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CHCN (version 1.5)
Canadian Historical Climate Network
Description
A compilation of historical through contemporary climate measurements scraped from the Environment Canada Website Including tools for scraping data, creating metadata and formating temperature files.
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Version
Version
1.5
1.4
1.3
1.2
Install
install.packages('CHCN')
Monthly Downloads
57
Version
1.5
License
GPL (>= 2)
Maintainer
Steven Mosher
Last Published
June 8th, 2012
Functions in CHCN (1.5)
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readLocalMaster
A function to read a local copy of the master csv file
writeGhcn
A simple wrapper to
write.table
getMissingScrape
A function to find which scrapes need to be done
createDataset
A function to create a dataset from csv files on disk
writeInventory
Writes inventory data in a format usable by RghcnV3 package
MASTER.STATION.LIST
Name for the local version of the master station list
CHCN-package
A package for Building Historical Climate data for Canada
FORMAT.URL
A string for completing the http request
YEAR.URL
A string for making the http request
STARTING.STATION.ID
The starting unique Id created for these stations
STATION.URL
url for getting master station list
getEmptyCsv
A function to check for empty Csv files
downloadMaster
Download the master list of stations
scrapeToCsv
A function to scrape files to local csv files
createInventory
Creates an inventory of all stations in the directory
formatGhcn
creates a 14 column dataset for output
writeMonthlyStations
Function to read the master list and write a monthly list of stations. This file is critical to the operation of the scraper.
DATA.DIRECTORY
Directory for the final data storage
readMonthlyCsv
reads the csv file that contains all the monthly stations
MONTHLY.STATION.LIST
Name of the local file for Monthly stations
BASE.URL
The "base" elements of the url for scraping
writeData
Writes a file from a dataframe of climate data