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

Home » Public Forums » archive » Re: 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 #25241]

Sat, 02 June 2001 15:19

Ken Mankoff
Messages: 158
Registered: February 2000

Senior Member

On Sat, 2 Jun 2001, 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:
> [snip]
> index0 = WHERE(a EQ x)
> index0 = index[0] ; convert from 1-D array to single integer.
> index1 = WHERE(a EQ y)
> index1 = index[0]

I'm not sure why this is happening to you. It works correctly on my
machine. But you can simplify your WHERE query and subsequent
array-to-integer like this:

index0 = ( WHERE(a EQ x) )[0]

-k.

--
Ken Mankoff
LASP://303.492.3264
http://lasp.colorado.edu/~mankoff/

Report message to a moderator

[Message index]

		Re: comparing numbers using WHERE doesn't work By: Ken Mankoff on Sat, 02 June 2001 15:19
		Re: comparing numbers using WHERE doesn't work By: Paul Woodford on Sat, 02 June 2001 14:10

Previous Topic:	Removing stray clusters of points
Next Topic:	Cannot read top level base window

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Tue Dec 02 08:41:45 PST 2025

Total time taken to generate the page: 2.07836 seconds