GDAL reads and writes JUMP JML now

[Jukka Rahkonen]

Hi,

Since yesterday GDAL can read and write the JUMP JML format
http://gdal.org/drv_jml.html

What does it mean?

· Data from any vector format that is supported by GDAL
http://www.gdal.org/ogr_formats.html can be converted from and into JUMP
JML format without a need to use shapefiles as interim format. That
removes some problems which come from the limitations of the shapefile
format:
o Column names can be longer than 10 characters
o Values in string fields can be longer than 255 characters
o Long datatime data type is supported
o If source data contains mixed geometry types there is no need to
split data into separate shapefiles by the geometry type

I believe that GDAL JML driver will make is easier to use OpenJUMP in
workflows where data comes from various sources and several programs are
used in the processing chain.

For testing the driver a GDAL from current trunk (revision r27882 or
higher) is needed. Windows users can get ready made binaries from
http://gisinternals.com/sdk/ by selecting some of the “development”
versions. The GDAL tool to use is ogr2ogr http://gdal.org/ogr2ogr.html.
As an example, for converting data from MapInfo tab into JML format the
command to use is

ogr2ogr –f JML output.jml input.tab

Feedback is welcome. I already noticed that at least on Windows with
Finnish locale OpenJUMP claims to store XML in UTF-8 which is not true.

Driver is written by Even Rouault and donated to OpenJUMP community by
me.

-Jukka Rahkonen-