g2cdegrib2.c(3) Library Functions Manual g2cdegrib2.c(3)

g2cdegrib2.c - Write summary output to a file, as is done by utility grb2index.

#include 'grib2_int.h'
#include <math.h>
#include <stdarg.h>


#define G2C_DATE_TIME_LEN 25
Size of the date/time string. #define G2C_MAX_TYPE_OF_FIXED_SURFACE_LEN 40
Maximum length of 'Type of first fixed surface' string.


static int format_level (char *cbuf, int ival, int scale)
Format the level string for degrib2 output. int g2c_degrib2 (int g2cid, const char *fileout)
Write a summary file like the degrib2 utility. int g2c_get_datetime (int ipdtn, long long int *ipdtmpl, short year, unsigned char month, unsigned char day, unsigned char hour, unsigned char minute, unsigned char second, char *tabbrev)
Convert date and time from GRIB2 info to string output. int g2c_get_level_desc (int ipdtn, long long int *ipdtmpl, char *level_desc)
Determine the string that describes the level information, given the GRIB2 Product Definition Template information.


G2C_FILE_INFO_T g2c_file [G2C_MAX_FILES+1]
Global file information. G2C_CODE_TABLE_T * g2c_table
Pointer to the list of code tables.

Write summary output to a file, as is done by utility grb2index.

Author

Ed Hartnett

Date

Sep 17, 2022

Definition in file g2cdegrib2.c.

Size of the date/time string.

Definition at line 21 of file g2cdegrib2.c.

Maximum length of 'Type of first fixed surface' string.

Definition at line 19 of file g2cdegrib2.c.

Format the level string for degrib2 output.

Parameters

cbuf Character buffer of length 11 which will get the formatted level description.
ival Integer value which may need scaling.
scale Scaling factor information.

Returns

•
G2C_NOERROR No error.

Author

Ed Hartnett

Date

11/16/22

Definition at line 254 of file g2cdegrib2.c.

References G2C_NOERROR.

Referenced by g2c_get_level_desc().

Write a summary file like the degrib2 utility.

Parameters

g2cid Indentifier for the file, returned by g2c_open() or g2c_create().
fileout Path of output file. Any existing file of this name will be overwritten.

Returns

  • G2C_NOERROR No error.
  • G2C_EINVAL Invalid parameters.
  • G2C_EFILE File I/O error.

Author

Ed Hartnett

Date

Sep 17, 2022

Definition at line 634 of file g2cdegrib2.c.

References g2c_message_info::bytes_in_msg, g2c_message_info::bytes_to_msg, g2c_message_info::center, g2c_section5_info::data_def, g2c_message_info::day, g2c_message_info::discipline, G2C_EBADID, G2C_EFILE, G2C_EINVAL, G2C_ENOSECTION, G2C_ERROR, g2c_file, g2c_get_datetime(), g2c_get_level_desc(), g2c_get_prod(), G2C_MAX_FILES, G2C_MAX_NOAA_ABBREV_LEN, G2C_MAX_TYPE_OF_FIXED_SURFACE_LEN, G2C_NOERROR, g2c_param_abbrev(), g2c_section3_info::grid_def, g2c_message_info::hour, g2c_section6_info::indicator, g2c_section3_info::interp_list, g2c_message_info::local_version, LOG, g2c_message_info::master_version, g2c_message_info::minute, g2c_message_info::month, g2c_section_info::msg, g2c_message_info::msg_num, g2c_message_info::next, g2c_section_info::next, g2c_section4_info::num_coord, g2c_section3_info::num_data_points, g2c_section5_info::num_data_points, g2c_message_info::num_fields, g2c_message_info::num_local, g2c_section3_info::num_opt, g2c_section3_info::optional, g2c_section_info::prev, g2c_section4_info::prod_def, g2c_message_info::sec, g2c_section_info::sec_info, g2c_section_info::sec_len, g2c_section_info::sec_num, g2c_message_info::second, g2c_message_info::sig_ref_time, g2c_section3_info::source_grid_def, g2c_message_info::status, g2c_message_info::subcenter, g2c_section_info::template, g2c_section_info::template_len, g2c_message_info::type, and g2c_message_info::year.

Referenced by main().

Convert date and time from GRIB2 info to string output.

Note

This function is based on the prvtime() function in NCEPLIBS-grib_utils.

Parameters

ipdtn Product Definition Template Number ([Code Table 4.0] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-0.shtml)).
ipdtmpl Array of data values for the Product Definition Template specified by ipdtn.
year year
month month
day day
hour hour
minute minute
second second
tabbrev Character array that will get the date and time string. Must be of length 100.

Returns

•
G2C_NOERROR No error.

Author

Ed Hartnett

Date

Sep 28, 2022

Definition at line 49 of file g2cdegrib2.c.

References G2C_DATE_TIME_LEN, and G2C_NOERROR.

Referenced by g2c_degrib2().

Determine the string that describes the level information, given the GRIB2 Product Definition Template information. This subroutine finds the 'Type of first fixed surface' (see [Code table 4.5](https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_temp4-0.shtml)) using the product definition template value and product template array. The location in the template array varies depending on the template number.

Parameters

ipdtn Product Definition Template Number ([Code Table 4.0] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-0.shtml)).
ipdtmpl Array of data values for the Product Definition Template specified by ipdtn.
level_desc Character array which gets the string describing the level. Must be of length 40.

Returns

•
G2C_NOERROR No error.

Author

Ed Hartnett

Date

Sep 28, 2022

Definition at line 309 of file g2cdegrib2.c.

References format_level(), and G2C_NOERROR.

Referenced by g2c_degrib2().

G2C_FILE_INFO_T g2c_file[G2C_MAX_FILES+1] [extern]

Global file information.

Definition at line 10 of file g2cfile.c.

Referenced by g2c_degrib2().

G2C_CODE_TABLE_T* g2c_table [extern]

Pointer to the list of code tables.

Definition at line 16 of file g2ccsv.c.

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