GHCNDSetup Namespace Reference

Builds SQLite3/Spatialite database needed for querying NCDC Global Historical Climatology Network station metadata downloaded from http://www1.ncdc.noaa.gov/pub/data/ghcn/daily/ghcnd-stations.txt. More...

Variables
string	_sanitizeString = '[\'";]'
tuple	SRS = int(4326)
string	DB_NAME = 'GHCND.spatialite'
string	URL = 'http://www1.ncdc.noaa.gov/pub/data/ghcn/daily/ghcnd-stations.txt'
tuple	parser = argparse.ArgumentParser(description='Build database of GHCN station metadata')
string	help = 'Directory to which database named "GHCND.sqlite" should be placed'
tuple	args = parser.parse_args()
tuple	ghcnDB = os.path.join(args.outputDir, DB_NAME)
	url = URL
tuple	conn = spatialite.connect(ghcnDB)
tuple	cursor = conn.cursor()
tuple	hasSpatial = cursor.fetchone()
tuple	f = urllib.urlopen(url)
tuple	line = f.readline()
tuple	id = unicode(line[:11].strip(), errors='replace')
tuple	lat = float(line[12:19].strip())
tuple	lon = float(line[21:29].strip())
tuple	elev = float(line[31:36].strip())
tuple	name = unicode(line[41:70].strip(), errors='replace')
string	sql = u"INSERT INTO ghcn_station (id,name,elevation_m,coord) VALUES ('%s','%s',%f,GeomFromText('POINT(%f %f)', %d) )"

Detailed Description

Builds SQLite3/Spatialite database needed for querying NCDC Global Historical Climatology Network station metadata downloaded from http://www1.ncdc.noaa.gov/pub/data/ghcn/daily/ghcnd-stations.txt.

This database is indexed to allow fast spatial queries of station information.

Note

Requires pyspatialite 3.0.1.

This software is provided free of charge under the New BSD License. Please see the following license information:

Copyright (c) 2013, University of North Carolina at Chapel Hill All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of the University of North Carolina at Chapel Hill nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Author

Brian Miles brian.nosp@m._mil.nosp@m.es@un.nosp@m.c.ed.nosp@m.u

Usage:

GHCNDSetup.py -o <output_dir>

Variable Documentation

string GHCNDSetup._sanitizeString = '[\'";]'

tuple GHCNDSetup.args = parser.parse_args()

tuple GHCNDSetup.conn = spatialite.connect(ghcnDB)

tuple GHCNDSetup.cursor = conn.cursor()

string GHCNDSetup.DB_NAME = 'GHCND.spatialite'

tuple GHCNDSetup.elev = float(line[31:36].strip())

tuple GHCNDSetup.f = urllib.urlopen(url)

tuple GHCNDSetup.ghcnDB = os.path.join(args.outputDir, DB_NAME)

tuple GHCNDSetup.hasSpatial = cursor.fetchone()

string GHCNDSetup.help = 'Directory to which database named "GHCND.sqlite" should be placed'

tuple GHCNDSetup.id = unicode(line[:11].strip(), errors='replace')

tuple GHCNDSetup.lat = float(line[12:19].strip())

tuple GHCNDSetup.line = f.readline()

tuple GHCNDSetup.lon = float(line[21:29].strip())

tuple GHCNDSetup.name = unicode(line[41:70].strip(), errors='replace')

tuple GHCNDSetup.parser = argparse.ArgumentParser(description='Build database of GHCN station metadata')

string GHCNDSetup.sql = u"INSERT INTO ghcn_station (id,name,elevation_m,coord) VALUES ('%s','%s',%f,GeomFromText('POINT(%f %f)', %d) )"

tuple GHCNDSetup.SRS = int(4326)

string GHCNDSetup.URL = 'http://www1.ncdc.noaa.gov/pub/data/ghcn/daily/ghcnd-stations.txt'

GHCNDSetup.url = URL