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language | none |
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title | bufr_read_temp.f90 |
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linenumbers | false |
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| ! Copyright 2005-2016 ECMWF.
!
! This software is licensed under the terms of the Apache Licence Version 2.0
! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
!
! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
!
!
! FORTRAN 90 Implementation: bufr_read_temp
!
! Description: how to read levels from TEMP BUFR messages.
!
! Please note that TEMP reports can be encoded in various ways in BUFR. Therefore the code
! below might not work directly for other types of TEMP messages than the one used in the
! example. It is advised to use bufr_dump first to understand the structure of these messages.
!
program bufr_read_temp
use eccodes
implicit none
integer :: ifile
integer :: iret
integer :: ibufr
integer :: i, count=0
integer(kind=4),dimension(:), allocatable :: timePeriod,extendedVerticalSoundingSignificance
integer(kind=4) :: blockNumber,stationNumber
real(kind=8),dimension(:), allocatable :: pressure,airTemperature,dewpointTemperature
real(kind=8),dimension(:), allocatable :: geopotentialHeight,latitudeDisplacement,longitudeDisplacement
real(kind=8),dimension(:), allocatable :: windDirection,windSpeed
call codes_open_file(ifile,'../../data/bufr/PraticaTemp.bufr','r')
! the first bufr message is loaded from file
! ibufr is the bufr id to be used in subsequent calls
call codes_bufr_new_from_file(ifile,ibufr,iret)
do while (iret/=CODES_END_OF_FILE)
write(*,*) 'message: ',count
call codes_set(ibufr,'unpack',1)
call codes_get(ibufr,'timePeriod',timePeriod)
call codes_get(ibufr,'pressure',pressure)
call codes_get(ibufr,'extendedVerticalSoundingSignificance',extendedVerticalSoundingSignificance)
call codes_get(ibufr,'nonCoordinateGeopotentialHeight',geopotentialHeight)
call codes_get(ibufr,'latitudeDisplacement',latitudeDisplacement)
call codes_get(ibufr,'longitudeDisplacement',longitudeDisplacement)
call codes_get(ibufr,'airTemperature',airTemperature)
call codes_get(ibufr,'dewpointTemperature',dewpointTemperature)
call codes_get(ibufr,'windDirection',windDirection)
call codes_get(ibufr,'windSpeed',windSpeed)
call codes_get(ibufr,'blockNumber',blockNumber)
call codes_get(ibufr,'stationNumber',stationNumber)
print *,'station',blockNumber,stationNumber
print *,'timePeriod pressure geopotentialHeight latitudeDisplacement &
&longitudeDisplacement airTemperature windDirection windSpeed significance'
do i=1,size(windSpeed)
write(*,'(I5,6X,F9.1,2X,F9.2,10X,F8.2,14X,F8.2,16X,F8.2,6X,F8.2,4X,F8.2,4X,I0)') timePeriod(i),pressure(i),&
&geopotentialHeight(i),latitudeDisplacement(i),&
&longitudeDisplacement(i),airTemperature(i),windDirection(i),windSpeed(i),extendedVerticalSoundingSignificance(i)
enddo
! free arrays
deallocate(timePeriod)
deallocate(pressure)
deallocate(geopotentialHeight)
deallocate(latitudeDisplacement)
deallocate(longitudeDisplacement)
deallocate(airTemperature)
deallocate(dewpointTemperature)
deallocate(windDirection)
deallocate(windSpeed)
deallocate(extendedVerticalSoundingSignificance)
! release the bufr message
call codes_release(ibufr)
! load the next bufr message
call codes_bufr_new_from_file(ifile,ibufr,iret)
count=count+1
end do
! close file
call codes_close_file(ifile)
end program bufr_read_temp
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language | python |
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title | bufr_read_temp.py |
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linenumbers | false |
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| #
# Copyright 2005-2016 ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
#
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation
# nor does it submit to any jurisdiction.
#
# Python implementation: bufr_read_temp
#
# Description: how to read levels from TEMP BUFR messages.
#
#
#
# Please note that TEMP reports can be encoded in various ways in BUFR.
# Therefore the code below might not work directly for other types of TEMP
# messages than the one used in the example. It is advised to use bufr_dump to
# understand the structure of the messages.
#
import traceback
import sys
from eccodes import *
INPUT = '../../data/bufr/PraticaTemp.bufr'
VERBOSE = 1 # verbose error reporting
def example():
# open bufr file
f = open(INPUT)
cnt = 0
# loop over the messages in the file
while 1:
# get handle for message
bufr = codes_bufr_new_from_file(f)
if bufr is None:
break
print "message: %s" % cnt
# we need to instruct ecCodes to expand all the descriptors
# i.e. unpack the data section
codes_set(bufr, 'unpack', 1)
# get all the timePeriods
timePeriod = codes_get_array(bufr, "timePeriod")
pressure = codes_get_array(bufr, "pressure")
extendedVerticalSoundingSignificance = codes_get_array(bufr, "extendedVerticalSoundingSignificance")
geopotentialHeight = codes_get_array(bufr, "nonCoordinateGeopotentialHeight")
latitudeDisplacement = codes_get_array(bufr, "latitudeDisplacement")
longitudeDisplacement = codes_get_array(bufr, "longitudeDisplacement")
airTemperature = codes_get_array(bufr, "airTemperature")
dewpointTemperature = codes_get_array(bufr, "dewpointTemperature")
windDirection = codes_get_array(bufr, "windDirection")
windSpeed = codes_get_array(bufr, "windSpeed")
blockNumber = codes_get(bufr, "blockNumber")
stationNumber = codes_get(bufr, "stationNumber")
print 'station %d%d' % (blockNumber,stationNumber)
print 'timePeriod pressure geopotentialHeight latitudeDisplacement longitudeDisplacement airTemperature windDirection windSpeed significance'
for i in range(0,len(windSpeed)-1):
print timePeriod[i],pressure[i],geopotentialHeight[i],latitudeDisplacement[i],longitudeDisplacement[i],airTemperature[i],windDirection[i],windSpeed[i],extendedVerticalSoundingSignificance[i]
cnt += 1
# delete handle
codes_release(bufr)
# close the file
f.close()
def main():
try:
example()
except CodesInternalError as err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
sys.stderr.write(err.msg + '\n')
return 1
if __name__ == "__main__":
sys.exit(main())
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| Code Block |
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language | cpp |
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title | bufr_read_temp.c |
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linenumbers | false |
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| /*
* Copyright 2005-2016 ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
*
* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
*/
/*
* C Implementation: bufr_read_temp
*
* Description: how to read temperature significant levels from TEMP BUFR messages.
*
*/
/*
* Please note that TEMP reports can be encoded in various ways in BUFR. Therefore the code
* below might not work directly for other types of TEMP messages than the one used in the
* example. It is advised to use bufr_dump to understand the structure of the messages.
*/
#include "eccodes.h"
int main(int argc,char* argv[])
{
FILE* in = NULL;
/* Message handle. Required in all the eccodes calls acting on a message.*/
codes_handle* h=NULL;
double *sigt_pres=NULL, *sigt_geo=NULL, *sigt_t=NULL;
double *sigt_td=NULL;
size_t sigt_len=0, len=0, i=0;
int err=0;
int cnt=0;
const char* infile = "../../data/bufr/temp_101.bufr";
char key_name[128];
in=fopen(infile,"r");
if (!in) {
printf("ERROR: unable to open file %s\n", infile);
return 1;
}
/* Loop over the messages in the bufr file */
while ((h = codes_handle_new_from_file(NULL,in,PRODUCT_BUFR,&err)) != NULL || err != CODES_SUCCESS)
{
if (h == NULL) {
printf("Error: unable to create handle for message %d\n",cnt);
cnt++;
continue;
}
printf("message: %d\n",cnt);
/* We need to instruct ecCodes to expand the descriptors
i.e. unpack the data values */
CODES_CHECK(codes_set_long(h,"unpack",1),0);
/* In what follows we rely on the fact that for
* temperature significant levels the value of key
* verticalSoundingSignificance is 4 (see flag table 8001 for details).
*
* In our BUFR message verticalSoundingSignificance is always followed by
* geopotential, airTemperature, dewpointTemperature,
* windDirection, windSpeed and pressure.
* So in order to access any of these keys we need to use the
* condition: verticalSoundingSignificance=4.
*/
/* Get the number of the temperature significant levels.*/
/* We find out the number of temperature significant levels by
* counting how many pressure values we have on these levels.*/
sprintf(key_name,"/verticalSoundingSignificance=4/pressure");
CODES_CHECK(codes_get_size(h,key_name,&sigt_len),0);
printf("Number of T significant levels: %ld\n",sigt_len);
/* Allocate memory for the values to be read. Each
* parameter must have the same number of values. */
sigt_pres = (double*)malloc(sigt_len*sizeof(double));
sigt_geo = (double*)malloc(sigt_len*sizeof(double));
sigt_t = (double*)malloc(sigt_len*sizeof(double));
sigt_td = (double*)malloc(sigt_len*sizeof(double));
/* Get pressure */
sprintf(key_name,"/verticalSoundingSignificance=4/pressure");
/* Get the values */
len=sigt_len;
CODES_CHECK(codes_get_double_array(h,key_name,sigt_pres,&len),0);
/* Get geopotential */
sprintf(key_name,"/verticalSoundingSignificance=4/nonCoordinateGeopotential");
/* Check the size*/
CODES_CHECK(codes_get_size(h,key_name,&len),0);
if(len != sigt_len)
{
printf("inconsistent number of geopotential values found!\n");
return 1;
}
/* Get the values */
CODES_CHECK(codes_get_double_array(h,key_name,sigt_geo,&len),0);
/* Get temperature */
sprintf(key_name,"/verticalSoundingSignificance=4/airTemperature");
/* Check the size*/
if(len != sigt_len)
{
printf("inconsistent number of temperature values found!\n");
return 1;
}
/* Get the values */
CODES_CHECK(codes_get_double_array(h,key_name,sigt_t,&len),0);
/* Get dew point */
sprintf(key_name,"/verticalSoundingSignificance=4/dewpointTemperature");
/* Check the size*/
if(len != sigt_len)
{
printf("inconsistent number of dewpoint temperature values found!\n");
return 1;
}
/* Get the values */
CODES_CHECK(codes_get_double_array(h,key_name,sigt_td,&len),0);
/* Print the values */
printf("lev pres geo t td\n");
printf("-------------------------------\n");
for(i=0; i < sigt_len; i++)
{
printf("%3ld %6.0f %6.0f %.1f %.1f\n",
i+1,sigt_pres[i],sigt_geo[i],sigt_t[i],sigt_td[i]);
}
/* Delete handle */
codes_handle_delete(h);
/* Release memory */
free(sigt_pres);
free(sigt_geo);
free(sigt_t);
free(sigt_td);
cnt++;
}
fclose(in);
return 0;
}
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