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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Nihat,
The code below looks good. You can add the display to a user interface with:
JFrame f = new JFrame("My Frame");
JPanel p = new JPanel();
p.setLayout(new BorderLayout());
f.setContentPane(p);
p.add(display.getComponent(), BorderLayout.CENTER);
f.show();
Or some similar block of code.
There is no need to call getImage just to blit the image to a canvas on
screen. However, if you want to save a JPEG of the display to disk or
some such, then getImage is useful. However, you should not need to call
getImage for every frame -- just when the user clicks a "Save" button or
some such.
Also, if you are taking multiple snapshots, you only need build the display and maps once. Then you can just call data_ref.setData(newField) with your new data, and display.getImage() to get a new snapshot, each time.
-Curtis ncubukcu wrote:
Thanks CurtisI think I got it working now. You are right that my com.app.lt.CreateImage throws me an image using getImage(). I don't know any other way of creating an image in visad. Is there a shorter way to add scalar maps to an image other than what I use below? .. contMap = new ScalarMap( field, Display.IsoContour ); colMap = new ScalarMap( longitude, Display.XAxis ); rowMap = new ScalarMap( latitude, Display.YAxis ); pixMap = new ScalarMap( field, Display.RGB ); DisplayImplJ2D display = new DisplayImplJ2D(" ", 700, 500);GraphicsModeControl dispGMC = (GraphicsModeControl) display.getGraphicsModeControl();dispGMC.setScaleEnable(true); // Add maps to display display.addMap( colMap ); display.addMap( rowMap ); display.addMap( pixMap ); display.addMap( contMap ); // Create a data reference and set the FlatField as our data DataReferenceImpl data_ref = new DataReferenceImpl("data_ref"); data_ref.setData( mapField ); // Add reference to display display.addReference( data_ref ); return display.getImage(); Thanks again for your help nihat
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