Interactively modify map parallels
Tools > Parallels (menu)
parallelui toggles the parallel tool on
parallelui on activates the parallel tool
parallelui off deactivates the parallel
parallelui GUI provides a tool to modify
the standard parallels of a displayed map projection. One or two red
lines are displayed where the standard parallels are currently located.
The parallel lines can be dragged to new locations, and the map reprojected
with the locations of the parallel lines as the new standard parallels.
A single-click-and-drag moves the parallel lines. A double-click on one of the standard parallels reprojects the map using the new parallel locations.