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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
w = display's width
h = display's height
ProjectionControl pc = display.getProjectionControl();
double ax, ay;
if( w > h ) {
ax = (float)w / h;
ay = 1;
} else {
ay = (float)h / w;
ax = 1;
}
pc.setAspect( new double[] { ax * 0.5/0.33, ay * 0.5/0.33 } );
then the 'box' (display real type values -1 -> 1 ) will fill the display
component entirely, at least in the simple cases I have tested. There
may well be data-related times when this does not hold.
It appears to work since the idea is to get the final AT scaling and translation both to 0.5 of the width (and height). The translation is already set to 0.5, we just need the scale factor from above, which when concatted to the 0.33 scaling AT in the canvas, results in a scale of 0.5 * width. Then x = -1 in visad coords maps to pixel 0, and 1 maps to display width, so the box fills the display (??)
I thought this worth sharing, as I have seen requests for it in the past on the mailing list
Stuart
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