I want to write contour figure on world map.
I have seen the tutorial/graphics/earth.C.
“MERCATOR” option makes contour figure.
When another contour figure draw same canvas, the world map is filled by the other figure.
How to write the contour figure on world map?
And I have another question.
Why the Y axis of “MERCATOR” figure is -2.5 to 2.5?
Any help with this issue would be greatly appreciated.