Recently I implemented an 'XY to Line' function in the ShapeTools plugin. This has been requested several times and I needed it so I implemented it. See
http://plugins.qgis.org/plugins/shapetools/ XY to Line is similar to the ArcGIS tool with the same name. http://pro.arcgis.com/en/pro-app/tool-reference/data-management/xy-to-line.htm In my plugin I have only implemented "Great Circle" lines as well as a simple line between the two points. How important would it be to implement other geodetic line types ie GEODESIC , RHUMB_LINE, and NORMAL_SECTION. I had the code for Great Circle so it was easy to implement, but I don't know how to implement the others. I have seen some of the suggestions with drawing these lines by using custom azimuthal equidistant (aeqd) projection or a gnomonic (gnom) projection centered on the starting point, creating a simple line, densifying it, then projecting it back to the projection being used. See http://gis.stackexchange.com/questions/133026/great-circles-in-qgis-and-export-in-3857-webmap Would this technique work to create the other types of geodetic lines and if so what would the proper proj4 projections be? Is there a better way to do this? Do you think that Great Circle is sufficient? Another question I have is whether there are other ArcGIS functions that are missing in QGIS that would be good to implement. Thanks, C. Hamilton
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