Changes between Mapnik 0.7.x and Mapnik 2.0

XML

Global Changes

Underscores --> Dashes

All properties that previously used underscores, ie '_' now use dashes ('-'). So, for example: 'allow_overlap' is now 'allow-overlap'

Mapnik 0.7.2 has compatibility with both syntaxes as of r2579
Mapnik 2.0 moved to only dashes in r2582
properties changed include:

['paths_from_xml','minimum_version','buffer_size','face_name,fonset_name','clear_label_cache','vertical_alignment','halo_fill','halo_radius','text_ratio','wrap_width','wrap_before','wrap_character','text_transform','line_spacing','label_position_tolerance','character_spacing','min_distance','minimum_distance','avoid_edges','allow_overlap','max_char_angle_delta','horizontal_alignment','justify_alignment','unlock_image','no_text']

CSSParameters --> Properties

This change affects the PolygonSymbolizer, LineSymbolizer, RasterSymbolizer, and BuildingSymbolizer only.

All CSSParameters have been removed, so for example, this:

    <PolygonSymbolizer>
        <CssParameter name="fill">yellow</CssParameter>
    </PolygonSymbolizer>

is now:

    <PolygonSymbolizer fill="yellow" />

Changes by Element

Map

component	old	new
Map	bgcolor	background-color
Map	did not exist	background-image

Symbolizers

component	old	new
TextSymbolizer	name='field'	name='[field]'
TextSymbolizer	text_convert	text-transform
TextSymbolizer	min_distance	minimum-distance
TextSymbolizer	did not exist	minimum-padding
PointSymbolizer / PolygonPatternSymbolizer / LinePatternSymbolizer	width	removed
PointSymbolizer / PolygonPatternSymbolizer / LinePatternSymbolizer	height	removed
PointSymbolizer / PolygonPatternSymbolizer / LinePatternSymbolizer	type	removed

Python API

component	old	new
mapnik	mapnik.Envelope	mapnik.Box2d
TextSymbolizer	set_displacement (function)	displacement (property)
TextSymbolizer	first argument was string	first argument now mapnik2.Expression('[field]')
ShieldSymbolizer	first argument was string	first argument now mapnik2.Expression('[field]')
ShieldSymbolizer	fifth argument was string	fifth argument now mapnik2.PathExpression('/path/to/[field].png')

C++ API

component	old	new
mapnik::Map	getWidth	width
mapnik::Map	getHeight	height
mapnik::Map	zoomToBox	zoom_to_box
mapnik::Map	setBackground	set_background
mapnik::Map	getCurrentExtent	get_current_extent
mapnik::Map	zoomToBox	zoom_to_box
mapnik::	mapnik::Layer	mapnik::layer
mapnik::	mapnik::Envelope	mapnik::box2d
mapnik::	mapnik::ImageData32	mapnik::image_data_32
mapnik::	mapnik::Image32	mapnik::image_32
mapnik::	mapnik::Image8	mapnik::image_8
mapnik::	mapnik::rule_type	mapnik::rule
mapnik::	mapnik::create_filter	mapnik::parse_expression

Planned/Proposed Before Release

Python API

Image.tostring -> Image.encode()
All remaining uses of 'envelope' -> 'box2d' (like ds.envelope())