On 21 May 2010 16:32, ahmet temiz wrote:
>
> In order to integrate geotools in java application, don't we need its
> "jar" file ?
>
> I couldn't find it ?
Please have a look at one of our introductory workbooks...
For Eclipse users...
http://snapshots.dist.codehaus.org/geotools/workshop/GeoToolsE
hello
In order to integrate geotools in java application, don't we need its
"jar" file ?
I couldn't find it ?
regards
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Hi Amador
> For this:
> Point screenPoint = evt.getPoint();
> Filter mFilter = mFilterFactory.intersects(
> mFilterFactory.property(mGeomName),
> mFilterFactory.literal(screenPoint));
>
No, that won't work. The first problem is that the Poin
Hello Duane,
> JTS is a 2.5D Cartesian geometry computation library. It is not capable of
> understanding
> that 180 lies between -170 and 170.
Perhaps just normalize the incoming coordinates to [0, 360) then you
can test them against your polygon (with its vertices normalized in
the same manner
I'm aware of the 4 color algorithm although I didn't really know about the 5
color version. And I'm dealing with 20k shapes ... so using different colors
is obviously out of consideration. I have been assigning random colors from
a pool of colors but was wondering if geotools has sth that I can ta
Hi Jon, Linda,
Yep, it sounds like you're both on the road to grid coverage happiness now :)
Linda: for any desired cell width you can easily calculate the bits
you need for the new GridGeometry2D object to pass to the Resample
op...
double cellSize = ...
GridGeometry2D gg = cov.getGridGeometry
I'm trying to get GPX (using gt-gpx) support into udig. I've managed
to get the import wizard to work but I now need to translate between
gpxCrs (a CompoundCRS of WGS84, height and temporal CRSs) and my
target CRS (at the moment im testing it with the default WGS84 (DD).
The exception thrown states
Hello,
> I'd like to fill the polygons with multiple colors such that adjacent
> polygons don't have the same color. How can I do this ?
Easiest answer - if number of polygons is small make them all
different colors :)
General answer...
Theoretically you only need four colors to achieve what you
Hi again Sergey,
If you are only going to be using your filter programmatically (rather
than in SLD files) you can cheat a bit and set the string that you are
looking for in the filter function constructor like this...
public class Foo extends FunctionExpressionImpl {
private final String typ
I'd like to fill the polygons with multiple colors such that adjacent
polygons don't have the same color. How can I do this ?
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Hi Sergey,
Just to add to Andrea's reply, you'll find it easiest to extend
org.geotools.filter.FunctionExpressionImpl to write your filter
function.
Michael
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On 21 May 2010 00:54, LSA wrote:
> There is not ability to enter expressions without attributes. For example,
> evaluate the following expression 1=1 - you will get exception, that first 1
> is unexpected. However, it is quite possible situation, for example, how can
> you evaluate the following: I
This is something to get you started:
http://www.geotools.org/examples/crslab.html
Simone.
---
Ing. Simone Giannecchini
GeoSolutions S.A.S.
Founder - Software Engineer
Via Carignoni 51
55041 Camaiore (LU)
Italy
phone: +39 0584983027
fax:
Hello,
I am trying to determine if a point on the earth is within a polygon and I am
having some difficulty. I am doing this by using
Eclipse and gt-jts-wrapper-2.6.4.jar. The coordinate system is WGS84.
The code in question is the following :
Hints hints = new Hints(Hints.CRS, Def
hello
I am a new participant.
I will appreciate if you let me know how I can manage projection
transformation in java application.
specifically utm to geographic conversion.
regards
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I suppose you just find the ratio between the current cell size and the cell
size you require, then use that for the scale factor. Or something like that
anyway...
Jon
On 20 May 2010 17:30, Adnila wrote:
>
> hey guys,
>
> @Michael: thanks for the code. It was very helpful. You're the best ;-)
>
hey guys,
@Michael: thanks for the code. It was very helpful. You're the best ;-)
sry, when I caused some confusions. But I meant the cell width with
resolution. This was not correct, sry. I need to set the cell width fixed.
The user can chose the cell width in meters and than the new grid cover
LSA ha scritto:
> Hi once again!
>
> I would like to have my own custom filter, which filters every feature
> by using its very custom /evaluate/ method.
The filter api cannot be extended, the set of filters is closed.
What you can do is to create your own filter function instead,
and then check
Hi once again!
I would like to have my own custom filter, which filters every feature
by using its very custom /evaluate/ method.
I was trying to implement my own filter by extending the
AbstractFilterImpl, but I ran into the following:
If I don`t override accept(FilterVisitor
visitor, Objec
I've played around with the Filters some more (as was suggested), and I still
can't seem to find what I'm looking for. If you'll please excuse my use of a
list, I think it will be helpful to better outline my problem.
Problem:
I start out with a polygon defined as a closed line string of longitu
Hi everyone!
I think CQL implementation in geotools has bug, or very annoying feature:
There is not ability to enter expressions without attributes. For
example, evaluate the following expression 1=1 - you will get exception,
that first 1 is unexpected. However, it is quite possible situation,
I would try it in the following manner
1) Take your points and sort them primary by x value, secondary by y
value, eliminate duplicates
2) Create a linestring from your points, step 1 should assure a valid geometry
3) intersect the linestring with the mulitpolygon, the result can be
an empty g
Hi list,
I have a question that could be more related to a jts-user list but hopefully
someone can help me.
I have two set of Geometry objects (a set of Points and a set of Multipolygons)
and I have to check which of them intersect to get the mapping of
Polygon->Points.
geometryObjectA.inter
Hi Michael,
This certainly answers my question, now I can do things the GeoTools way!
Again, if you want a fixed resolution (say 800 x 600), since we're using
scaling factors then the following should do the trick:
// create new GridGeometry with half as many cells
GridEnvelope2D newGridEnv = ne
Hi Andrea,
here is an example from both. The differences seem to be names (of every
single parameter - PROJCS, GEOGCS, SPHEROID, etc), including
captialization and parameter naems.
The values seem to be identical.
Hope this helps,
Martin
Geotools:
PROJCS["ETRS89 / ETRS-LAEA",
GEOGCS["ETRS89",
DA
Well, I do it, but It don't work, I'm very stuck in this, because I'm new in
GIS. I need to select just a polygon and not a line, because the system
which I want to make is a "Building Locator" (Or something else, I hope
you'll understand what I mean), I send you my full prototype.
I replace this:
Martin Tomko ha scritto:
> Hi Andrea,
> I just had the need to export some featurecollesction and check for the
> correctness of results in ArcGis with some other data, as a quick
> visualization workaround - I don't do visualization in GT...(I guess I
> should use uDig for this, eh?). Anyway, t
Hi Andrea,
I just had the need to export some featurecollesction and check for the
correctness of results in ArcGis with some other data, as a quick
visualization workaround - I don't do visualization in GT...(I guess I
should use uDig for this, eh?). Anyway, this has resulted in an error
from
Martin Tomko ha scritto:
> Dear all,
> this has been discussed before, in the times when Geotidy was planned to
> become Geotools 3...
That was never planned, it was just the wish of the people that
eventually forked GeoTools into GeoToolkit. But has never been an
official project position.
>
Hi Linda, Jon,
Sorry - didn't realize you were still stuck ! I hadn't been following
the last few messages on this thread.
If what you want to do is retain the coverage's world bounds but alter
its resolution (ie. its grid bounds) you can do as in the code snippet
below. Note that I'm not reproj
Dear all,
this has been discussed before, in the times when Geotidy was planned to
become Geotools 3... There has been a need to format the prj generated
for shapefiles to be compatible with ESRI soft. Has this been somehow
resolved?
I have a problem specifically with the EPSG:3035 which looks
Hi,
I have a SLD file like that, but when I parse the file, it doesn't display
the text symbolizer.
http://www.opengis.net/sld";
xmlns:sld="http://www.opengis.net/sld";
xmlns:ogc="http://www.opengis.net/ogc";
xmlns:gml="http://www.opengis.net/gml";>
Default Styler
Are you saying you want to make an image a given resolution, as in 800 x
600? For this I use the following method:
public static RenderedImage rescale(RenderedImage image, int width,
int height) {
float xScale = (float) width / (float) image.getWidth();
float yScale = (float) height / (float) im
hey guys,
I still do not get it. can anybody help me please?
here is my original post:
Hey all,
now I am trying to use a fixed resolution for a rescaling of a
gridcoverage2D.
The user should be able to choose a resolution from a GUI.
What am I supposed to do if I want the rescaling with a fixed
Hi all,
we are doing a project in Finnish meteorological institute and trying
to use Geotools library ( xml and wms extensions ) for our benefit.
At the moment we are parsing WMS getCapabilities responses with
Geotools-library, but can't seem to be able to make the parser to use
local schemas, ra
hi jody
thx for your answer
and you are right
our server really returns a wrong capabilities document
say our server strips off the port number
i have had a serious word with our admin :)
so geotools is still an awesome library
and jody is the greatest :)
thanks again
claus
. -Urspr
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