[R-sig-Geo] DBF file size

[Alex Mandel]

Oh right I was thinking about max number of characters in a text field.
It's possibly that the limit is based on the maximum number of bytes
that can be used to hold one record. So the number of Columns would vary
with how much data is actually in them.
http://www.dbase.com/KnowledgeBase/int/db7_file_fmt.htm

Might be worthwhile to ask the creator of your Groundwater app if it's
possible to use other formats.

Also check on the R-sig-db email list, maybe there's a compile time
option to tweak the max columns on write.dbf

Alex

On 10/13/2010 01:20 PM, kapo coulibaly wrote:
> I'm doing Groundwater Modeling and that is the appropriate input format for
> the GUI I'm using (Groundwater vistas) for what I'm trying to do. Funny
> enough I was able to create a dbf with 512 columns in ArcGIS but as I said I
> needed more.
> 
> Thanks
> 
> On Wed, Oct 13, 2010 at 4:11 PM, Alex Mandel <tech_dev at wildintellect.com>wrote:
> 
>> On 10/13/2010 12:32 PM, kapo coulibaly wrote:
>>> I imported a DBF with more than 256 columns using read.dbf. But when i
>> write
>>> it back out with write.dbf, only the first 256 columns are written out.
>> Is
>>> there a way to export dbf files with more columns. (I actually need about
>>> 1200 columns)
>>>
>>> thanks
>>>
>>>       [[alternative HTML version deleted]]
>>>
>>
>> Nope, that is a limitation of the dbf format. Depending on your usage of
>> the output file it would be best to choose another format. Are you
>> exporting a spatial file or just a data table? What end program do you
>> need to be able to pull the created file into?
>>
>> Thanks,
>> Alex
>>
>> 
>