#R plot rename x lab code#

Required Packages: FSAdata, FSA, dplyr, captioner, knitr and their dependencies (assertthat, car, DBI, digest, evaluate, formatR, gdata, gplots, graphics, grDevices, highr, Hmisc, lazyeval, magrittr, markdown, methods, plotrix, plyr, R6, Rcpp, sciplot, stats, stringr, tools, utils, yaml).Base Packages: base, datasets, graphics, grDevices, methods, stats, utils.> mtext('Fork Length (mm)',side=2,line=0,outer=TRUE,cex=1.3,las=0)įigure 2: Grid of plots that uses the outer margin area to provide common axis labels.

#R plot rename x lab code#

The code below adds common x- and y-axis labels to the plots constructed above.

This is only needed because las=1 was set globally for producing this supplement. Further note that las=0 is used for the y-axis label to force the text to be parallel to the y-axis. In this capacity, mtext() requires the text to be written as the first argument, a number in side= that indicates the margin on which to print the text (note that the side= argument in mtext() uses the same numbering scheme as other functions – 1=bottom, 2=left, 3=top, 4=right), a number in line= that indicates the line on which to print the text (defaults to 0), and outer=TRUE to force the text into the outer margin area. The common x- and y-axis labels are then placed in the outer margin areas with mtext(). The four subplot areas are then populated with scatterplots (note that the x- and y-axis labels are set to empty strings to suppress labeling the axes) > xlmts ylmts BTH1 % filterD(lake='Harrison',era='1977-80') In the example below, a 2-by-2 grid is created with mfrow() (as described in the IFAR book) and the bottom and left outer margin areas are increased to be three “lines” wide to allow for common x- and y-axis labels. For example, margins that are two “lines” wide on the top and bottom and one “line” wide on the left and right may be set with par(oma=c(2,1,2,1)).įigure 1: Schematic plot that illustrates the plotting area (inside the blue box), the figure area (inside the red box), and the outer margin area (between the dark gray and red boxes).Ĭommon axis labels for multiple graphs can be placed in the outer margin area. The size of the outer margin area is set with oma= in par(), which takes a vector of four values to serve as widths of the four sides of the outer margin area, beginning with the bottom and moving counter-clockwise. In most instances (and the default), the width of the outer margin area is 0 on all sides of the figure area such that no outer margin area exists. The area outside of the figure area is the outer margin area and is generally used to provide extra space around the graphic or to place text. The area between the plot area and the figure area is where the axis ticks, labels, and title will appear. The plot area is where the points or bars will be graphed.

This can be accomplished with arguments to par(), but the regions of a plot must be undersood first (the following description is modified from here).Įach plot consists of three regions – the plot area, the figure area, and the outer margin area (Figure 1). A common need is to plot multiple graphics in a grid-like format with one axis label that serves as the label for each graph.