Hi Ciccero-
We use visad.data.mcidas.BaseMapAdapter to read in McIDAS map files
and display them all the time. You can download the US file
file from ftp://www.ssec.wisc.edu/pub/visad/OUTLUSAM and then
load it into the VisAD SpreadSheet. That file has 857 sets with
53706 total points and you can compare the performance with
your dataset. The Java2D implementation in VisAD is a bit slower
than the 2D in Java 3D. If you can use Java3D, you'd get better
performance.
Don
"Ciccero A. W. Zandoná" wrote:
>
> Hi VisAD Community:
>
> I have already asked something like this before, but this time I will
> try to give more information about my problem:
>
> I'm tring to plot a contour map inside a 2Ddisplay from a text file
> (more specific a .MIF file from the MapInfo software). My class is
> reading the polylines that are in the file and then creating
> Gridded2DSets for each one, then puting then on a Gridded2DSet array and
> then into a UnionSet.
>
> Just like the rivers.java example.
>
> Bill told me I should check how many GriddedSets I was creating but the
> number is about 400 and there are about 25000 points. I don't think this
> is so much.
>
> When I change from Gridded to Irregular2DSet, the application becomes
> very faster, but the Irregular2DSet can only plot points.
>
> I'm using a IBM-PC 300Mhz and Ram:128Mb running Windows 98.
>
> Please, somebody must have used maps on VisAD, and this can't be the way
> it is. I'm doing something wrong.
>
> Maybe I should use a FlatField but I dont know how.
>
> An aswer is very important in the moment. It can determine if I can use
> VisAD or not.
>
> Thanks Already
>
> Cicero Augusto Wollmann Zandoná
> cicero@xxxxxxxxxxxxxx
--
*************************************************************
Don Murray UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx P.O. Box 3000
(303) 497-8628 Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
*************************************************************
