Incorrect compass annotation in ximtool?

James Turner wrote on Jan 12, 2009

I think the N-E compass annotation in ximtool is rotated incorrectly. This is the annotation enabled by pressing "coords" from the toolbar and selecting the "compass" check box. It seems to me that the sense of the rotation is back to front when there are CD1_2 and CD2_1 elements.

For example, with the following WCS elements, ximtool (v1.3 or v2.0beta) shows North down-left and East up-left, whereas ds9 shows North down-right and East down-left, which is what I'd have expected from sketching it:

CD1_1   = -2.86791518040212E-05 / WCS matrix element 1 1
CD1_2   = -2.86977296724552E-05 / WCS matrix element 1 2
CD2_1   = 2.87179100916065E-05 / WCS matrix element 2 1
CD2_2   = -2.86749200926711E-05 / WCS matrix element 2 2

I also notice that in ximtool 2 beta, when I display an image after resizing the ximtool window, the panner image is redrawn on top of the compass annotation, making it no longer visible.

Thanks,

James.

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Mike Fitzpatrick wrote on Jan 12, 2009

I'm able to reproduce it and will have a look. Any chance you could send me a complete header?

The compass redraw is a known problem and already on the list, it's the one place where graphics are drawn into the display rather than done as markers.

Cheers,
-Mike

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James Turner wrote on Jan 12, 2009

I'll email it to you, since it's proprietary and that's probably more convenient anyway.

James.

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Last post on Jan 12, 2009