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Re: Simple? problem [message #30072]

Tue, 09 April 2002 11:26

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

James Kuyper wrote:

> Ivan Valtchanov wrote:
...

>> x = randomu(s,1000)
>> y = randomu(s,1000)
...

>> dx = x-xgi
...

>> dy = y-ygi
>> dr2 = dx*dx+dy*dy
>> arg = -dr2/w2 > (-20.0) ; to avoid overflows
...

>> image[i,j] = total(exp(arg))
>
>
> 'arg' is a scalar, so exp(arg) is also a scalar. Therefore, the total()
> doesn't do anything useful. You could just as well say exp(arg).

My apologies, I didn't read your code carefully enough. For some reason
I was thinking that x and y were scalars.

Forget the rest of my message; I'll need to re-think it, and I'm a
little too busy to do that right now. However, I'm pretty sure something
a little more complex than what I wrote, but on the same lines, is feasible.

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[Message index]

		Re: Simple? problem By: James Kuyper on Tue, 09 April 2002 11:26
		Re: Simple? problem By: Jaco van Gorkom on Tue, 09 April 2002 10:52
		Re: Simple? problem By: James Kuyper on Tue, 09 April 2002 10:23
		Re: Simple? problem By: Ivan Valtchanov on Wed, 10 April 2002 01:13

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