Hi All,
I am working on an application that plots points from a GPS and has many
other features.
My issue is that the points being plotted on the chart seems to be off by a
fairly decent amount. I would say somewhere in the order of 20 miles south
or so from the actual GPS coordinates. I do notice that I am getting a
warning displayed during reading of the TIFF image for the chart. The
warning is: "WARNING: Coordinate Reference is not available". Is this
warning the reason my plotted points are off from where they should be
displayed? Or would that be because of some other reason? I don't see
anywhere to define the coordinate reference system. I have poured over all
of your tutorials to see if I am missing something. In this case, I am
reading in 13001_3.tif and I also have a file named 13001_3.tfw in the same
directory where I am reading from. Below is the code I have for reading the
*.tif file:
map = new MapContent();
File rasterFile = new File(geoTiffFilesDir + "/" + selectedMapFile);
String rasterFilePath = rasterFile.getPath();
rasterFilePath = rasterFilePath.replace('\\', '/');
AbstractGridFormat format = GridFormatFinder.findFormat( rasterFile );
AbstractGridCoverage2DReader reader = format.getReader(rasterFile);
StyleBuilder styleBuilder = new StyleBuilder();
RasterSymbolizer rastSymbolizer = styleBuilder.createRasterSymbolizer();
Style style = styleBuilder.createStyle(rastSymbolizer);
GridReaderLayer rasterLayer = new GridReaderLayer(reader, style);
map.layers().add(layerIndex, rasterLayer);
I appreciate any help!!
Thanks,
Dave
--------------------------------------------
David Purdy
Owner/President
JJM Technologies Corporation
Email: [email protected]
Phone: 508.972.1266
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