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formatting

springmeyer 2012-01-09 09:22:32 -08:00
parent ccd3aef2f6
commit 60d8ed6544
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GettingStartedInXML.md

@ -10,7 +10,7 @@ Make sure you have mapnik installed and you've successfully run through [Getting
Two examples will be shown: Two examples will be shown:
1) An XML configuration that exactly matches the map output from the pure python example in [Getting Started Python Tutorial](GettingStartedInPython). 1) An XML stylesheet that exactly matches the map output from the pure python example in [Getting Started Python Tutorial](GettingStartedInPython).
2) An XML stylesheet that uses a world borders dataset with population attributes to create a chloropleth map (aka thematic) by population size. 2) An XML stylesheet that uses a world borders dataset with population attributes to create a chloropleth map (aka thematic) by population size.
@ -18,18 +18,18 @@ Two examples will be shown:
### Hello World XML ### Hello World XML
First you will still need a python script that sets the basic map parameters and points to the XML config file: First you will need a python script that sets the basic map parameters and points to the XML stylesheet
```python ```python
#!/usr/bin/env python #!/usr/bin/env python
import mapnik import mapnik
stylesheet = 'world_style.xml' stylesheet = 'world_style.xml'
image = 'world_style.png' image = 'world_style.png'
m = mapnik.Map(600, 300) m = mapnik.Map(600, 300)
mapnik.load_map(m, stylesheet) mapnik.load_map(m, stylesheet)
m.zoom_all() m.zoom_all()
mapnik.render_to_file(m, image) mapnik.render_to_file(m, image)
``` ```
* Copy the above code and save to a file called `world_map.py` * Copy the above code and save to a file called `world_map.py`
@ -37,38 +37,36 @@ First you will still need a python script that sets the basic map parameters and
Next you will need to create the `world_style.xml` file referenced in the `world_map.py` script. Next you will need to create the `world_style.xml` file referenced in the `world_map.py` script.
```xml ```xml
<Map bgcolor="steelblue" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"> <Map bgcolor="steelblue" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
<Style name="My Style"> <Style name="My Style">
<Rule> <Rule>
<PolygonSymbolizer> <PolygonSymbolizer>
<CssParameter name="fill">#f2eff9</CssParameter> <CssParameter name="fill">#f2eff9</CssParameter>
</PolygonSymbolizer> </PolygonSymbolizer>
<LineSymbolizer> <LineSymbolizer>
<CssParameter name="stroke">rgb(50%,50%,50%)</CssParameter> <CssParameter name="stroke">rgb(50%,50%,50%)</CssParameter>
<CssParameter name="stroke-width">0.1</CssParameter> <CssParameter name="stroke-width">0.1</CssParameter>
</LineSymbolizer> </LineSymbolizer>
</Rule> </Rule>
</Style> </Style>
<Layer name="world" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"> <Layer name="world" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
<StyleName>My Style</StyleName> <StyleName>My Style</StyleName>
<Datasource> <Datasource>
<Parameter name="type">shape</Parameter> <Parameter name="type">shape</Parameter>
<Parameter name="file">world_borders.shp</Parameter> <Parameter name="file">world_borders.shp</Parameter>
</Datasource> </Datasource>
</Layer> </Layer>
</Map> </Map>
``` ```
* Copy this XML and save to a file called `world_style.xml` beside the `world_map.py` script. * Copy this XML and save to a file called `world_style.xml` beside the `world_map.py` script.
Now run that script with this command: Now run that script:
```sh
python world_map.py python world_map.py
```
* It should output a png graphic in the same folder that matches the Getting Started Tutorial. * It should output a png graphic in the same folder that matches the Getting Started Tutorial.