Posted by dxli on Apr 23, 2015; 3:15am
URL: https://forum.librecad.org/Scaling-imported-images-tp5711385p5711387.html

The images are inserted in dimension of pixels. (not really desired behavior).

If you want to the imported image to be specific size in drawing units, say 50 feet. Assume the "Current drawing preferences -> units" is set to use feet.

1, in snaptoolbar, click "Snap to end points" only, disable other snapping options;
2, use Info -> Distance Point to Point, to find side length (currently, it's in pixels); For example, if the image square has side length at 1024 (pixels) from "Info -> Distance Point to Point"
3, Modify->Scale, to do isotropic scaling by a factor of 50/1024 (you can type this in dialog factor box.

Colinfontaine wrote

I am having trouble finding the answer to this...

I am interested in creating a scale for an entire image that I have imported to LibreCAD.  The image is a basemap of my house and I know definitive dimensions from the image.  My question is which tool I use to tell LibreCAD a dimension is a specific number (like 50') and then have LibreCAD automatically scale the rest of the image to that command.

I have seen people do this in AutoCAD with the scale command, what is the analog with LibreCAD?

Thank you.