Read ED meteorology header file

Read a ED_MET_DRIVER_HEADER file into a list-like object that can be manipulated within R. Returns a list of file formats.

read_ed_metheader(filename, check = TRUE, check_files = TRUE)

Arguments

filename

File name (including path) of met driver header file, as character

check

Logical, whether or not to check file for correctness (default = TRUE)

check_files

Logical. If TRUE, perform basic diagnostics on met files as well.

Value

List of ED met input parameters. See Details.

Details

The output is an unnamed list with each element corresponding to a single file format. Each file format contains the following elements:

• path_prefix – Path and prefix of files

• nlon – Number of longitude grid cells

• nlat – Number of latitude grid cells

• dx – Size of longitude grid cell

• dy – Size of latitude grid cell

• xmin – Minimum longitude

• ymin – Minimum latitude

• variables – Data frame of variables, with the columns described below. Starred columns are required for writing. This table is left joined with met_variable_description and met_flag_description.

  • variable – Variable name

  • description – Variable description

  • unit – Variable unit

  • update_frequency – Update frequency (seconds) or scalar values if flag=4

  • flag – Variable flags.

  • flag_description – Description of variable flag

The formatting of a meteorology header file is as follows (from the ED GitHub Wiki):

<number of file formats>    # Repeat lines below this number of times
<path and prefix of files>
<nlon>, <nlat>, <dx>, <dy>, <xmin>, <ymin>
<number of variables>
<list of variable names>
<list of update frequencies (seconds) or scalar values if flag=4>
<list of variable flags>

The variables in the third row are defined as follows: