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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.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.
Hi, I assume Timo is having the same problem I have. If I change the aspect ratio, axis labels, wind vectors, and other Shapes are "stretched" out of shape. This is not acceptable behavior so I am unfortunately stuck with using a square box. I need to have the ability to set the aspect ratio without the result being a square stretched to fit. How hard would it be to implement an aspect ratio that is independent of the projection matrix? (Am I correct in assuming that the box is defined by -1 to 1 and the aspect is manipulated by the transformation matrix?) I envision a box defined by -1 to 1 along one dimension and, say, -2 to 2 in another to provide the desired aspect ratio (2 to 1 in this case). I'm not familiar with the transformation math enough to know if this would work. Doug Curtis Rueden wrote: > > Hi Timo, > > If you are looking for a one-to-one correspondence between data samples > and onscreen pixels, that is a bit tricky. However, fitting the data > aspect to the shape of the display window is not as hard. > > You are not the first person to request such a feature in VisAD, so I > added a method setAutoAspect(boolean auto) to DisplayImplJ2D. If you > call setAutoAspect(true) on a DisplayImplJ2D object, the aspect will > automatically adjust to fit the window every time the display panel > changes size. > > The updated classes should be available on the FTP server within a few > days. In the meantime, you can find the two relevant files at > http://palm.ssec.wisc.edu/DisplayImplJ2D.java > http://palm.ssec.wisc.edu/VisADCanvasJ2D.java > Just put these two files in visad/java2d and recompile. > > Curtis > > At 06:42 11/14/00, you wrote: > >Hi, > > > >I have (IMO) a very simple problem with the axis scaling in 2D-Displays. > >Unfortunatly the manual couldn't help me much with it. The problem: > > > >How to set the aspect of an DisplayImpl2JD such that it covers an > >rectangular area on the screen without strechting all pixels (which it > >does if use ProjectionControl.setAspect())? At the moment the plot is > >always a square even if I change the window size to a rectangle (the > >Display automatically adjusts itself to the minimum of the width and > >height). The perfect behaviour would be an automatic fitting to the > >window size by covering the full available area. > >Anybody out there who knows about that? > > > >Regards, > >Timo > >-- > >__.__________ > > |lmo |homas -- *----------------------------------------------------------------------* | Doug Lindholm, Software Engineer | E-mail: lind@xxxxxxxx | | Research Applications Program | Phone: 303-497-8374 | | National Center for Atmospheric Research | | | P.O. Box 3000 | There's no place | | Boulder, Colorado 80307-3000 | like $HOME | *----------------------------------------------------------------------*
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