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'ruler' question

Sep 19, 2011, 03:49
Post: #1
'ruler' question
Is there any way to make the image visible, when I move the image into the negative coordinates on the ruler? (I hope that makes sense)

Im basically trying to use gimp to track coordinates on an a map image, and gimp would work perfect for it, if the picture was visible in the negative range. I want to put 0,0 in the middle of the picture, and move my curser to a spot on the map, and write down the ruler coordinates, but it would only do it for x positive, and y positive quarter of the image, and I need it for the negative sections as well.

I know this is probably a strange request, but it seems like there should be a way to either renumber the ruler, or make the negatives visible.

I appreciate your help if you can figure this one out.
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Sep 19, 2011, 06:27
Post: #2
RE: 'ruler' question
Nope. The ruler is a position over the "canvas".

However, you can have your own overlay layer with all kind of rulers on it.

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Sep 19, 2011, 14:04
Post: #3
RE: 'ruler' question
What about the measurement tool? I am not sure, but can you not use the this tool and lock it to the ruler?

[Image: 6216880253_3c00e6165e.jpg]

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Sep 19, 2011, 16:39
Post: #4
RE: 'ruler' question
(Sep 19, 2011 14:04)diginin Wrote:  What about the measurement tool? I am not sure, but can you not use the this tool and lock it to the ruler?
Nice suggestion... use one or two guides to define your "origin", and then use the measurement tool. Caution: the Measure tool measures diagonals. To make sure you are measure along the X and Y axes, hold the Control key for "constrained angles", ie:

- click on point
- drag towards guide
- depress Control key, measure is forced at 15° angles
- continue towards guide, the pointer will snap to it

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