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The time required to knit depends on the length and complexity of the script and the size of your data. It allows you to see what your outputs look like and also to test that your code runs without errors. When To Knit: Knitting is a useful exercise throughout your scientific workflow. The knitr package was designed to be a transparent engine for dynamic report generation with R – Yihui Xi – knitr package creator Efficiently change code outputs (figures, files) given changes in the data, methods, etc.Document our workflow to facilitate reproducibility.Create professional reports that document our workflow and results directly from our code, reducing the risk of accidental copy and paste or transcription errors.Publish & share preliminary results with collaborators.Knitr is the R package that we use to convert an R Markdown document into another, more user friendly format like. rmarkdown: install.packages("rmarkdown").You will also need an R Markdown document that contains a YAML header, code chunks and markdown segments. You will need the most current version of R and, preferably, RStudio loaded on your computer to complete this tutorial. Know how to modify chuck options to change what is rendered and not rendered on the output html file.