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I created a shapefile from public GIS data, that I wanted to display in Google Maps for presentation purposes. The original .shp used small line segments for roads. Maybe a picture will make sense:

enter image description here

As you can see, the feature class is made up on 164 little line segments. I want it to be one contiguous feature, so that when I import into Google Maps, it doesn't list every separate line segment. How can I do that?

For the record, I'm using QGIS 3.6.1 with GRASS 7.6.1.

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Use the Dissolve to under the Vector ---- > Geoprocessing Tools ---- > Dissolve

enter image description here

Take a look at the answer in this thread which explains in details how you can dissolve lines based on an attribute.

The right way to convert GeoJSON to DXF using QGIS

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