02-08-2023, 05:48 PM
Well, Gimp is a raster (bitmap) editor not a CAD program and is not really meant for such purpose, although sometimes can be used.
Does this mean that that there is more than one layer coming from the scan, such as a multi-page PDF or Tif ?
..or have you added the scan to an existing image. Always better if you can give a screenshot of the problem.
If it is a layer over some other layer, no need to move it. Turn the layer visibility off. The layer eye icon in the layer dock.
Very-very unlikely, Although you can set a CAD origin anywhere in a drawing it is usually bottom and left so that co-ordinates remain positive.
Gimp on the other hand being a raster graphic program uses top left for the canvas origin. You can move layers and selections outside the canvas area and increase canvas size to accommodate the change but then the canvas origin is reassigned to top left
The Gimp move tool will move the active layer to a new position on the Gimp canvas The canvas still has 0, 0 top-left
Gimp does not make automatic Saves, if you do not Save as .xcf (or export in other format) then obviously no changes.
Quote:The coordinates of a fixed point in a drawing change after i use the move tool to move the drawing around so i can see other features and then return to the fixed point.
Does this mean that that there is more than one layer coming from the scan, such as a multi-page PDF or Tif ?
..or have you added the scan to an existing image. Always better if you can give a screenshot of the problem.
If it is a layer over some other layer, no need to move it. Turn the layer visibility off. The layer eye icon in the layer dock.
Quote:1) when an image is loaded into GIMP, the coordinate system of GIMP is aligned with the scanned data of the image.
Very-very unlikely, Although you can set a CAD origin anywhere in a drawing it is usually bottom and left so that co-ordinates remain positive.
Gimp on the other hand being a raster graphic program uses top left for the canvas origin. You can move layers and selections outside the canvas area and increase canvas size to accommodate the change but then the canvas origin is reassigned to top left
Quote:2) Using the GIMP Move tool, the tool moves only the viewer, not the drawing and its coordinate system.
The Gimp move tool will move the active layer to a new position on the Gimp canvas The canvas still has 0, 0 top-left
Quote:3) If i quit the drawing without making any changes in it, the coordinates of a fixed point within the image should have the exact same coordinates when the image is opened up once again.
Gimp does not make automatic Saves, if you do not Save as .xcf (or export in other format) then obviously no changes.