QGIS – Convert Shapefile to KML

convertkmlpolygonqgisshapefile

I have one big layer which contains many polygons. This layer is a shapefile and I want to convert it to be many layers, each layer containing one polygon, and those polygon layers should be saved as KML. I have tried to use the tool ''Convert Format'' as I was advised by other people but I can't understand how to make it into KML and all I get is a new layer called ''converted'' and I can't find the difference.

What did I miss?

The end goal is to have many KML filles in the end, one KML layer per polygon

Best Answer

As per the comment, you need to choose the format you want to convert to by choosing the Save to file option in the 'Converted section, and then picking the format you want to convert to.

You need to end up with a GDAL command that begins with

ogr2ogr -f "LIBKML"

You have to do this because the default option for this tool as per the documentation is save to shapefile

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[GIS] KML to Shapefile using GDAL (LIBKML) – MultiGeometry data not transforming

Shapefiles don't support MultiGeometry or GeometryCollections, but ogr2ogr can explode them:

ogr2ogr -nlt POLYGON -explodecollections -skipfailures us_states.shp us_states.kml

-explodecollections: (starting with GDAL 1.8.0) produce one feature for each geometry in any kind of geometry collection in the source file

[GIS] Convert a KML ImageOverlay to World Files with GDAL

I made a version of WorldFileTool (which I'll call 0.3.8 because the project seems dead) that supports CLI input and can be included as part of a GDAL script:

Command line argument:

 java -jar WorldFileTool.jar image-overlay-file.kml
     Will write out pgw/tgw/jgw world file to the same folder
     Without arguments, the GUI is loaded.

It writes out a pgw/tgw/jgw file in the same folder as the kml, with the same name as the image file.

I evaluated a few shell scripts that claim to do the same task but this tool was the only one that started to feel at least slightly robust. I'd like to convert from subversion repository to github to release the source.

On Ubuntu 13.10, I built it with:

sudo apt-get install junit
export CLASSPATH=.:/usr/share/java/junit4.jar
ant

Best Answer

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[GIS] KML to Shapefile using GDAL (LIBKML) – MultiGeometry data not transforming

[GIS] Convert a KML ImageOverlay to World Files with GDAL

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