CODEWITHSUNDEEP
rplot
Henri Plana
Henri Plana

Reputation: 67

Multiple plots in a page with R

I have a problem. I want to arrange 7 plots in a single page: 3 plots in a top line, 2 plots below and 2 other below. I could'nt make it work with layout(matrix=)) (I think because the top line has an odd number of plots). I have used aplot and image.plot to make the plots. Thanks. Henri

Upvotes: 0

Views: 845

Answers (2)

r2evans
r2evans

Reputation: 160447

layout can absolutely do an odd number of plots on the top. You just need to think of more than 1 image per matrix element. Since you want 3 across the top and 2 across the other rows, then the lowest common multiple is 6. Make a layout with 6 columns.

m <- matrix(c(1,1,2,2,3,3,
              4,4,4,5,5,5,
              6,6,6,7,7,7), ncol = 6, byrow = TRUE)
layout(m)
layout.show(7)

layout grid

FYI, this works equally well for rows as columns. The only strict "requirements" using layout are that all elements must be non-NA, non-negative, contiguous numbers (no numbers can be skipped). "0" means to skip a cell (a "hole" in the plot). Negatives are ignored, NAs are errors. It does not return an error if a set of plot numbers is not rectangular, but I won't guarantee that it'll always look like you want.

Upvotes: 2

Brigadeiro
Brigadeiro

Reputation: 2945

If you are using ggplot, you might also consider using the patchwork package for this to make it easy. For example:

Step 1: Create all your figures and assign them to objects (e.g., fig1, fig2 etc.). For example:

fig1 <- ggplot(data = myData, mapping = aes(x = x, y = y) +
    geom_point()

#...etc.

Step 2: To create the layout to specified:

library(patchwork)
(fig1 + fig2 + fig3) / (fig4 + fig5) / (fig6 + fig7)

Upvotes: 1

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