Thank you Jody that was helpful to know.
On Tue, Mar 15, 2011 at 12:34 AM, Jody Garnett wrote:
> The link I sent you earlier shows two loops.
>
> The outer loop goes through one feature collection (in this case the points
> you want to check). You may have to reproject them to match up with your
The link I sent you earlier shows two loops.
The outer loop goes through one feature collection (in this case the points you
want to check). You may have to reproject them to match up with your shapefile
as per the email with andrea.
The inner loop is done using a query against your shapefile.
By the way,
The shapefile that I am using for the Polygon geometry is a tiger line
shapefile.
Tiger lines use NAD83 CRS (4269).
i have found the following geotools page:
http://docs.codehaus.org/display/GEOTDOC/03+CoordinateReferenceSystem
Which says that conversion for WGS84 to cartesian is a
Andrea, thank you for the heads up about Axis order.
OK so I think I have the correct implementation of how to do this, but I
would like feedback from the community as to whether it's actually correct
and any flaws it may have (go easy on me please, I'm a true noobie).
Note:
Shapefile is in GCS_No
On Mon, Mar 14, 2011 at 1:49 PM, Alessandro Ferrucci
wrote:
> Thanks very much for the info, I have another question.
>
> I believe these points were captured with a GPS. Is the standard GPS
> Coordinate projection WGS84?
Yep. You still have to beware of axis order though, all shapefiles I
ever
Thanks very much for the info, I have another question.
I believe these points were captured with a GPS. Is the standard GPS
Coordinate projection WGS84?
On Mon, Mar 14, 2011 at 1:13 AM, Michael Bedward
wrote:
> Hi Alessandro,
>
> > I am not sure (sorry I'm just learning these things).
> >
> >
Hi Alessandro,
> 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?
No
> The only thing I know is that they are coming from the same source as my
> shapes.. the shapes use GCS_North_A
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 <
alessandroferru...@gmail.com> 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
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
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
wrote:
> Well my question is probably actually simple
by "transformations" I mean "reprojection"
On Sun, Mar 13, 2011 at 8:55 PM, Alessandro Ferrucci <
alessandroferru...@gmail.com> 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
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 transform
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 t
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
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