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Pixel positions passing trough a curve [message #93733]

Tue, 11 October 2016 05:36

Miguel
Messages: 18
Registered: April 2015

Junior Member

Hi everyone,

I am trying to construct a program that produces a position-velocity diagram whose shape can be fitted by a certain equation (and plotted).

I wanted to know if it was possible to obtain somehow the pixels position trough a path I choose. For example, I draw a line (in ds9) from (0,0) to (10,0) and I want to know which pixels represent the line. In this case, the program would give (0,0), (1,0), (2,0),...,(10,0). The thing is that I want to draw an arbitrary path (not necesarily in ds9) and get automatically the points.

For the moment, I put a circle, in ds9, in each pixel of the path and obtain the list of pixel positions and saving the region in xy format. I use this catalogue as an input of my program.
If there is a way to do it automatically (or some ideas) or an already existing program, I would like to know more.

Thank you,
Miguel

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[Message index]

		Pixel positions passing trough a curve By: Miguel on Tue, 11 October 2016 05:36
		Re: Pixel positions passing trough a curve By: Helder Marchetto on Tue, 11 October 2016 06:05
		Re: Pixel positions passing trough a curve By: Helder Marchetto on Tue, 11 October 2016 07:01
		Re: Pixel positions passing trough a curve By: Miguel on Tue, 11 October 2016 07:30
		Re: Pixel positions passing trough a curve By: Markus Schmassmann on Tue, 11 October 2016 07:43
		Re: Pixel positions passing trough a curve By: Helder Marchetto on Tue, 11 October 2016 07:55
		Re: Pixel positions passing trough a curve By: Miguel on Tue, 11 October 2016 09:44

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