[MAPSERVER-USERS] Using OGR to plot x,y data from MySQL with Attribute Data
fastturtle
beckjoh at KNOLOGY.NET
Fri May 30 20:33:43 PDT 2008
Hi!
I am new user to MapServer and I think I have a simple task.
I have a MySQL table called data1 with x,y (Lat, Long) data stored in two
fields and attribute data stored in another field called SPECIFIC. The
SPECIFIC field has three values that can be an option for a point (bad,
good, excellent).
I have successfully used OGR to plot my points using the following code,
however I cannot find an example of how to map the points based on the
attribute in the SPECIFIC fields. I really need to color
code the points by the attibute field. For example, I would color all
points with a bad rating as red, good as blue and excellent as green. How
can I alter my code in the map file to accomplish this task?
<OGRVRTDataSource>
<OGRVRTLayer name="data">
<SrcDataSource>MYSQL:test,user=user,password=password,port=3306,tables=data1</SrcDataSource>
<SrcSQL>SELECT * FROM data1</SrcSQL>
<GeometryType>wkbPoint</GeometryType>
<GeometryField encoding="PointFromColumns" x="Long" y="Lat"/>
</OGRVRTLayer>
</OGRVRTDataSource>
#
# Start of layer definitions
#
LAYER
NAME "MyAqui"
STATUS DEFAULT
TYPE POINT
CONNECTIONTYPE OGR
CONNECTION "aquidata.ovf"
DATA "data"
CLASS
NAME "MyClass"
STYLE
SYMBOL 'circle'
SIZE 15
COLOR 0 255 0
END
END
END
Thanks so much for any help in advance.
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