Mapnik - The Missing Manual

This is the top level tag / object in a mapnik setup, it defines the map extent and global parameters / defaults.

TODO: contains …

Table 1. Map Attributes
Attribute	Type	Default	Description
`base`	string	none	name of a <FileSource> to find the input file in
`background-color`	color	transparent
`background-image`	file path	none
`background-image-comp-op`	SVG composition	none
`background-image-opacity`	float	1.0
`srs`	proj4 projection	+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs
`buffer-size`	float	0.0
`maximum-extent`	4xfloat
`font-directory`	directory path	none
`minimum-version`	version string	none
`paths-from-xml`	boolean	true	Whether relative paths are relative to the directory the XML file is in, or the current working directory.