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Re: PARTVELVEC procedure not overplotting despite setting OVER keyword;Trouble with OPLOT [message #77083]

Fri, 29 July 2011 07:18

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

partvelvec definitely expects data coordinates. For example:

; define data coordinates for arrows
xarrow = rebin(0.5 + findgen(10), 10, 10, /sample)
yarrow = rebin(0.5 + findgen(1,10), 10, 10, /sample)
; define vectors
grad_intensity_x = randomn(seed, 10, 10)
grad_intensity_y = randomn(seed, 10, 10)

; draw a background image with axes
cgimage, dist(10), /scale, /axes
; put on the vector field
partvelvec, grad_intensity_x, grad_intensity_y, xarrow, yarrow, /over

-Jeremy.

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Re: PARTVELVEC procedure not overplotting despite setting OVER keyword;Trouble with OPLOT

By: Jeremy Bailin on Fri, 29 July 2011 07:18

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