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Home - General / All posts - Unable to add control points to an image
#13-Aug-25 22:23

I am new to manifold and an experienced analyst.

For the life of me, I can not figure out why I cannot add control points to and image and the control points that I add to a drawing will not save!

Any hints to what I am doing wrong?

Thanks

oeaulong

556 post(s)
#13-Aug-25 22:33

Best advice on this is to precisely work through the example from the manual, step by step, reading all the pertinent info. No lie, It can be a tricky workflow with overwriting of the control points easily. Also easy is to make a mistake and not fully select & edit to delete the mistake point number. extra points get added, numbers get out of sequence, etc. Go slowly with a handful of points at a time.

I find best practices are to add a few points to the image, save the Control Points then immediately rename those two layers (points+table) to reflect the unprojected image. Then when adding matching points to the reference map do a ssimilar process to save and rename that component. Things become a little easier if the image is added to the map especially if they are in similar projections.

wvayens
129 post(s)
#14-Aug-25 13:44

THe Manifold Sales channel on YouTube has a couple of videos that are helpful. I usually refer to this one, since I can't seem to intuitively get it right the first time!

https://www.youtube.com/watch?v=XcrdTd6GhQM

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