Why the library plot3d appears as not installed in my GMT6 installed on Mac pc ?.
This is the error message:
ERROR: No module named plot3d was found. This could mean one of four cases:
- There actually is no such module; please check your spelling.
- You used a modern mode module name while running in GMT classic mode.
- Module exists in the GMT supplemental library, but the library could not be found.
- Module exists in a GMT custom library, but none was specified via GMT_CUSTOM_LIBS.
Nevertheless, the manual page of plot3d is showed and the help page also.