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README.md

Magnacarto Examples

Simple Worldmap

Download the following zip file, unpack and move the ne_10m_admin_0_countries directory into this directory (examples).

world.mml

world.mml defines the datasources for all layers. In this case it only contains a single world layer that uses the NaturalEarth shapefile.

world.mss

world.mss contains the actual map styling.

Mapnik

Create a Mapnik XML:

magnacarto -mml world.mml  > world.xml

Render map with nik2img:

nik2img.py -d 1000 1000 world.xml mapnik.png

MapServer

Create MapServer map file:

magnacarto -mml world.mml -builder mapserver > world.map

Render map with shp2img:

shp2img -m world.map -o mapserver.png -s 1000 1000

Use the -ms-no-map-block option to create a mapfile without a MAP block. The output will only contain LAYERS and SYMBOLS, useful for INCLUDEing into map files with custom metadata, image formats, etc.:

magnacarto -mml world.mml -builder mapserver -ms-no-map-block > layers.map

OSM Roads

Download the following zip file and unpack everything into docs/examples/hamburg_germany.

roads.mml

roads.mml defines a single layer based on the roads shapefile.

roads.mss

Styling that demonstrates a few CartoCSS features:

  • variables to define road widths
  • arithmetics to calculate the width of outlines (@motorway_width + @outline_width)
  • attachments to render a layer multiple times (::outline first, then ::inline)
  • work with zoom levels to define scale dependent styles
  • define default values (line-width for all roads from zoom level 14)

Mapnik

Create a Mapnik XML:

magnacarto -mml roads.mml > roads.xml

Render map with nik2img:

nik2img.py -d 500 500 -s 3857 -e 1120261 7086018 1122707 7088464 roads.xml mapnik.png

MapServer

Create MapServer map file:

magnacarto -mml roads.mml -builder mapserver > roads.map

Render map with shp2img:

shp2img -m roads.map -o mapserver.png -s 500 500  -e 1120261 7086018 1122707 7088464

Use the -ms-no-map-block option to create a mapfile without a MAP block. The output will only contain LAYERS and SYMBOLS, useful for INCLUDEing into map files with custom metadata, image formats, etc.:

magnacarto -mml roads.mml -builder mapserver -ms-no-map-block > layers.map