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I’m doing a chart of an 84-month time series, but I wanted to change the scale of the x-axis for every 6 months to facilitate interpretation, but I cannot.
notif <- ts(not)
plot(notif, col=2, xlab="Tempo (meses)")
To try to change the x-axis scale I entered the following code:
plot(notif, col=2, xlab="Tempo (meses)", axis(1, seq(1, 84, 6)))
Give me the following message:
Error in xy.coords(x, y, xlabel, ylabel, log) : 'x' and 'y' lengths differ
What I’m doing wrong?
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Two things:
If all you care about is the number of months and not the dates themselves, you don’t have to convert to ts. As a time series, you will not be able to define the intervals using integer sequence.
axis goes off the plot. First create a chart without the axes, then add them manually.
As you have not provided an example of your data, I am using the database ldeaths, included in the R.
not <- as.vector(ldeaths)
plot(not, type = "l", col = 2, xlab = "Tempo (meses)", axes = FALSE)
axis(1, seq(1, length(not), 6))
axis(2)
box()
If you need dates, a good option to easily control the display is to use ggplot2 together with the package ggfortify:
library(ggplot2)
library(ggfortify)
autoplot(ldeaths, colour = "red") +
scale_x_date(date_labels = "%b/%y", breaks = "6 months") +
theme_classic()
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