Re: a few late-night questions

• To: visad-list@xxxxxxxxxxxxx
• Subject: Re: a few late-night questions
• From: "William L. Hibbard" <WHIBBARD@xxxxxxxxxxxxx>
• Date: Fri, 02 Apr 1999 05:48 CST

Hi Doug,
 
> 1) Any suggestions on why I am getting missing data from my resamplings?
> The original data seem to be OK but the grid is not particularly
> regular. (This is some MM5 output.) I defined the original domain as a
> Gridded3DSet by giving it a list of coordinates that aren't necessarily
> monotonically increasing.  This field displays fine, but with 60*60*31
> wind vectors, the scene is a bit crowded (and slow to rotate). My
> resampling domain is a simple Linear3DSet (20x20x10). The result is
> mostly OK but there are enough holes (i.e. missing data) that attempts
> to do IsoContours are not pretty. As expected, NEAREST_NEIGHBOR doesn't
> leave as many holes as WEIGHTED_AVERAGE, but there are still plenty.
 
I'd better take a look at your program - might be a bug in
VisAD.  Could you please put your code and data in a jar
file (or compressed tar file) and ftp it to me as follows:
 
  ftp demedici.ssec.wisc.edu
  login: anonymous
  password: email@address
  ftp> cd pub/incoming
  ftp> bin
  ftp> filename.jar
  ftp> quit
 
Then send me an email with the name of the jar file.
 
> 2) Can anything be done about the clipping when you zoom in too close?
 
Clipping control is on my to do list.
 
> 3) Can one change the aspect ratio of a 2D plot instead of getting a
> square?
 
I just added a method setAspect(double[] aspects) to
ProjectionControl to allow you to do this.  The aspects
array has length 2 for DisplayImplJ2D and length 3 for
DisplayImplJ3D.  It is now called in Test57.java and
Test58.java in visad/examples.
 
> 4) I got axis labels with setScaleEnable. How can I control the color,
> font size...?
 
You will get scales for any RealType mapped to XAxis, YAxis
or ZAxis.  You control the colors of these via the setScaleColor
method of ScalarMap.  For example:
 
  ScalarMap map2temp = new ScalarMap(temp, Display.XAxis);
  display.addMap(map2temp);
  map2temp.setScaleColor(new float[] {red, green, blue});
 
Sorry to say there is currently no control over font size
for axis scale labels.
 
Cheers,
Bill
 
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
whibbard@xxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html