Thursday, October 22

R plot two graphs on top of each other

An individual ggplot object contains multiple pieces — axes, plot panel stitles, legends —, and their layout is defined and enforced via the gtable package, itself built around the lower-level grid package. Plots themselves become graphical objectswhich can be arranged on a page using e. The following schematic illustrates the main relations between these packages. Schematic illustration of the links between packages ggplot2gtablegridegg and gridExtra.

The easiest approach to assemble multiple plots on a page is to use the grid. With grid.

R Box Plot

If layout parameters are ommitted altogether, grid. More complex layouts can be achieved by passing specific dimensions widths or heightsor a layout matrix defining the position of each plot in a rectangular grid. Illustrating further arguments of grid. Further examples are available in a dedicated gridExtra vignette.

A special case of layouts is where one of the plots is to be placed within another, typically as an inset of the plot panel.

R-bloggers

In this case, grid. An alternative way to place custom annotations within the plots is to use raw grid commands, which we will present at the end of this document. A common request for presenting multiple plots on a single page is to align the plot panels. Often, facetting the plot solves this issue, with a flexible syntax, and in the true spirit of the Grammar of Graphics that inspired the ggplot2 design. However, in some situations, the various plot panels cannot easily be combined in a unique plot; for instance when using different geoms, or different colour scales.

The following figure illustrates the typical structure of ggplots. Colour-coded structure of examplar ggplot layouts. Note how the panels red vary in size from plot to plot, as they accommodate the other graphical components. As we can readily appreciate, each plot panel stretches or shrinks according to the other plot elements, e.

This often results in misaligned plot panels. In this situation, instead of using grid. In particular, the rbindcbindand join functions can provide a better alignment. The plots must first be converted to grobs more specifically, gtablesusing the ggplotGrob function.

The second step is to bind the two gtables, using the sizes from the first object, then assigning them to the maximum. Finally, the resulting object, a gtable, can be displayed using grid.

r plot two graphs on top of each other

Plots produced by ggplot2including those with facets, and those combined with grid. A convenient approach consists in storing all the plots in a list, and plotting subsets of them on subsequent pages. The gridExtra package can simplify this process with the helper function marrangeGrobsharing a common syntax with grid.

Recent versions of ggplot2 have added built-in options to add a subtitle and a caption; the two stategies are somewhat complementary grid.

When arranging multiple plots, one may wish to share a legend between some of them although in general this is a clear hint that facetting might be a better option. The procedure involves extracting the legend from one graph, creating a custom layout, and inserting the plots and legend in their corresponding cell.When working with graphics in the Wolfram Language, you may want to combine several graphics into a single image. The Wolfram Language can combine graphics by overlaying them or by embedding them together in different orders.

One of the most common ways to combine graphics is by using Show. Set up some graphics to combine, stored in this example as p1p2p3and p4 :. Overlay the graphics by using Show :. Graphics can also be placed together in a row, grid, or column if you do not want to overlay them. Use GraphicsRow to put the graphics in a row:. Use GraphicsGrid to put them in a grid:.

r plot two graphs on top of each other

Use GraphicsColumn to put them in a column:. The graphics options Epilog and Prolog can also be used to combine graphics. They work by embedding graphics together, but differ in the order in which they embed graphics. Epilog works by embedding a graphic on top of another graphic.

Use Epilog as an option within Graphics to embed a point onto a line:. Prolog works by embedding a graphic behind another graphic. Use Prolog as an option to Graphics to embed a point behind a line:. Show and Epilog can also be used with 3D graphics. Make two 3D graphics and combine them using Show :. You can use Epilog to embed a 2D graphic within a 3D graphic. Enable JavaScript to interact with content and submit forms on Wolfram websites.

Learn how. Give Feedback Top.R in Action 2nd ed significantly expands upon this material. R makes it easy to combine multiple plots into one overall graph, using either the par or layout function. The layout function has the form layout mat where mat is a matrix object specifying the location of the N figures to plot. Relative widths are specified with numeric values.

Absolute widths in centimetres are specified with the lcm function. To understand this graph, think of the full graph area as going from 0,0 in the lower left corner to 1,1 in the upper right corner. The top boxplot goes from 0 to 0. I chose 0.

The right hand boxplot goes from 0. Again, I chose a value to pull the right hand boxplot closer to the scatterplot. You have to experiment to get it just right. Try the free first chapter of this interactive data visualization course, which covers combining plots. Kabacoff, Ph. Combining Plots R makes it easy to combine multiple plots into one overall graph, using either the par or layout function.

Creating a figure arrangement with fine control In the following example, two box plots are added to scatterplot to create an enhanced graph. You can use this to combine several plots in any arrangement into one graph.

To Practice Try the free first chapter of this interactive data visualization course, which covers combining plots.One of the most powerful aspects of the R plotting package ggplot2 is the ease with which you can create multi-panel plots. Although creating multi-panel plots with ggplot2 is easy, understanding the difference between methods and some details about the arguments will help you make more effective plots.

This post is designed to provide guidance on the different methods and arguments for facetting in ggplot2. This post assumes a general understanding of ggplot2if you need more details on the basics you can review our cheatsheet on ggplot2 on the topic. We will start by loading the data and applying some cleanup. In particular, we will remove records with missing values for our key variables, shorten the SEX variable and rename the SEX variable name to gender.

Since many of the characters are of limited importance to the franchise, we also filter to characters that have appeared at least times. Throughout the post we will generate counts of characters grouped by year and, in some cases, other grouping variables. For this initial plot we compute simple counts by year. This plot is more informative than the original. This plot shows the ribbon layout for subplots just one plot after another, filling the first row and then moving on to the next sorted by alignment then gender.

The default space between the two labels in the strip tends to be a bit too large for me. This grid layout makes the plots easier to read. It also clearly displays that there are more male marvel characters for each alignment category than all other genders. In this example we exclude the row variable:. In a time series like this it might be more effective to put the two lines on top of each other for easier comparison.

Many arguments work the same for both faceting functions, though there are a few differences. Here is an example of scales using the default fixed axes there is no scales argument in the code below since we are using the default. This can be seen better in the next plot.

Careful though, the user may not notice the different scales and this can lead to misinterpretation. A single function can transform a hard-to-understand one-panel plot into a clearer set of multip-panel plots. Your email address will not be published. Notify me of new posts by email.

We will take advantage of three variables: YEAR: year of first appearance for the character SEX: the sex of the character ALIGN: representing whether the character is good, bad or neutral We will start by loading the data and applying some cleanup. Our first plot: number of character appearances by year Throughout the post we will generate counts of characters grouped by year and, in some cases, other grouping variables.

r plot two graphs on top of each other

First we will create this relatively simple, one-panel plot with lines and points on top. A note on margins between text on the strip The default space between the two labels in the strip tends to be a bit too large for me. Using color instead of faceting In some cases color is more effective than faceting In a time series like this it might be more effective to put the two lines on top of each other for easier comparison.

Notice the additional all facets are added for both rows and columns. Happy plotting! Previous post Convert Procreate illustrations into web-friendly svgs for interaction and animation. Next post Unscientific list of popular R packages for spatial analysis.

One response This has been so helpful!! Thank you!By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

So you'd need to do. You can also use par and plot on the same graph but different axis. Something as follows:. If you read in detail about par in Ryou will be able to generate really interesting graphs. Another book to look at is Paul Murrel's R Graphics. When constructing multilayer plots one should consider ggplot package.

Laying out multiple plots on a page

The idea is to create a graphical object with basic aesthetics and enhance it incrementally. With ggplot you have access to graphical object on every stage of plotting. Say, usual step-by-step setup can look like this:. Further enchantments of the plot are also made with created object. For example, we can add labels for axises:. As pointed out in comments, ggplot 's philosophy suggests using data in long format. You can refer to this answer in order to see the corresponding code.

It scales the Y-axis to fit whichever is bigger y1 or y2unlike some of the other answers here that will clip y2 if it gets bigger than y1 ggplot solutions mostly are okay with this. Alternatively, and if the two lines don't have the same x-coordinates, set the axis limits on the first plot and add:.

Look how messed up the vertical axis labels are! What always confused me about plotting is the difference between curve and lines. If you can't remember that these are the names of the two important plotting commands, just sing it. Behind the scenes, check out methods plot. And check body plot.

When you call plot sin R figures out that sin is a function not y values and uses the plot. So curve is the tool meant to handle functions. As described by redmode, you may plot the two lines in the same graphical device using ggplot. In that answer the data were in a 'wide' format.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Using R, I need to plot 2 curves in the same graph. So, I have to plot x1 vs. Here "x1" are random but known numbers in the range of 0 to 12; "x2" are random but known numbers in the range of 0 to 9; and similarly some other known ranges for y1 and y2. Now the issue is although I am getting the right curve for x1 vs. That is to say, the x-range for x2 vs.

You can use the ggplot2 package, but that requires you to reorder your data into one dataframe, with an extra column specifying categories. Learn more. Plotting 2 curves in the same graph in R Ask Question.

Asked 7 years, 5 months ago. Active 7 years, 5 months ago. Viewed 30k times. Can anybody help solve this? Thank you very much for your support Well, you can just adjust your xlim in your first plot to be the same as the xlim of the second one? Please try and make your question reproducible.

We don't have your data files so you should construct some data that shows the problem you are having. Active Oldest Votes. Consider using points instead. Replace your plot x2, y2, Sign up or log in Sign up using Google. Sign up using Facebook.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Let's say I have two data sets, one with y-range [min0:max0] and the other with y-range [min1:max1]. How can put both box plots in one plot next to each other with a sane y-range [min min0, min1 :max max0, max1 ]? But that will only keep the first plots y-range and also squeeze both plots whereas I'd like them to be square. You may also want to think about a way to do this using grid graphics, either by the lattice or ggplot2 packages. Note how the grid-based solutions keep you from ever having to specify limits; you specify structure and the software does the rest.

Learn more. R: How do I put two box plots next to each other, keeping same y-range for both? Ask Question. Asked 8 years, 11 months ago. Active 5 years, 2 months ago. Viewed 58k times. Any ideas? Your code is not reproducible.

See stackoverflow. Active Oldest Votes. Ari B. Friedman Ari B. Friedman Hmpf, I probably have read over boxplot's ylim argument. Friedman Jul 21 '11 at Err, that's shingles not slices.

R Multiple Plots

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