I do not believe that this is possible.
If you want to draw lines you have to create a data source the returns
lines not points.
The problem is that mapserver draws features and each point is a
feature. It does not have a mechanism that can read a data source and
aggregate the point features into a single line feature.
I have seen posts on the PostGIS list for SQL that can do this. You
might ask on the GDAL list if there is a way to do this. Or if you can
use PostGIS, then you can find the SQL in the archives or ask again.
-Steve W
On 12/16/2010 1:00 AM, Ian Walberg wrote:
Hello list,
Using an OGR connection to an sqlite data file we can get point and
labels to draw successfully.
However when we try and draw a line using the point data we do not get
anything drawn.
Layer details below.
Thanks
Ian
LAYER
NAME ogr_points
STATUS DEFAULT
TYPE point
CONNECTIONTYPE OGR
CONNECTION "points.sqlite"
DATA "DataPoints"
CLASS
NAME "From OGR"
COLOR 255 0 0
STYLE
SYMBOL 'City'
SIZE 5
COLOR 0 255 255
END
LABEL
COLOR 255 255 255
OUTLINECOLOR 0 0 0
TYPE truetype
FONT Unicode
SIZE 16
ANTIALIAS TRUE
POSITION AUTO
END # end of label
END
END
LAYER
NAME ogr_line
STATUS OFF
TYPE line
CONNECTIONTYPE OGR
CONNECTION "points.sqlite"
DATA "DataPoints"
CLASS
STYLE
COLOR 255 22 22
WIDTH 2
END
END
END
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