CODEWITHSUNDEEP
rggplot2
user2714356
user2714356

Reputation: 1

Easy way to view multiple Y variables against same X

I want to visualize many time series at once. I am new at R, and have spent about 6 hours searching the web and reading about how to tackle this relatively simple problem. My dataset has five time points arranged as rows, and 100 columns. I can easily plot any column against the time points with qplot(time, var2, geom="line"). But I want to learn how to do this for a flexible number of columns, and how to print 6 to 12 of the individual graphs on one page.

Here I learned about the multiplot function, got that to work in terms of layout.

What I am stuck on is how for get the list of variables into a FOR statement so I can have one statement to plot all the variables against the same five time points.

this is what I am playing with. It makes 9 plots, 3 columns wide, but I do not know how to get all my variables into the array for yvars?

for (i in 1:9) {
         p1 = qplot(symbol,yvar, geom ="smooth", main = i))
         plots[[i]] <- p1  # add each plot into plot list
     }
multiplot(plotlist = plots, cols = 3)

Stupidly on my part right now it makes 9 identical plots. So how do I create the list so the above will cycle through all my columns and make those plots?

Upvotes: 0

Views: 94

Answers (1)

americo
americo

Reputation: 1063

first melt all your data using the reshape2 package

datm <- melt(your.original.data.frame, id = "time")

Now plot it using facets:

qplot(time, value, data = datm, facets= variable ~ ., geom="point")

Let me know if this works. If you could, please upload your data, it would help tremendously.

Upvotes: 1

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