Hi John:
Look in visad/data/text/README.text. I recently released a VisAD file adapter
that does exactly this...and more. The file types are automatically recognized
if they have a .txt, .csv, .tsv extension (for blank, comma or tab-separated
values).
If you call the TextAdapter directly, there are constructors that allow you to
pass in the MathTypes and "file descriptor"; otherwise, you have to put them
into the file. In your example, you'd need to have:
(Longitude,Latitude)->(pressure)
Latitude Longitude pressure[unit=hPa]
1 2 3
4 5 6
7 8 9
(one, or more, blanks for the delimeter in ".txt" files).
To my knowledge no one else has used this yet, so if you have
questions/problems, please let me know.
tom
John Stevens wrote:
>
> Hello everyone,
>
> I am new to this forum, having explored VisAD I think it is a great piece of
> software (nice documentation too).
>
> I have a problem I dont know if anyone can help me. I have the following
> type of mapping
>
> (longitude,latitude -> pressure)
>
> From a simple data I made up, the example that I am using is:
>
> long lat press
> 1 1 3
> 2 2 5
> 3 3 10
> 4 4 11
> 5 5 15
> 6 6 23
> 7 7 29
>
> This data is saved as a text file. Now currently I am using SpreadSheet to
> implement my program. Whenever I import this text file into SpreadSheet I
> get a error message saying 'The source cannot be converted into VisAD data'.
> So my question is can VisAD recognise this type of data? Or do I have to
> create my own class to do this. I appreciate it if anyone can help me out,
>
> Thx,
>
> John
> _________________________________________________________________________
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--
Tom Whittaker (tomw@xxxxxxxxxxxxx)
University of Wisconsin-Madison
Space Science and Engineering Center
Phone/VoiceMail: 608/262-2759
Fax: 608/262-5974
