I have a data set with a large number of start and end positions. I am trying to generate lines between start and end positions using the Geometry Generator but it does not work. I get no errors when running it, but the lines do not appear. I have found several answers to a similar qestion, e.g. this one, : Creating a line from two points in QGIS I select geometry Type as "LineString. Here is the code I have been trying to use. make_line(make_point("shootlon" ,"shootlat"), make_point("haullon", "haullat"))
Small screenshot of the data, which is a text ("txt") file.
What could be the problem? Some of the older plugins e.g. "Points2one", do not work in QGIS 3.4.4.
Best Answer
This is how my attribute table looks like
This is the expression to use :
Then press Ok