#FACET WRAP LABELLER HOW TO#
#FACET WRAP LABELLER SERIES#

If a plot already has a title, subtitle, caption, etc., and you want to remove it, you can do so by setting the respective argument to NULL. If you're changing other scale options, this is recommended. You can also set axis and legend labels in the individual scales (using the first argument, the name).

If 'x', the top labels will be displayed to the bottom.Įxample: Renaming Labels of ggplot2 Facet Plot Using levels () Function The following code illustrates how to replace facet labels of a ggplot2 graph by changing the factor levels of our grouping column. As of ggplot2 2.0, the switch argument will do this for facet_grid or facet_wrap: By default, the labels are displayed on the top and right of the plot. The labeller function label_both is used.Īn answer for those searching in 2016. In the following R code, facets are labelled by combining the name of the grouping variable with group levels.

Ggplot2 change strip labelsĬhange the text of facet labels Facet labels can be modified using the option labeller, which should be a function. It is most useful when you have two discrete variables, and all combinations of the variables exist in the data. For compatibility with labeller (), each labeller function must have the labeller S3 class.įacet_grid() forms a matrix of panels defined by row and column faceting variables. The facet attribute also provides metadata on the labels. If you have only one variable with many levels, try facet_wrap(). # However, in facet_grid we can't specify the columns and rows.Facet_grid() forms a matrix of panels defined by row and column faceting variables. # We can change the labels, but doing so requires us to # Problem: we want more descriptive labels without changing column names. P1 <- ggplot(mydf, aes(y = value, x = date, group = variable)) +

# and the rows and this works just fine, we have a little block

# Plot using facet wrap - we want to specify the columns Mydf <- ame(date = seq(as.Date(''), by = 'day', length.out = myrows), In real life I am dealing with multiple groups each containing dozens of data series, each of which changes frequently, so any solution would have to be automated rather than relying on manually assigning values. How can I change the facet labels when using facet_wrap without changing the column names? Alternatively, how can I specify the number of columns and rows when using facet_grid?Ĭode for a simplified example follows. I can use facet_grid so that I can take advantage of the labeller function but then there seems to be no straightforward way to specify the number of columns and a long row of facets just doesn't work for this particular task. The names of the columns in the data frame are short and I want to keep them that way, but I want the labels in the facets to be more descriptive. The problem is that I don't have adequate control over the labels in facet strips. A combination of ggplot2 and facet_wrap does what I want, typically resulting a nice little block of 6 x 6 facets.

I have a large number of data series that I want to plot using small multiples.

#FACET WRAP LABELLER HOW TO#

#FACET WRAP LABELLER SERIES#

Facet wrap labeller