knitr::opts_chunk$set( collapse = TRUE, comment = "#>" )
This package serves to read, tidy, aggregate and analyze the truck drivers' data in the project GOALI/Collaborative Research: Human Maintenance - A Prognostics Framework to Model Changes in Drivers' Safety Performance and Optimize Dispatching Policies funded by National Science Foundation.
This read data part includes two functions: read_all_csv()
and read_all_excel()
which import ALL Comma-separated Values(.csv) file or Microsoft Excel files(.xlsx & .xls) in the assigned folder.
Let's assume there are three files (A.csv, B.csv, C.csv) in the path C:\\data
.
all_csv = read_all_csv("C:\\data")
The above code should read all .csv & .csv files into the list "all_csv". You can access each data.frame by all_csv[["A"]], all_csv[["B"]], and all_csv[["C"]]. If the parameter "add_variable" in read_all_csv()
is set as TRUE, an extra variable "file_name" will be added to each data.frame in the output list.
In the same way, let's assume there are three files (A.xlsx, B.xlsx, C.xls) in the path C:\\data
.
all_excel = read_all_excel("C:\\data")
The above code should read all .xlsx & .xls files into the list "all_excel". You can access each data.frame by all_excel[["A"]], all_excel[["B"]], and all_excel[["C"]]. If the parameter "add_variable" is set as TRUE, an extra variable "file_name" will be added to each data.frame in the output list.
There are also two function for tidying the truck driver's data: segment0()
& tidy_data()
.
The following contents are from the Vignette templates, which are used as a reference.
The figure sizes have been customised so that you can easily put two images side-by-side.
plot(1:10) plot(10:1)
You can enable figure captions by fig_caption: yes
in YAML:
output: rmarkdown::html_vignette: fig_caption: yes
Then you can use the chunk option fig.cap = "Your figure caption."
in knitr.
You can write math expressions, e.g. $Y = X\beta + \epsilon$, footnotes^[A footnote here.], and tables, e.g. using knitr::kable()
.
knitr::kable(head(mtcars, 10))
Also a quote using >
:
"He who gives up [code] safety for [code] speed deserves neither." (via)
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