Re: [gdal-dev] Creating new column with filename, scripting shapefiles
Joe,
What was the full warning message about the normalized/laundered field
name? Field name is modified when the name is longer than 10 characters or
when a field with same name exists.
Check the name of the newly created field.
As per the update command, I don't think the update command is implemented
in the ogr sql yet. You can do it in the sqlite format, among other rdbms
formats. Use ogr2ogr to convert it to sqlite. update it. convert it back to
shapefile.
On Thu, Nov 29, 2012 at 8:58 PM, Joe Larson j...@joelarson.com wrote:
I have tried these three methods to add a filename column while scripting
a folder of shapefiles, with a Bash script - which results in `Warning 6:
Normalized/laundered field name` `ERROR 1: SQL Expression Parsing Error:
syntax error` messages and NULL values in the created column :
#1
for f in *.shp;
do
name=${f%.shp}
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
done;
#2
for f in *.shp;
do
name=`echo $f|sed 's/\.shp$//g'`
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
done;
#3
for f in *.shp;
do
name=`basename $f .shp`
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
done;
There's an example here http://trac.osgeo.org/gdal/wiki/FAQVector called
How do I include the source filename in a field when merging hundreds of
shapefiles (Windows)? I also cannot get this to work - getting
unrecognized fieldname message.
Perhaps my variable does not work in the Bash SQL statement. I'm not sure
what's going on in the Windows example.
Regards,
Joe Larson
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Best regards,
Chaitanya kumar CH.
+91-9494447584
17.2416N 80.1426E
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Re: [gdal-dev] Creating new column with filename, scripting shapefiles
On Thu, Nov 29, 2012 at 3:54 PM, Chaitanya kumar CH
chaitanya...@gmail.com wrote:
Joe,
What was the full warning message about the normalized/laundered field name?
Field name is modified when the name is longer than 10 characters or when a
field with same name exists.
Check the name of the newly created field.
As per the update command, I don't think the update command is implemented
in the ogr sql yet. You can do it in the sqlite format, among other rdbms
formats. Use ogr2ogr to convert it to sqlite. update it. convert it back to
shapefile.
or use the ogr-sqlite interface that is present in gdal 1.10 - it
supposedly works with all ogr data sources
http://www.gdal.org/ogr/ogr_sql_sqlite.html
On Thu, Nov 29, 2012 at 8:58 PM, Joe Larson j...@joelarson.com wrote:
I have tried these three methods to add a filename column while scripting
a folder of shapefiles, with a Bash script - which results in `Warning 6:
Normalized/laundered field name` `ERROR 1: SQL Expression Parsing Error:
syntax error` messages and NULL values in the created column :
#1
for f in *.shp;
do
name=${f%.shp}
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
done;
#2
for f in *.shp;
do
name=`echo $f|sed 's/\.shp$//g'`
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
done;
#3
for f in *.shp;
do
name=`basename $f .shp`
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
done;
There's an example here http://trac.osgeo.org/gdal/wiki/FAQVector called
How do I include the source filename in a field when merging hundreds of
shapefiles (Windows)? I also cannot get this to work - getting
unrecognized fieldname message.
Perhaps my variable does not work in the Bash SQL statement. I'm not sure
what's going on in the Windows example.
Regards,
Joe Larson
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--
Best regards,
Chaitanya kumar CH.
+91-9494447584
17.2416N 80.1426E
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Re: [gdal-dev] Creating new column with filename, scripting shapefiles
Even- your guidance and correction was the solution that worked for me. Thank
you! _ joe
On Nov 29, 2012, at 11:00:47AM, Even Rouault even.roua...@mines-paris.org
wrote:
Le jeudi 29 novembre 2012 16:28:33, Joe Larson a écrit :
I have tried these three methods to add a filename column while scripting a
folder of shapefiles, with a Bash script - which results in `Warning 6:
Normalized/laundered field name` `ERROR 1: SQL Expression Parsing Error:
syntax error` messages and NULL values in the created column :
#1
for f in *.shp;
do
name=${f%.shp}
ogrinfo $f -sql ALTER TABLE $name ADD COLUMN filename character(10)
ogrinfo $f -sql UPDATE TABLE $name filename = '$f'
-- UPDATE syntax is not supported by OGR SQL dialect. See
http://gdal.org/ogr/ogr_sql.html
If you use the development version of GDAL (GDAL 1.10dev), you could however
use the SQLite dialect to do UPDATEs : http://gdal.org/ogr/ogr_sql_sqlite.html
Actually your SQL is incorrect. The correct syntax would be :
ogrinfo $f -dialect SQLite -sql UPDATE $name SET filename = '$f'
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