Mapnik simplistic testcase starter

README.md

Test case for Bug #1

Depends

• Mapnik >= 2.2 and the python bindings

How to replicate

To replicate the bug run:

python render.py

Then look at the bug.png and see how ____ is rendered wrong. Instead it should be ________.

bug.png

map.xml

<Map
    background-color="#eee"
    srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">

    <Style name="point">
        <Rule>
            <MarkersSymbolizer />
        </Rule>
    </Style>

    <Style name="frame">
        <Rule>
            <PolygonSymbolizer />
        </Rule>
    </Style>

    <!-- 
      frame is a layer with a single polygon that is used to ensure that m.zoom_all() will zoom the
      map to a reasonable bounding extent to make the test easy to view with tools like nik2img.py
      (which calls m.zoom_all() by default). Another approach in >= Mapnik 2.3.x is to just sent a
      manual `extent` for the CSV datasource.
    -->

    <Layer name="frame" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
        <StyleName>frame</StyleName>
        <Datasource>
            <Parameter name="type">csv</Parameter>
            <Parameter name="inline">
wkt|name
Polygon((-180.0 -85.0, -180.0 85.0, 180.0 85.0, 180.0 -85.0, -180.0 -85.0))|bounds
            </Parameter>
        </Datasource>
    </Layer>

    <!-- 
      "bug" is a layer that should provide sample data that triggers the bug in question. It is
      listed after the "frame" layer so that it renders on top and is visible.
    -->

    <Layer name="bug" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
        <StyleName>point</StyleName>
        <Datasource>
            <Parameter name="type">csv</Parameter>
            <Parameter name="inline">
id|name|wkt
1|null island|Point(0 0)
            </Parameter>
        </Datasource>
    </Layer>

</Map>

render.py

import mapnik
m = mapnik.Map(256,256)
mapnik.load_map(m,'map.xml')
m.zoom_all()
im = mapnik.Image(m.width,m.height)
mapnik.render(m,im)
im.save('bug.png')

How to upload an image to a gist?

@Andrey_VI: git clone the gist and then add the image via git.

Thank you, Dane!