asciimap

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asciimap

asciimap builds an ASCII map from a geojson file. The ascii map can be used for astar project.

Usage

usage: asciimap [<flags>] <geojson-file>

Flags:
  -h, --help                Show context-sensitive help (also try --help-long and --help-man).
  -g, --grid-size=0.00001   Grid size
  -m, --map-file="map.txt"  Output map file

Args:
  <geojson-file>  Input geojson file name(required)

examples,

# generate ascii map from map.geojson using default grid-size and map-file.
$ asciimap map.geojson

# or, specify grid-size and ouput map-file.
$ asciimap map.geojson -g 0.00002 -m yourmap.txt

Create the GeoJSON

elements

there are two element types for an ascii map.

• bbox: the boundary box of a map.
• wall: the wall which a routing can't go through.

how to draw the geojson?

1. go to your favorite geojson editor such as geojson.io or tomscholz.
2. draw a polygon which will be used for bbox. Add "isbbox": true to properties. There should be only one bbox for an ascii map.
3. continue to draw polygons which will be used for walls.

see map.geojson for an example. I drew it using tomscholz geojson editor agaist satellite. map.txt is its ascii map as the result.