Re: [Geotools-gt2-users] [Geotools-devel] pixel to coordinate conversion

[alwynn <alw...@ep...>]

Michael, thanks for your quick reply and moving my question to this forum.

Is this implementation of JMapPane  applicable if I'm using a 'country' map
and not a world map?
I did have a look at the code in trunk and I can't see no reason why not. 

To get the latest jmappane library, does that mean I need to update my
pom.xml to reference the gt-mappane 2.6-SNAPSHOT or do I download the source
and recompile it [hope not]. 

Currently I'm using 2.5-RC1 which obviously does have the newest jmappane
code. I'm new to maven...might be a stupid question though. 

It took me a while to rid some oracle nosuchmethoderrors after messing
around with my pom.xml library versions so I'm just a bit cautious here :).
Most of my library dependancies are gt xxx 2.5.2

Thank you
alwynn


mbedward wrote:
> 
> Hi Alwynn,
> 
> I'm moving your question across to the users list.
> 
> Take a look at the new JMapPane code on trunk.  Specifically the
> JMapPaneMouseEvent class...
> http://svn.osgeo.org/geotools/trunk/modules/unsupported/mappane/src/main/java/org/geotools/gui/swing/event/JMapPaneMouseEvent.java
> 
> ...which gets an AffineTransform from the
> JMapPane.getScreenToWorldTransform() method to do the coord
> conversion.
> http://svn.osgeo.org/geotools/trunk/modules/unsupported/mappane/src/main/java/org/geotools/gui/swing/JMapPane.java
> 
> Hope this helps,
> Michael
> 
> 2009/3/10 alwynn <alw...@ep...>:
>>
>> Hi
>>
>> I'm building and displaying a map in a JMapPane from data retreived from
>> oracle spatial(country boundaries).
>> The map contains a feature collection (layer) of coordinates [points].
>> The
>> feature collection was created not from spatial data but a plain jdbc
>> query
>> to oracle to retrieve the long/lats and then adding it to a Feature
>> Collection. This works and looks very cool.
>>
>> I've added a mouse listener on the jmappane that should do the following
>> on
>> click:
>> determine which feature was clicked. Does anyone know how to convert the
>> x,y
>> point clicked relative to frame (The result of MouseEvent e ....
>> e.getPoint)
>> to a coordinate contained in my Feature collection?
>> Any ideas?
>>
>> Thank you
>> --
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>>
>>
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