bradbrowne/convert-mapinfo-tab-file-to-mapbox-vector-tiles.md

Last active January 29, 2017 05:05

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🎗Convert MapInfo TAB file to MapBox Vector Tiles by using OGR to create GeoJSON and then Tippecanoe to create MBTiles SQLite database containing MapBox Vector Tiles.

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convert-mapinfo-tab-file-to-mapbox-vector-tiles.md

Convert MapInfo TAB file to MapBox Vector Tiles

Install GDAL

brew tap osgeo/osgeo4mac

brew link autoconf automake

brew install gdal2

export PATH=$PATH:/usr/local/opt/gdal2/bin
export LDFLAGS=-L/usr/local/opt/gdal2/lib
export CPPFLAGS=-I/usr/local/opt/gdal2/include

Convert TAB file to GeoJSON

ogr2ogr -f GeoJSON STATE_ASSEMBLY_2013.json STATE_ASSEMBLY_2013.tab

Convert GeoJSON to MapBox Vector Tiles

brew install tippecanoe

tippecanoe -f -pp -o STATE_ASSEMBLY_2013.mbtiles STATE_ASSEMBLY_2013.json

The -pp argument is necessary to ensure that large polygons that cross tile boundaries are do not create vertical and horizontal visual artifacts.

View MapBox Vector Tiles

npm install -g mbview

export MAPBOX_ACCESS_TOKEN='pk.0000.1111' # a mapbox public token

mbview STATE_ASSEMBLY_2013.mbtiles

Author

bradbrowne commented Jan 29, 2017 •

edited

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Below is an example of the vertical and horizontal visual artifacts caused by large polygons that cross tile boundaries:

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