Plotting in World Coordinates
Plots can be created with their positional axis in Pixel Coordinates or World Coordinates. The selection is made using the World Coordinates Option, which can be changed from a number of places in Mira.
From the Plot Menu when an Image Window is active, click Plot > Coordinate Mode > World as show below:
This command is also duplicated in the Plot Context Menu.
From the Plot Preferences page:, select World Coordinate from the list box.
Plot Windows, Plot Coordinate Systems