[Kst] HPIC update

[Brisset, Nicolas]

> We need to think about how data sources present matrixes.  
> vectors can be read by index, or for special data sources, by 
> time.  How about matrixes?
> 
> I think that the new/edit matrix dialog gets an option like 
> the vector dialog has which allows the user to read a matrix 
> from a data source.  It will have entries for xmin, xmax, 
> ymin, ymax with some feedback in the dialog which tells the 
> user what the datasource has to offer (minx, maxx, nx, etc).  
> This would be generic to all matrix reading.
Just for your information, adding matrix support to CDF or netCDF should
be fairly easy. These formats have native support for matrices (even
with dimensions > 2). I have not looked at how they
store/represent/access data, though...

Nicolas