How can I find intersection point in a road network in one line shapefile?
I am using QGIS 2.18.
How can I get the intersection point shown in blue colour
Ok, that's the steps you need to folow.
I am not sure if i translate it correctly because not i am using polish version of QGIS. You can find in Vector toolbox.
After that just select same feature line twice without any unic fields.
Ok i see that Dissolve in Qgis is a bit different that Dissolve in ArcGIS. But to work around it i came up with this idea.
Do you have the spatial query plugin installed? If so, you can probably follow the instructions here to query what you need: http://www.qgistutorials.com/en/docs/performing_spatial_queries.html.
If you only want to find one intersection, just make sure you pay close attention to how they limit the selection to rivers in the example. The same principles should apply for your query.