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csv() as well as the read. csv2() function are almost identical to the read. table() function, with the sole difference that they have the header and fill arguments set as TRUE by default. Tip: if you want to learn more about the arguments that you can use in the read.
Go to the Files tab in RStudio (lower right). Click Upload and browse to select the file you created. Then, use the read. csv() function to read in the file.
knitr is an engine for dynamic report generation with R. It is a package in the programming language R that enables integration of R code into LaTeX, LyX, HTML, Markdown, AsciiDoc, and reStructuredText documents. The purpose of knitr is to allow reproducible research in R through the means of literate programming.
R Markdown (markup language)R Markdown files are plain text files that typically have the file extension . Rmd . They are written using an extension of markdown syntax that enables R code to be embedded in them in a way which can later be executed.
The short answer is:
KNOW THY
getwd()
Do not confuse the working directory of your current R console with the working directory of your R Markdown document (which is the directory of this R Markdown document). When in doubt, print out getwd() where you want to know your working directory (e.g. in *.Rmd). Note R Markdown documents are compiled in separate R sessions to enhance reproducibility, so you current R console has nothing to do with the compilation of the R Markdown documents.
Your current RMD file is not in your current working directory
Just try and place all your data file where your Markdown (.Rmd) file resides.
Mine is a silly case, but may happen to someone else... the Rmd had been saved to my default working directory not the current working directory where I thought I was. I had a long list of files and didn't realize the script was not there. Worth to check!
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