HLU library initialization functions.
#include <ncarg/hlu/hlu.h> void NhlOpen() void NhlInitialize()
subroutine NhlFOpen subroutine NhlFInitialize
NhlOpen is the normal way to initialize the HLU library. It is the simplest interface.
NhlInitialize differs from NhlOpen in that the programmer must create an App object after calling it, and before any other objects can be created.
The HLU library can only be initialized using the Fortran binding if the main program is written in Fortran since that is the only time Fortran I/O is guaranteed to be initialized.
The HLU library can only be initialized once, even if NhlClose is called, so be sure to only call NhlClose when you are completely done using the HLU library.
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