Images will be scaled automatically to fit the slide, and if the automatic size does not work well, you may manually control the image sizes: for static images included via the Markdown syntax !(), you may use the width and/or height attributes in a pair of curly braces after the image, e.g., !(foo.png) for images generated dynamically from R code chunks, you can use the chunk options fig.width and fig.height to control the sizes. When you have a text paragraph and an image on the same slide, the image will be moved to a new slide automatically. The only elements that can coexist with an image or table on a slide are the slide header and image/table caption. The R code here grabs the current days date, and outputs it as the day, three letter month, and year (if it is. For the date, it is possible to execute R code directly in the metadata block to set it automatically. There are 12 additional themes that you can use without installing any other packages: cerulean, cosmo, flatly, journal, lumen, paper, readable, sandstone, simplex, spacelab, united, and yeti. Please note that images and tables will always be placed on new slides. In the example above, title, subtitle, and author should all be fairly straightforward. There are several other canned themes you can use rather than the default theme. Shiny components and htmlwidgets will work in any HTML based output, such as a file, slide show or dashboard. Embed htmlwidgets such as dygraphs and datatables directly into your reports. Add interactive graphics with htmlwidgets, such as the leaflet map widget. You can generate most elements supported by Pandoc’s Markdown (Section 2.5) in PowerPoint output, such as bold/italic text, footnotes, bullets, LaTeX math expressions, images, and tables, etc. Combine R Markdown with htmlwidgets or the shiny package to make interactive documents. The draft function creates new R Markdown documents based on templates that are either located on the filesystem or within an R package. You can also start a new slide without a header using a horizontal rule. Similarly, any package may include R Markdown templates that package users can access through the RStudio IDE (as shown in the figure) or across any platform with the rmarkdown::draft () function. The LaTeX class 'report' provides a suitable format for that. The default slide level (i.e., the heading level that defines individual slides) is determined in the same way as in Beamer slides (Section 4.3.2), and you can specify an explicit level via the slide_level option under powerpoint_presentation. This R Markdown file is pre-populated with the appropriate metadata for an R package vignette. It would be useful to have a RMarkdown template for typical (academic) reports such as class assignments and bachelor/master thesises. 19.7 Output arguments for render functionsįIGURE 4.5: A sample slide in a PowerPoint presentation.16.5.4 Create a widget without an R package.2.1.4 2017 Employer Health Benefits Survey.
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