I use .CSVs all the time to make sure I don't have to do any 
translations between Maptitude, Excel, and SAS.  If we had the module 
that allowed SAS to work with .DBFs I would have fewer headaches.


--- In [email protected], "Kjartan Stefansson" <[EMAIL PROTECTED]> 
wrote:
> Tom,
> 
> I'm sorry I didn't realize that there is one file type where this 
problem
> happens!  I use CSV files so rarely myself that I didn't think of 
them.
> 
> Unfortunately, CSV files are read-only for most purposes.
> 
> The reason is that if you were to change a value in one cell, the 
entire
> table from that point on would have to have to be rewritten.  This 
is
> different from other formats (dBase, Fixed format binary, Fixed 
format
> ASCII), which have the room in the file.
> 
> I'm in complete agreement with you that it is a awkward that 
Maptitude
> allows you to add a column to the file, but not to modify it.  I'll 
make
> sure this gets passed on to the right people.  If nothing else, the 
user
> should be warned that adding a column to a CSV file will result in 
an
> un-editable column.
> 
> -Kjartan
> 
> 
> 
> -----Original Message-----
> From: [email protected] [mailto:[EMAIL PROTECTED] 
On Behalf
> Of bjs_market_research
> Sent: Tuesday, May 10, 2005 3:56 PM
> To: [email protected]
> Subject: [Maptitude] Re: Read-Only Columns
> 
> I created a point file from a .csv file.  Opened it for exclusive 
> access, but when I added a column from the modify table/add field 
it 
> was read-only.  There were no instructions given by me to make 
> anything read-only:  Maptitude decided that on its own.  The only 
fix 
> was to rebuild the file.  I can't figure out why anyone would want 
to 
> add a column to a table and not be able to update it.




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