Plot data in ggplot2

[Eric_Nakoh]

I want to plot the data below as a single plot in ggplot2. time_s on x-axis, dS2_mV and oS2_mV on the primary y-axis and dS2_mr_cs oS2_mr_cs on the secondary y-axis. Any help will be appreciated. Thanks
time_s dS2_mV oS2_mV dS2_mr_cs oS2_mr_cs

1 0 211. 421. 1.08 -12.7
2 0.5 211. 421. 2.16 -25.4
3 1 212. 421. 3.47 -37.9
4 1.5 211. 421. 4.55 -50.7
5 2 212. 421. 5.86 -63.6
6 2.5 212. 421. 7.39 -76.5
7 3 212. 421. 8.70 -89.5
8 3.5 212. 421. 10.2 -102.
9 4 212. 421. 12.0 -115.
10 4.5 212. 421. 13.8 -127.

[williaml]

Hi, here is a reproducible version of your data.

df <- tibble::tribble(
  ~time_s, ~dS2_mV, ~oS2_mV, ~dS2_mr_cs, ~oS2_mr_cs,
        0,    211L,    421L,       1.08,      -12.7,
      0.5,    211L,    421L,       2.16,      -25.4,
        1,    212L,    421L,       3.47,      -37.9,
      1.5,    211L,    421L,       4.55,      -50.7,
        2,    212L,    421L,       5.86,      -63.6,
      2.5,    212L,    421L,       7.39,      -76.5,
        3,    212L,    421L,        8.7,      -89.5,
      3.5,    212L,    421L,       10.2,       -102,
        4,    212L,    421L,         12,       -115,
      4.5,    212L,    421L,       13.8,       -127
  )

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

Here are some examples, though whether secondary axes are a good thing is up to you:

Dual axis charts in ggplot2 - why they can be useful and how to make them | Data By John (johnmackintosh.net)

Creating A Dual-Axis Plot using R and ggplot (finchstudio.io)