Re: [Geotools-gt2-users] gui.swing widgets demo (WAS: Displaying icon on map in JMapPane, example)

[Michael B. <mic...@gm...>]

The demo builds but when I run it with
org.geotools.demo.widgets.StreamWidgetsDemo as the main class I get
this...

java.lang.NullPointerException
	at org.geotools.gui.swing.datachooser.JPostGISDataPanel.<init>(JPostGISDataPanel.java:74)
	at org.geotools.demo.widgets.StreamWidgetsDemo$4.actionPerformed(StreamWidgetsDemo.java:209)

As far as I can see all that's happening at that point in the code is
some simple form initialization with default parameter values.  I'm
sure I must be missing something very obvious.  Any ideas ?

cheers
Michael

2008/8/5 Michael Bedward <mic...@gm...>:
> Excellent - thanks Johann.
>
> I had searched the code with grep jstreamnavmap and hadn't thought to
> grep for a subclass (duh !)
>
> cheers
> Michael
>
> 2008/8/4 johann wrote:
>>
>> You can find a demo on svn :
>> http://svn.geotools.org/trunk/demo/example/src/main/java/org/geotools/demo/widgets/StreamWidgetsDemo.java
>>
>> For the use of decorations I dont have any but it's  not a hard thing.
>> A decoration is basicly a swing component who will be added on top of the
>> map, a bit like a layeredpane.
>> The only thing you have to do is override the paint method of your
>> decoration and paint what you wish.
>>
>> Here is snapshot of what did anaxa :
>> It's a decoration to show up more informations about some plots.
>> http://img218.imageshack.us/img218/1112/infossiteszn5.jpg
>>
>> The trick is to listen to the map widget and use the methods toMapCoord and
>> toComponentCoord to know exactly where you must paint on the decoration.
>>
>> I hope this helps.
>>
>