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How do I automate the import of raster tiffs into tile mill?

I have well over 100 files.

I have many warped tiff files ready to be imported as individual layers into tile mill so they can be saved out as a single mbtiles file.

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You could try the GDAL utility, gdalbuildvrt, to create a mosaicked VRT as a raster input to TileMill. It seems to be a recommended approach.

  • ..hmm, I may have misunderstood your use case. apologies. but this might still be useful for someone who stumbles through with other intentions, so I'll leave the answer. – elrobis Jun 18 '14 at 16:19
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If you really need 100 of layers, use gdal_merge 1.tif 2.tif ... 100.tif -o single.tif to merge them into one.

Alternatively, you may use the fact project.mml is a plain-text JSON file. Open in in a text editor (notepad will do), find a block corresponding to one of your raster layers, and copy it required number of times, changing tiff file name.

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