[Geotools-gt2-users] Loading image with world file

[Leandro B. <lea...@ad...>]

Hi guys,

I'm new to geotools so excuse me if this is a simple question.

I want to load a jpeg o gif image with a world file as a layer in a map 
context, then load it in the map pane (StyledMapPane) an be able to 
"draw" over it. The drawing part works perfectly, it stores the features 
the user draws in a MySQLDataStore.

The problem, I belive, is the image CS. When the mapPane loads it always 
shows the scale in 12.000Km and not the correct scale of the image.

I tried set the area of interest from a GridCoverage this way:
map.setAreaOfInterest(gc.getEnvelope(), gc.getCoordinateReferenceSystem());

but the first parameter is not the same Envelope class and when I cast 
it I get a ClassCastException

this is how I load the image  (I got it from USGS)...

WorldImageReader wir = new WorldImageReader(new 
File("/home/leandro/Desktop/compos.jpg"));
GridCoverage gc = wir.read(null);

anyone knows how to solve this?

thanks guys!

Leandro

pd: sorry if my english is not so good.