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Create curves [message #92124]

Fri, 16 October 2015 06:41

g.nacarts
Messages: 148
Registered: November 2013

Senior Member

Hi

I created an ellipsoid shape as follows

NX=128
NY=128
Ellipxe = fltarr(NX,NY)

for i=0L, NX-1 do begin
for j=0L, NY-1 do begin
if (0.1*(j-50)^2.+0.23*(i-95)^2. LT 100) then begin
Ellipse[i,j] = 10.
endif
endfor
endfor
tvscl, Ellipse

I wanted to change the direction of the ellipse to be diagonal (i.e. not plotted vertically). Does anyone knows how to do that?

Also I found that the bean curve in Cartesian coordinates has the following form:

(x^2+y^2)^2 = x^3+y^3

I tried the following but it doesn't work

NX=128
NY=128
Bean_curve = fltarr(NX,NY)

for i=0L, NX-1 do begin
for j=0L, NY-1 do begin
if ((0.1*(j)^2.+0.23*(i)^2.)^2. EQ (0.1*(j)^3.+0.23*(i)^3.)) then begin
Bean_Curve[i,j] = 10.
endif
endfor
endfor

tvscl, bean_Curve

Can anyone help with this?

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[Message index]

		Create curves By: g.nacarts on Fri, 16 October 2015 06:41
		Re: Create curves By: David Fanning on Fri, 16 October 2015 06:56
		Re: Create curves By: g.nacarts on Fri, 16 October 2015 07:13
		Re: Create curves By: Russell[1] on Fri, 16 October 2015 07:46
		Re: Create curves By: g.nacarts on Fri, 16 October 2015 08:56

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