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Re: Regarding the Fit_Ellipse Program [message #58971 is a reply to message #58876]

Tue, 26 February 2008 13:38

plim.dreaming
Messages: 22
Registered: February 2008

Junior Member

So, I used contour to obtain the x and y positions of a certain
contour level and labeled those arrays as posx and posy.
then obtained the positions in terms of the device, because that is
what polyfillv uses:
D = convert_coord(posx,posy, /to_device)

I did a print,!D.x_size to get the device sizes (it gave me the famous
17780) so I did:
result = polyfillv(D(0,*),D(1,*),17780,17780)
plots,fit_ellipse(result)

It is unable to allocate memory for the fit_ellipse part.
Is the !D.x_size related to the monitor size or the monitor resolution
or the postscript resolution or non-of-the-above?

And with the IDLanROI I finally made the object
blob = OBJ_NEW( 'IDLanROI', posx, posy ) and have to say that I
certainly was/am scared by wording such as: "Init methods are special
life cycle methods..."!?
I am right now trying to figure out how to type in this new language
Result = Obj->[IDLanROI::]ComputeMask(
to get from here to fitting an ellipse to the object and getting the
semi-major and semi-minor axis.

Much thanks,
"Bruno Schmidt of Northern Florida State University"

- so honey what did you do at work all day today?
- oh, i drew an ellipse...

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[Message index]

		Re: Regarding the Fit_Ellipse Program By: David Fanning on Tue, 26 February 2008 12:44
		Re: Regarding the Fit_Ellipse Program By: plim.dreaming on Tue, 26 February 2008 08:57
		Re: Regarding the Fit_Ellipse Program By: David Fanning on Tue, 26 February 2008 06:46
		Re: Regarding the Fit_Ellipse Program By: plim.dreaming on Tue, 26 February 2008 13:38

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