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Re: Reset fonts / Problem with colorbuttonbitmap.pro from D. Fanning [message #61403 is a reply to message #61279]

Wed, 16 July 2008 02:41

jameskuyper
Messages: 79
Registered: October 2007

Member

Justus Skorps wrote:
> On 15 Jul., 21:21, Jeremy Bailin <astroco...@gmail.com> wrote:
>>> Fonts are not the only thing totally screwed up in IDL...just look at
>>> the 'where' command...
>> I'm just curious... what about WHERE do you find screwed up? In my
>> experience, it always behaves very predictably!
>>
>> -Jeremy.
>
> The 'problem' is when no element matches the condition...you always
> have to use the count parameter to check if the result is an usable
> index..
>
> for example, if I have an array A and I want to set all elements less
> than 0 to 0..then I would like to use a command like
>
> A[where(A lt 0)]=0
>
> But this works only if there is at least one element in A less than
> 0...so you always have to use two lines of code for such a simple
> thing..

A valid issue; but to call it "screwed up", you should have some more
convenient alternative approach in mind. What would that alternative be?
What would SkorpesWhere do when no element matches the condition?

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[Message index]

		Reset fonts / Problem with colorbuttonbitmap.pro from D. Fanning By: Justus Skorps on Mon, 14 July 2008 04:10
		Re: Reset fonts / Problem with colorbuttonbitmap.pro from D. Fanning By: jschwab@gmail.com on Wed, 16 July 2008 07:02
		Re: Reset fonts / Problem with colorbuttonbitmap.pro from D. Fanning By: Carsten Lechte on Wed, 16 July 2008 05:41
		Re: Reset fonts / Problem with colorbuttonbitmap.pro from D. Fanning By: jameskuyper on Wed, 16 July 2008 02:41
		Re: Reset fonts / Problem with colorbuttonbitmap.pro from D. Fanning By: Justus Skorps on Tue, 15 July 2008 23:22

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