A few other graphics packages, including the lattice package, are also built using grid graphics. Grid graphics functions can also be used to create almost any imaginable plot from scratch. In particular, ggplot objects can be added to larger plot output using grid graphics functions, and grid graphics functions can be used to add elements to ggplot objects. The ggplot2 package is built on top of grid graphics, so the grid graphics system “plays well” with ggplot2 objects. For example, if you want to quickly plot a scatterplot of data, you should use ggplot2, but if you want to create a plot with an inset plot with tilted axis labels, then you may need to go to grid graphics. By “low-level,” we mean that grid graphics functions are typically used to modify very specific elements of a plot, rather than being functions to use for a one-line plotting call. Grid graphics is a low-level system for plotting within R and is as a separate system from base R graphics. You can even include mathematical annotation on ggplot objects using ggplot2 functions (see for some examples) and change coordinate systems (for example, a pie chart can be created by using polar coordinates on a barchart geom). For example, as described in previous sections, you can use ggplot2 functions to change the theme of a plot (and you can also change specific elements of the theme for a plot), to customize the colors used within the plot, and to create faceted “small multiple” graphs. 4.7.4 Example: Normal Confidence Intervalsįunctions in the ggplot2 package allow extensive customization of many plotting elements.4.7.2 Example: An Automatic Transparency Geom.4.5.6 Find out more about grid graphics.4.3.5 Where to find more on mapping with R.4.3.4 More advanced mapping – Spatial objects.3.10.1 Web Services for Continuous Integration.3.8.5 Linking local repo to GitHub repo.3.5 Software Testing Framework for R Packages.3.4.3 Common Markdown formatting elements.2.10.2 Compose simple functions with the pipe.2.10 Gaining Your ‘tidyverse’ Citizenship.2.5.3 When to generate errors or warnings.2.3.2 Core Functional Programming Functions.1.10.1 How to Google Your Way Out of a Jam.1.8.1 Back of the Envelope Calculations.1.7 Text Processing and Regular Expressions.1.6.2 Pulling out date and time elements.1.6.1 Converting to a date or date-time class.1.6 Working with Dates, Times, Time Zones.1.5.4 Adding, changing, or renaming columns.1.4.2 Requesting data through a web API.1.3 Reading Tabular Data with the readr Package.
0 Comments
Leave a Reply. |