Precise relative positioning of layers
Posted: Sat Apr 06, 2019 2:08 pm
I'm trying to merge 3 maps into a single map - each map is the order of 50 megapixel, although quite small files (2 -3 MB).
The maps are from the same source and should go together nicely, like a jigsaw
I've removed detail from around the edges I don't want and converted to a transparent background. I'm putting the maps in different layers and then using Layer -> Transform .... to adjust one layer relative to the other. Then I'll merge them down into a single layer.
In principle, I think this should work - unless there's a better way?
I can't, however, shift, scale and rotate one layer with respect to the background layer with sufficient precision - the sliders are too coarse.
I would like to be able to adjust rotations by perhaps 0.1º, shift by almost pixel precision and scale to perhaps 0.1%, maybe even moreprecisely ...
Thanks,
regards,
Larry Stoter
The maps are from the same source and should go together nicely, like a jigsaw
I've removed detail from around the edges I don't want and converted to a transparent background. I'm putting the maps in different layers and then using Layer -> Transform .... to adjust one layer relative to the other. Then I'll merge them down into a single layer.
In principle, I think this should work - unless there's a better way?
I can't, however, shift, scale and rotate one layer with respect to the background layer with sufficient precision - the sliders are too coarse.
I would like to be able to adjust rotations by perhaps 0.1º, shift by almost pixel precision and scale to perhaps 0.1%, maybe even moreprecisely ...
Thanks,
regards,
Larry Stoter