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Note in README about geometry and coordinate reference systems

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Kelsey Jordahl
2013-06-29 16:32:21 -04:00
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README.md
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@@ -3,10 +3,16 @@ Introduction
GeoPandas is a project to add support for geographic data to
[pandas](http://pandas.pydata.org) objects. It currently implements
`GeoSeries` and `GeoDataFrame` types which is are subclasses of `pandas.Series`
and `pandas.DataFrame` respectively. GeoPandas objects can act on
[shapely](http://toblerity.github.io/shapely) geometry objects and perform geometric
operations.
`GeoSeries` and `GeoDataFrame` types which is are subclasses of
`pandas.Series` and `pandas.DataFrame` respectively. GeoPandas
objects can act on [shapely](http://toblerity.github.io/shapely)
geometry objects and perform geometric operations.
GeoPandas geometry operations are cartesian. Objects are naive with
respect to coordinate systems, although the coordinate reference
system (crs) is stored on an instance when loading from a file. In
the future, enforcement of like coordinates for operations and
projection into other reference systems may be implemented.
Examples
--------