The image overlay is going to be easier.
On my side, i search and test a lot to avoid to post for nothing and boring you.
So i use QGIS to georerence an image and a great CD (OSGEO) with a map tiler.
It gave me more comprehension of what you told me
Now, i have a question about the new function (ground overlay).
I have my image and i want to include it as a path using the ground overlay.
I can see you have a field "bounds" to localize the image with lat1, long1, lat2, long2.
In QGis, with my georeferenced image, i have 4 coordinates :
North : 5828204.780927823
South : 5813665.623325179
West : 573292.2276555998
East : 589339.9268656841
Is this what i have to put in Lat and long ?
If so, in what order ?
If not, do you know how i can transform this values to fit in ZhGooglemap ?
Thanks again Dima for your great work. Really.
You can search the web, or just do simple:
1 - when you upload your image, you should set bounds for ground overlay.
2 - this image will be zoomed to this bounds.
3 - bounds - lat1,lng1 - left bottom corner; lat2,lng2 - right top corner, ie south west, north east.
4 - if you open path, the first tab, there is a field "Current coordinates". If you click on map, this field contains coordinates, where you click on map
Just copy - paste for each bound, separate bound coordinate pair by semicolon
Finally, you will have image, and its two corners have to points to bounds.
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