Hello,
I just started using Geotools. I have two shapefiles generated via ArcGIS.
With GeoTools I am trying to find the areas of each along with determining if
they intersect and if so, the area of the intersecting polygon. Below is my
code snippet to getArea():
File file = new File(shapefile);
FileDataStore store = null;
try {
store = FileDataStoreFinder.getDataStore(file);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SimpleFeatureSource featureSource = null;
:
while (fShape.hasNext()) {
SimpleFeature ft = fShape.next();
Geometry geometry = (Geometry)ft.getDefaultGeometry();
double area= geometry.getArea();
:
}
I get totally different numbers when I try to lookup the area in acres from
ArcGIS. I tried printing the wkt and noticed the unit as "m" and assuming my
answer is in square meters here...
Also, the shapefiles are generated from ArcGIS without Mercator projection
(GCS_WGS_1984). There is an example in the userguide about doing a transform to
reproject to a standard CRS. Because I am using the standard projection, do I
still have to do the math transform? I am not sure what my targetCRS must be?
Any help is greatly appreciated!!
Thanks, Suma.
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