I have scanned a drawing of a property. I then imported the image. I was hoping to draw over the top of the property lines. I know the lengths of the property. I seem to recall there is a way to tell the unscaled line what the distance is but can't remember.
Importing an image and setting a distance or dimension
#3
Posted 18 May 2017 - 09:17 PM
What I do to check to see if the image is dimensionally accurate due to scan, copy, or other changes that can occur in the original, is to import the image and then draw various lines over the image on known dimensions. I compare the line lengths to get ratios of lines over various portions to get an average scale factor. Just how I do it to give me confidence. I can really move and edit line positions to get the best possible placement and then compare my ratios.
#4
Posted 19 May 2017 - 12:55 PM
I am probably doing something wrong. I import a pdf and then adjust scale by distance as Yvonne describes. If I use a horizontal dimension then the vertical size is off. The reverse is true if I use a vertical dimension to adjust size. Is there a 'maintain aspect ratio' button somewhere??
#7
Posted 21 May 2017 - 09:17 PM
Why not just do it old school? Measure a length that you know the distance of. Then do the ratio to figure out at what percentage you need to enlarge or decrease.
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