I am having something of nightmare setting this up. The documentation
(33-snapshot) says GDAL 3.2 or OLDER. Puzzling? Downloading GDAL3.2 from
gisinternals archive, I find gdalinfo –formats complaining about entrypoint for
sqlite3 in the gdal302.dll after I set up all the path and environment
variables (and OGRDataStoreFactory factory = new JniOGRDataStoreFactory();
dies with “java.lang.UnsatisfiedLinkError: C:\GDAL\gdal\java\gdalalljni.dll:
The specified procedure could not be found” ). Is the documentation correct
here?
From: Ian Turton <ijtur...@gmail.com>
Sent: Thursday, 16 May 2024 9:02 PM
To: Phil Scadden <p.scad...@gns.cri.nz>
Cc: geotools-gt2-users@lists.sourceforge.net
Subject: Re: [Geotools-gt2-users] getting from geometry in SimpleFeature to
ESRI geometry
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That's probably my fault :-) GeoJSON parsing has moved to gt-geojson-core which
along with the gt-geojson-store replaces the functionality in gt-geojson. The
plan is at some point in the future to remove gt-geoson but currently GeoServer
makes use of it (at least I think that was the problem) and I ran out of time
and energy,
With gt-geoson-core you should be able to do something like this:
GeometryFactory gf = new GeometryFactory();
SimpleFeatureType type = DataUtilities.createType("test",
"the_geom:Point:srid=4326");
SimpleFeatureBuilder builder = new SimpleFeatureBuilder(type);
builder.add(gf.createPoint(new Coordinate(1.23456789, 0.123456789)));
SimpleFeature feature = builder.buildFeature(null);
ByteArrayOutputStream out = new ByteArrayOutputStream();
GeoJSONWriter writer = new GeoJSONWriter(out);
writer.setMaxDecimals(6);
writer.write(feature);
Ian
On Thu, 16 May 2024 at 05:56, Phil Scadden
<p.scad...@gns.cri.nz<mailto:p.scad...@gns.cri.nz>> wrote:
Ultimately, what I am trying to do is read some features from a geopkg using
geotools, fidding with contents of the feature and then writing the Feature to
an ESRI FeatureServer using the REST API. Along the way, I have to get the
geotools geometry converted to an ESRI Geometry class.
The ESRI OGCGeometry
(https://esri.github.io/geometry-api-java<https://esri.github.io/geometry-api-java%20can>
can convert to ESRI geometry, but the fromGeoJson seems to be only method for
creating a OGCGeometry.
What I am struggling with is getting a GeoJSON string out of geotools. I added
gt-geojson module but can only see method for writing to file. Am I missing
something blindingly obvious here? The documentation doesn’t seem up to date –
pointing to methods that (eg GeoJSONWriter) that don’t exist (and pages 404 in
the Javadoc).
Using 31.0
Also looking at option of using a WKT route instead.
________________________________________________
Ngā mihi, Nā Phil Scadden (he/him)
Te Raraunga me te Tātaritanga Mokowā Aronuku (Geospatial Data and Analysis)
GNS Science Te Pῡ Ao
13A Alma St, Renwick, 7204
New Zealand Ph +64 27 3463185
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