R: Re: [gdal-dev] create kml file using MySQL database or shape
sigfrido at tiscali.it
sigfrido at tiscali.it
Wed May 4 09:03:16 EDT 2011
try to explicitly add g (the geometric column) in the select clause:
SELECT g, koy,lat,lng,sisint from deneme2
otherwise ogr2ogr won't be able to see it when creating KML layer.
All the best
Da: beyhan at deprem.gov.tr
Data: 04/05/2011 14.25
A: "sigfrido at tiscali.it"<sigfrido at tiscali.it>
Cc: "gdal-dev at lists.osgeo.org"<gdal-dev at lists.osgeo.org>
Ogg: Re: R: Re: [gdal-dev] create kml file using MySQL database or
As you told me I have added a geometry column to my database as g
I executed following sql statement
This is the first time for me to make spatial database table . So I
think first of all I have to learn more about Spatial database concept
SET g = GeomFromText(
CONCAT('POINT(', CAST(lat AS CHARACTER(20)),
' ', CAST(lng AS CHARACTER(20)),')')
than I used
ogr2ogr -f KML sisint.kml
tables=deneme2' -sql "SELECT koy,lat,lng,sisint from deneme2"
ogrinfo -ro sisint.kml
The problem is there is no layer in KML file I think.
ERROR 4: No layers in KML file: sisint.kml.
Unable to open datasource `sisint.kml' with the following drivers.
-> ESRI Shapefile
-> MapInfo File
-> UK .NTF
-> Interlis 1
-> Interlis 2
so I couldn't understand what is wrong or what I have to do first.
Really I need to create such a point or polygon data extracted from
MySQL database to KML format. Please help me
On Wed, 2011-05-04 at 12:08 +0200, sigfrido at tiscali.it wrote:
> Hi Murat,
> I'm not so much into KML, but I think that maybe the
> problem is with your SQL: you are not including any geometry column
> the select instruction. If you open the KML file with a text
> you can see if the points are being exported and with which
> Does the MySQL table have a geometric column? Or you just
> have the lon/lat coordinates?
> If you don't have geometry you have first
> to add it to the MySQL table, update it with the point geometry
> from lon/lat, and then export the points in KML.
> Hope this helps
> ----Messaggio originale----
> Da: beyhan at deprem.gov.tr
> Data: 04/05/2011
> A: "Luca Sigfrido Percich"<sigfrido at tiscali.it>
> Cc: "gdal-
> dev at lists.osgeo.org"<gdal-dev at lists.osgeo.org>
> Ogg: Re: [gdal-dev]
> create kml file using MySQL database or shape file
> Dear Sigfrido,
> Thank you for your help,
> I corrected the script and it works but when I
> open it with google-earth
> points doesn't seem on the map I sent
> snapshot of the google-earth.I
> think problem is latitude and longitude
> could not read by the
> So How can I fix it...
> ogr2ogr -f KML sisint.kml
> password=mysql_123,port=3306,tables=sisint' -sql "SELECT koy,
> longitude, latitude , sisint from sisint"
> koy means village name.
> sisint menans seismic intensity value of the village
> On Tue,
> 2011-05-03 at 17:33 +0200, Luca Sigfrido Percich wrote:
> > Hi Murat,
> > Il giorno mar, 03/05/2011 alle 16.57 +0300, Murat Beyhan ha
> > > ogr2ogr -f KML simgmt.kml simgmt.shp -dsco NameField=RegionName
> > >
> this can create a file but strangely data collected at one point.
> Probably it is a Spatial Reference System related problem: you
> specify the source shapefile SRS. Have a look at the KML file and
> > the points have different coordinates, and see what SRS has been
> declared for it. Have a look at the -a_srs, -t_srs and -s_srs
> > ogr2ogr.
> > > ogr2ogr -f KML sisint.kml MySQL
> :'host=localhost user=root
> > > password=mysql_pswd port=3306
> dbname=afetler tables=sisint' -sql "SELECT
> > > latitude,longitude,
> sisint from sisint"
> > Try with no space between MySQL and :, and
> specifying the database name
> > before any other option:
> > ogr2ogr -f
> KML sisint.kml
> > MySQL:'afetler,host=localhost,user=root,
> password=mysql_pswd,port=3306,tables=sisint' -sql "SELECT latitude,
> longitude,sisint from sisint"
> > All the best
> > Sig
> Murat BEYHAN
> Geophysical Engineer, M.Sc.
> Prime Ministry
> Disaster and
> Emergency Management Presidency
> Earthquake Department
> Eskisehir Yolu 12. Km.
> Tel: 312 2872680-1556
> beyhan at deprem.gov.tr
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