(Gramps version : AIO64-5.1.1-1, Operating System: Win10)
Hello,
I’ve found that geographic map web site and would know if it is possible to add it to the Gramps Geography view?
URL looks like that when zooming into the map:
http://rumsey.geogarage.com/maps/cassinige.html?lat=48.77791275550184&lon=2.5927734375&zoom=6
@PLegoux, you might also like mapire.eu. See also this older discussion.
Impossible to do. See the feature request: #4782
The map format is incompatible with the osm-gps-map library. I asked to the géoportail (IGN). I never received a correct answer.
I downloaded the whole map from cassini and its size is around 8.5gb.
If someone can transform this hierarchy from an image size of 512x512 to a size of 256x256, we might have a cassini map available in gramps.
A script to do that should be very interesting.
Don’t forget the format must be #Z/#Y/#X
I’m not sure this what you want to do but XnView, freeware for any OS flavour, have a batch function. Select pictures you want to change, i.e to resize them, define wanted ratio, here 50%, define an output directory if you want and let’s go.
XnView is not available on linux.
I have 182000 images to convert 
The real problem is to divide an image in 4 parts and to rename them.
I try this batch on one 500x500 px square picture:
Original:
Automaticaly cutted parts:
If you put them side by side:
On XnView website you can find debian distributions:
If you want I can try to cut some of your pictures, give me a ftp url to download them
This is a GUI application. Does this application exist in a “batch” way? 182,000 images are impossible to divide with this tool. It would take too long.
After that, the problem will be to manage the hierarchical place of these images in #Z/#Y/#X
I think it will be a very difficult and long task.
XnView* are not free applications because the sources are not available.
I think it will be easier with a real free tool called ImageMagick. It’s available in batch mode.
We can do that with : convert -crop 256x256 img.jpg img_%d.jpg
Yes, that works. Need to make a script to create all images.
I think it will be a very long process. The problem is not to divide the images, but to recreate the image tree.
I don’t know why you need to crop images but I find this, IIIF and a python library to use this normalization. It is used by Ligeo [fr], a french company which works for some french archives centers to crop registers images in little parts to display them more fastly. Does this could help you?
I don’t want to crop the images but to divide them.
gramps uses a library which uses the formats provided by openstreetmap or googlemap, ie:
http://x.y.z/#Z/#Y/#X
#Z is the zoom.
#X, # Y is the position of the tile on the map. each tile is size 256x256
The rumsey site uses an alternate access method and its tiles are 512x512. So I have to divide a 512x512 tile into 4 256x256 tiles.
Their library don’t help me.
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