturally, I do the following:
>
> index0 = WHERE(a EQ x)
> index0 = index[0] ; convert from 1-D array to single integer.
> index1 = WHERE(a EQ y)
> index1 = index[0]

What is the vector "index" you reference? I think you must have meant

index0=index0[0]

JD

Report message to a moderator

[Message index]

		comparing numbers using WHERE doesn't work By: Miklos Z. Kiss on Sat, 02 June 2001 12:15
		Re: comparing numbers using WHERE doesn't work By: R.Bauer on Wed, 06 June 2001 04:47
		Re: comparing numbers using WHERE doesn't work By: Martin Schultz on Tue, 05 June 2001 06:18
		Re: comparing numbers using WHERE doesn't work By: John-David T. Smith on Mon, 04 June 2001 14:24

Previous Topic:	Re: interpolating missing data
Next Topic:	Re: IDL 5.4 and MacOS 9.1

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Oct 09 21:59:26 PDT 2025

Total time taken to generate the page: 1.03513 seconds