Null) 4 Residual #> Null Deviance: 10.58 #> Residual Deviance: 5.129 AIC: 56.76 summary( glm_1) # From ?glm # Dobson (1990) : Randomized Controlled Trial : ad #> Call: glm(formula = counts ~ outcome + treatment, family = poisson(), #> data = ad) #> #> Coefficients: #> (Intercept) outcome2 outcome3 treatment2 treatment3 #> 3.045e+00 -4.543e-01 -2.930e-01 1.338e-15 1.421e-15 #> #> Degrees of Freedom: 8 Total (i.e. Just load the package (and perhaps also ‘data.io’, or even the whole SciViews::R suite): So, the new generic function form() creates formatted tables or other objects (lists, …) to be directly integrated in an R Markdown document, or to be used at the R Console. Moreover, none of kable() or pander() functions allow for the translation of the result in a different language, and they also do not take into account attributes like label or units (see the ‘data.io’ package). However, the syntax is not always easy, and code eventually differ depending on the situation among the four possible ones here above. In a knitted R markdown file, HTML format,īoth ‘knitr’ with kable(), and the ‘kableExtra’ functions, and ‘pander’ with the pander() functions do that.Inside an R Markdown/Notebook inline area just beneath a chunk,.Here, we reuse existing functions like knitr::kable() or pander::pander(), but we make them simpler to use and working in all cases being: For a more information about all the different symbols you can use, google ‘LaTeX math symbols’.Among the ‘SciViews’ R packages, ‘form.io’ would be devoted to the input and especially output of textual data (input of tabular data being managed by ‘data.io’). Unfortunately RMarkdown is a little picky about spaces near the $ and $$ signs and you can’t have any spaces between them and the LaTeX command. If you want your mathematical equation to be on its own line, all by itself, enclose it with double dollar signs. So you might write $\alpha=0.05$ in your text, but after it is knitted to a pdf, html, or Word, you’ll see \(\alpha=0.05\). Within your RMarkdown document, you can include LaTeX code by enclosing it with dollar signs. Some examples of common LaTeX patterns are given below: Goal However, you can get most of what you need pretty easily.įor RMarkdown to recognize you are writing math using LaTeX, you need to enclose the LaTeX with dollar signs ($). The downside is that there is a lot to learn. This is a very powerful system and it is what most Mathematicians use to write their documents. The primary way to insert a mathematical expression is to use a markup language called LaTeX. While you could print out your RMarkdown file and then clean it up in MS Word, sometimes there is a good to want as nice a starting point as possible. Most of what is presented here isn’t primarily about how to use R, but rather how to work with tools in RMarkdown so that the final product is neat and tidy. Two topics that aren’t covered in the RStudio help files are how to insert mathematical text symbols and how to produce decent looking tables without too much fuss. I particular like Help -> Cheatsheets -> RMarkdown Reference Guide because it gives me the standard Markdown information but also a bunch of information about the options I can use to customize the behavior of individual R code chunks. There are many resources on the web about Markdown and the variant that RStudio uses (called RMarkdown), but the easiest reference is to just use the RStudio help tab to access the help. We have been using RMarkdown files to combine the analysis and discussion into one nice document that contains all the analysis steps so that your research is reproducible. 16.3 R functions to produce table code.13.3.4 Splitting into substrings using str_split().13.3.3 Replacing substrings using str_replace().13.3.2 Locating a pattern using str_locate().13.3.1 Detecting a pattern using str_detect().13.2.3 Extracting substrings with str_sub().13.2.2 Calculating string length with str_length().13.2.1 Concatenating with str_c() or str_join().
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