Grib API examples

The main features of the grib_api are explained here through some simple examples that can be taken as a starting point to write more complex programs.

Fortran 90

• index.f90 how to access a grib file through an index.
• get.f90 how to get values through the key names.
• count_messages.f90 count the messages in a file and loop through them.
• get_pl.f90 how to get the list of number of points for each parallel in reduced grids.
• get_pv.f90 how to get the list of levels.
• get_data.f90 how to get latitude/longitude/values.
• set.f90 how to set values through the key names.
• set_bitmap.f90 how to set and use a bitmap.
• set_missing.f90 how to set a missing value in the header.
• set_pv.f90 how to set the list of levels.
• samples.f90 how to create a new message from a template.
• clone.f90 how to clone a message.
• copy_message.f90 how to copy a message in memory and create a new message.
• keys_iterator.f90 how to get the names of all the keys defined in a message and how to iterate through them.
• precision.f90 how to control precision when coding a grib field.
• multi_write.f90 how to encode a grib message containing many fields.
• multi.f90 how to decode a grib message containing many fields.
• print_data.f90 how to print all the data contained in a grib file.
• nearest.f90 how to find the nearest grid points.

C

• get.c is an example showing how to get values through the key names.
• set.c is an example illustrating how to set values through the key names.
• keys_iterator.c explains how to get the names of all the keys defined in a message and how to iterate through them.
• iterator.c shows how to use an iterator on latitude, longitude, values.
• precision.c illustrates how to control precision when coding a grib field.
• multi.c is an example describing how to decode a grib message containing many fields.
• print_data.c is an example on how to print all the data contained in a grib file.
• nearest.c is an example on how to find the nearest grid points.
• multi_write.c how to encode a grib message containing many fields.
• multi.c how to decode a grib message containing many fields.

Fortran 77

• get_fortran.F is an example showing how to get values through the key names.
• set_fortran.F is an example illustrating how to set values through the key names.
• keys_iterator_fortran.F explains how to get the names of all the keys defined in a message and how to iterate through them.
• iterator_fortran.F shows how to use an iterator on latitude, longitude, values.
• precision_fortran.F illustrates how to control precision when coding a grib field.
• multi_fortran.F is an example describing how to decode a grib message containing many fields.
• print_data_fortran.F is an example on how to print all the data contained in a grib file.

---