Reading Multiple CSV in R and Plotting With ggplot2

Question

I'm fairly new to R and am trying to learn how to do some plotting with it. I managed to read in multiple csv files I have from some code analysis (7 of them), and melt them together as shown in the picture, but I'm not sure what I need to do to plot it correctly. The graph is giving me one combined line instead of multiple. How do I fix this? The line I ran to plot the graph is shown in the image, but in case it's too small I ran ggplot(melted, aes(data_size, time_ms, colour=L1)) + geom_line()

Thanks in advance!

I'm not very familiar with R myself, but isn't melting your issue? That is combining the CSVs into a single data stream, hence the one graph. — Sienile
– Sienile, Commented Feb 19, 2017 at 6:16
add group = L1 as aesthetic, or make it a discrete variable with colour = as.factor(L1) — baptiste
– baptiste, Commented Feb 19, 2017 at 6:17

Niels Lindgren · Accepted Answer · 2017-02-19 06:16:06Z

1

If you check the class of your L1 column, it's going to come back as "numeric". If you'd like to have all of the lines in the same space, ggplot(melted, aes(data_size, time_ms)) + geom_line(aes(colour = factor(L1))) will do the trick.

answered Feb 19, 2017 at 6:16

Niels Lindgren

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1 Comment

Kofu Over a year ago

Thank you SO MUCH!

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