vss-devel/tilers-tools

A few tools to create raster tile sets from digital maps and convert between tile set formats

A collection of scripts for creating and handling a tile sets from digital raster maps. The scripts are based on GDAL tools.

NB: These scripts are not in active development anymore.

This version of the scripts requires GDAL python bindings version 2.xx

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tiler.py -- converts a GDAL-compatible map file (dataset) into a set of zoom-leveled tile directories (a pyramid). A few output pyramid structure/projections (profiles) are supported: compatible with Google Maps (native and TMS-compatible), Google Earth and generic. The script is relatively fast, especially when processing a paletted source in the "draft mode" or rendering a few datasets simultaneously. It is also less picky with dataset formats and projections. In particular, it can cope with maps crossing the 180° meridian.

tiler.py should read from standard GDAL datasets, but for some of them it uses map2gdal.py internally to implement more accurate metadata translation: BSB (.kap), Geo/Nos (.geo), Ozi (.map) and KML with ground overlays (raster images). GDAL itself has some support for these formats, but the script extracts somewhat more geographical data from these source formats. For example, for BSB charts it supports more data and projections than GDAL does natively (currently the only datum for BSB charts is WGS84), it also makes use of BSB's DTM northing/easting data.

tiles_merge.py -- merges a few separate tile sets created by tiler.py into a single one, so to cover a larger area and/or more zoom levels.

tiles_convert.py -- converts tile sets between a few tile set structure and tile image formats.

Some auxiliary scripts:

ozf_decoder.py -- converts ozf2 and ozfx3 files into tiff format. If locally installed GDAL tools do not have an ozf reader built in, this one would help. This script is also able to cope with some broken files.

hdr_pcx_merge.py -- assembles a set of HDR-PCX chart tiles into a single PNG file;

tilers-tools's Issues

Memory problem

I'm tried to build tiles with command tiler.py -z 0,19 maps/global_ortho.vrt -t maps/orthotiles but as result it eat all the memory.

What is the proper way of call tiler.py ?

Too many values to unpack

I used this script a long time ago and it worked then, but something must have changed, as I have python complaining now:

python tiler.py /Volumes/Three/Documents/Kartes/Vesturiskas/KdWR/KdwR_J11_Lyserort_1917_400dpi.map INFO:root: /Volumes/Three/Documents/Kartes/Vesturiskas/KdWR/KdwR_J11_Lyserort_1917_400dpi.map : Kdwr_j11_lyserort_1917_400dpi.jpg (/Volumes/Three/Documents/Kartes/Vesturiskas/KdWR/KdwR_J11_Lyserort_1917_400dpi.jpg) INFO:root: WGS 84, Latitude/Longitude INFO:root: /Volumes/Three/Documents/Kartes/Vesturiskas/KdWR/KdwR_J11_Lyserort_1917_400dpi.vrt -> /Volumes/Three/Documents/Kartes/Vesturiskas/KdWR/KdwR_J11_Lyserort_1917_400dpi.zyx Traceback (most recent call last): File "tiler.py", line 181, in <module> main(sys.argv) File "tiler.py", line 175, in main parallel_map(process_src, flatten(res)) File "/Users/normis/tilers-tools/tilers_tools/tiler_functions.py", line 97, in parallel_map return map(func, iterable) File "tiler.py", line 66, in process_src prm.generate_tiles() File "/Users/normis/tilers-tools/tilers_tools/tiler_backend.py", line 696, in generate_tiles self.create_target_dataset() File "/Users/normis/tilers-tools/tilers_tools/tiler_backend.py", line 524, in create_target_dataset base_ds = self.create_warped_vrt(top_left_coord, res, size) File "/Users/normis/tilers-tools/tilers_tools/tiler_backend.py", line 545, in create_warped_vrt ok, src_igeotr = gdal.InvGeoTransform(src_geotr) ValueError: too many values to unpack

python --version
Python 2.7.10