One more thing, the points and shapefiles are guaranteed to be in locations
in the U.S.
On Sun, Mar 13, 2011 at 11:22 PM, Alessandro Ferrucci <
[email protected]> wrote:
> I am not sure (sorry I'm just learning these things).
>
> I just have a file with a set of Lat (-90 to 90) and Lon (-180 to 180),
> does that help figure that out?
>
> The only thing I know is that they are coming from the same source as my
> shapes.. the shapes use GCS_North_American_1983 CRS but the points don't
> have anything attached to them that would make notion of any ellipsoid.
>
>
> On Sun, Mar 13, 2011 at 10:53 PM, Michael Bedward <
> [email protected]> wrote:
>
>> Hello Alessandro,
>>
>> You don't mention whether or not your test points use the same
>> ellipsoid as your shapes. If you know that they are the same then
>> obviously no re-projection is necessary :)
>>
>> Michael
>>
>> On 14 March 2011 11:55, Alessandro Ferrucci
>> <[email protected]> wrote:
>> > Well my question is probably actually simpler than joining the
>> Geometries in
>> > the Shapefile, I already have that covered.
>> >
>> > Here's the problem.
>> >
>> > I have 1 Polygon geometry.
>> >
>> > I have 1 Point created from Lat/Lon.
>> >
>> > I want to test whether that Point falls within the polygon.
>> >
>> > Do I have to do any transformations ? Or can I run the test with the
>> > default Geometries created from the Shapefile and the lat/lon?
>> > Thank you,
>> > Alessandro
>> >
>> > On Sun, Mar 13, 2011 at 7:38 PM, Jody Garnett <[email protected]>
>> > wrote:
>> >>
>> >>
>> >>
>> http://docs.codehaus.org/display/GEOTDOC/12+Using+a+Loop+to+Join+FeatureCollections
>> >>
>> >> --
>> >> Jody Garnett
>> >>
>> >> On Monday, 14 March 2011 at 8:30 AM, Alessandro Ferrucci wrote:
>> >>
>> >> Hello,
>> >> I have a shapefile that I read using geotools and extract default
>> >> geometries for all features in shapefile.
>> >> all the geometries in the shapefile are polygons.
>> >> The shapefile is in the GCS_North_American_1983 CRS.
>> >>
>> >> Then I have a set of Lat Lon Points.
>> >>
>> >> I would like to take those Lat Lon points and check if they fall within
>> >> any of the feature geometries in the shapefile.
>> >>
>> >> anyone have example of this?
>> >> I'm pretty sure I have to convert Lat Lon to JTS geom Point object?
>> >>
>> >> Given that fact I've read the shapefile without doing any explicit
>> >> reprojection, do I have to reproject lat lon point to same CRS as is
>> >> declared in shapefile?
>> >>
>> >> thanks a lot
>> >>
>> >> --
>> >> Signed,
>> >> Alessandro Ferrucci
>> >>
>> >>
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>> >>
>> >
>> >
>> >
>> > --
>> > Signed,
>> > Alessandro Ferrucci
>> >
>> >
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>> > Colocation vs. Managed Hosting
>> > A question and answer guide to determining the best fit
>> > for your organization - today and in the future.
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>> >
>> >
>>
>
>
>
> --
> Signed,
> Alessandro Ferrucci
>
--
Signed,
Alessandro Ferrucci
------------------------------------------------------------------------------
Colocation vs. Managed Hosting
A question and answer guide to determining the best fit
for your organization - today and in the future.
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