| Re: Array matching? [message #50152] |
Fri, 15 September 2006 14:24 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Greg writes:
> If it's supposed to be a secret to the unitiated, perhaps you shouldn't
> post the tutorial on the wonders of histogram in a place where anyone
> using google can easily find it?
Humm. You you may have a point there. I wonder
why it is so seldom read, then? :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: Array matching? [message #50153 is a reply to message #50152] |
Fri, 15 September 2006 14:18  |
gknoke
Messages: 9
Registered: September 2006
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Junior Member |
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David Fanning wrote:
> P.S. Someone made a serious mistake because you are
> not suppose to know about this until AFTER you have
> learned the secret handshake. I'll be filing a report
> with the IEPA chairman, you can be sure!
If it's supposed to be a secret to the unitiated, perhaps you shouldn't
post the tutorial on the wonders of histogram in a place where anyone
using google can easily find it?
--Greg
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| Re: Array matching? [message #50159 is a reply to message #50153] |
Fri, 15 September 2006 13:50 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Greg writes:
> Thanks for the tip. I'm still relatively new to IDL, I really had no
> idea all the things histogram was capable of. Such an unassuming
> function name with so much potential...
Yeah, well, keep it to yourself. Word of this leaks
out and we will be absolutely inundated with MatLab
users over here. :-(
Cheers,
David
P.S. Someone made a serious mistake because you are
not suppose to know about this until AFTER you have
learned the secret handshake. I'll be filing a report
with the IEPA chairman, you can be sure!
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: Array matching? [message #50161 is a reply to message #50159] |
Fri, 15 September 2006 13:37 |
gknoke
Messages: 9
Registered: September 2006
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Junior Member |
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Thanks for the tip. I'm still relatively new to IDL, I really had no
idea all the things histogram was capable of. Such an unassuming
function name with so much potential...
--Greg
Jean H. wrote:
> For the 2nd time today, what about reading
> http://www.dfanning.com/tips/histogram_tutorial.html
>
> Jean
>
>> match = where(hi eq lo)
>> hits = hi[match]
>> dat[hits] = (dat[hits -1] + dat[hits+1])/2.
>>
>> but I'm not sure how to compare two arrays in IDL to find the indices
>> where the values in one array match the values in another array without
>> using a for loop.
>>
>> Any clever ideas how to do this would be appreciated.
>>
>> --Greg
>>
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| Re: Array matching? [message #50177 is a reply to message #50161] |
Thu, 14 September 2006 15:44 |
Jean H.
Messages: 472
Registered: July 2006
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Senior Member |
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For the 2nd time today, what about reading
http://www.dfanning.com/tips/histogram_tutorial.html
Jean
> match = where(hi eq lo)
> hits = hi[match]
> dat[hits] = (dat[hits -1] + dat[hits+1])/2.
>
> but I'm not sure how to compare two arrays in IDL to find the indices
> where the values in one array match the values in another array without
> using a for loop.
>
> Any clever ideas how to do this would be appreciated.
>
> --Greg
>
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