Re: [Geotools-gt2-users] GeometryFactory for a circle?

[Teodor B. <tb...@gm...>]

On Mon, 12 Mar 2007 15:18:54 +0200, Jeroen van Dijk <je...@se...>  
wrote:

> Maybe, a silly question, but I still haven't solved my previous posted
> problem. My problems start quite basic: How do I create a point
> Geometry?
>
> I guess I'm missing some basic knowledge of the API, but the tutorials
> do not help me here either.
>

Hi,

Geotools is using for geometry operations the JTS
API, developped by Vivid Solutions. You will have
to familiarize yourself with this API first.

As a start point you can check the following section
 from the GeoTools tutorials:

http://geotools.codehaus.org/Working+with+JTS+Geometries+from+DataStores

Best regards,
Teodor

>
> -----Original Message-----
> From: Ian Turton [mailto:ijt...@gm...]
> Sent: Friday, March 09, 2007 10:10 PM
> To: Jeroen van Dijk
> Cc: geo...@li...
> Subject: Re: [Geotools-gt2-users] GeometryFactory for a circle?
>
> On 3/9/07, Jeroen van Dijk <je...@se...> wrote:
>>
>
>>
>> I want select roads, from a shapefile, with a certain radius from a
> point,
>> thus lying in a circle.
>>
>>
>>
>> I found this link that shows how to select point with a polygon.
>>
>> http://www.nabble.com/filter-points-within-polygon-t2740648.html
>>
>>
>>
>> My only problem is now to create a Geometry that represents a circle.
> Like
>> in the post of
>
> What you really want is a DWithin filter which gives you everything
> within a distance of a geometry (in your case a point).
>
> Ian



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