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Re: circles [message #9516 is a reply to message #9512]

Wed, 09 July 1997 00:00

Martin Lizak (NEI)
Messages: 1
Registered: July 1997

Junior Member

lady of the elves wrote:
>
> [incidentally, I'm new to this language :)]
A simpler way to to that is as follows

function makecircle
im=bytarr(200,200)

; if you make the angular resolution too small, you'll have blank lines
theta=findgen(1000)*!pi/1000. - !pi/2.

for i=0,999 do begin
y=fix(99.*sin(theta(i)))+100
xmin=-fix(99.*cos(theta(i)))+100
xmax=fix(99.*cos(theta(i)))+100
im(xmin:xmax,y)=2
endfor
return,im
end

>
> I'm trying to create a two-dimensional array, such that tvscl of the
> array will show a filled circle. So far, my best idea has not
> worked--but here it is:
>
.
.
> I would really like to have a circularly-filled array; if anyone has
> better knowledge, please let me know :)
> Thanks.
> -gzb

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[Message index]

		Re: circles By: Kevin Reardon on Fri, 11 July 1997 00:00
		Re: circles By: pit on Thu, 10 July 1997 00:00
		Re: circles By: Joseph M Zawodny on Thu, 10 July 1997 00:00
		Re: circles By: Martin Lizak (NEI) on Wed, 09 July 1997 00:00
		Re: circles By: David Foster on Wed, 09 July 1997 00:00

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