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Re: Gradient of two dimensional field [message #8299 is a reply to message #8200]

Wed, 19 February 1997 00:00

Mirko Vukovic
Messages: 124
Registered: January 1996

Senior Member

Andy Loughe wrote:
>
> Wilpert_Martin wrote:
>>
>> Hi everybody,
>>
>> we want to determine the electrical field from a given potential,
>> i.e. we have to calculate the gradient of a two dimensional array.
>>
>> Has anybody a idl-pvwave procedure to do this task?
>>
>> Thank you in advance
>> Martin Wilpert
>
> I would think that the shift function (used twice)
> could be used to do this.
>
> --
> Andrew F. Loughe |
> afl@cdc.noaa.gov
> University of Colorado, CIRES Box 449 |
> http://cdc.noaa.gov/~afl
> Boulder, CO 80309-0449 | phn:(303)492-0707
> fax:(303)497-7013
> ------------------------------------------------------------ ---------------
> "I do not feel obliged to believe that the same God who has endowed us
> with
> sense, reason, and intellect has intended us to forego their use."
> -Galileo
or, convolve with a kernel that will give you the gradient.
(we are talking two kernels, one for each direction)
--
Mirko Vukovic, Ph.D 3075 Hansen Way M/S K-109
Varian Associates Palo Alto, CA, 94304
415/424-4969 mirko.vukovic@varian.grc.com

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[Message index]

		Gradient of two dimensional field By: Wilpert_Martin on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: Andy Loughe on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: davidf on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: stockwell on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: Andy Loughe on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: bowman on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: brian.jackel on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: Mirko Vukovic on Wed, 19 February 1997 00:00
		Re: Gradient of two dimensional field By: Andy Loughe on Mon, 03 March 1997 00:00

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