An R package to interface with the data management system HIEv at the Hawkesbury Institute for the Environment.
To use the HIEv R package, you must already have an active HIEv account. Contact Gerry Devine for questions about HIEv in general (email@example.com)
Brief instructions are provided below. For a more comprehensive walkthrough, continue reading here.
To install the package, use the
devtools package as follows. Windows users must have Rtools installed (http://cran.r-project.org/bin/windows/Rtools/)
library(devtools) install_bitbucket("remkoduursma/HIEv") library(HIEv)
Next, you must set up the API token. The token can be stored in a file called
c:/hiev/token.txt, or set in the R session (you only have to do this once per R session, the token is stored in a global variable)
To perform a search, take a look at
ring3 <- searchHIEv(filename="FACE_R3")
This will find all files that contain 'FACE_R3'. Regular expressions are allowed here as well (most of them work anyway). The object
ring3 is a dataframe containing lots of information returned by the HIEv API.
You can also search for filenames that contain FACE and PAR and 2014, by supplying a vector:
facepar2014 <- searchHIEv(filename=c("FACE","PAR","2014"))
This will find filenames that contain those terms (in any order). See
?searchHIEv for more options (especially
exclude to exclude filenames that contain certain keywords).
Now we can download one or many files from the above search result, which we called ring3.
Will download the 1st, 5th and 10th record found in the search.
downloadTOA5 function is for convenience. It can find TOA5-style data, given a search query which includes start and end dates, and coerces all resulting files into a dataframe.
So, for example,
dat <- downloadTOA5(filename="ROS_3_Table2", startDate="2013-5-1")
will download data from ROS plot 3, and only keep data after the 1st of May 2013. In this case, it combines three files automatically.