ggplot2 confusion

Question

Hi can anyone tell me whats wrong with following R code?

ggplot(train, aes(x= Item_Visibility, y = Item_Outlet_Sales)) + 
geom_point(size = 2.5, color="navy") + 
xlab("Item Visibility") + 
ylab("Item Outlet Sales") + 
ggtitle("Item Visibility vs Item Outlet Sales")

train <- read.csv("Train_UWu5bXk.csv") test<- read.csv("Test_u94Q5KV.csv") — bluemountains1979, Jun 30 '17 at 05:08
Use dput() and read https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example — Edgar Santos, Jun 30 '17 at 05:25
`train <- read.csv("Train_UWu5bXk.csv")` and then `dput(train)` — AK88, Jun 30 '17 at 05:25
Also please decribe what "not working" means. Do you get an error message? A warning? What does it say? Does the code seem to run but there is not plot? Or does it produce a plot that is somehow different than you expect? — Gregor Thomas, Jun 30 '17 at 05:31
In addition to the link ed_sans shared, you should probably read [How to ask a good question](https://stackoverflow.com/help/mcve) to get the hang of using this site. — Gregor Thomas, Jun 30 '17 at 05:32
> + geom_point(size = 2.5, color="navy") Error in +geom_point(size = 2.5, color = "navy") : invalid argument to unary operator > + xlab("Item Visibility") Error in +xlab("Item Visibility") : invalid argument to unary operator > + ylab("Item Outlet Sales") + ggtitle("Item Visibility vs Item Outlet Sales") Error in +ylab("Item Outlet Sales") : invalid argument to unary operator — bluemountains1979, Jun 30 '17 at 05:37
The error message says `Error in +geom_point(size = 2.5, color = "navy")`. Appararently, this line starts with a `+`. Make sure to put the `+` at the end of the previous line. Otherwise, R assumes that the `ggplot(...` line is complete and does not recognize that the next line is meant as a continuation line. — Uwe, Jun 30 '17 at 08:27

gatsky · Accepted Answer · 2017-06-30T07:21:09.543

0

There is nothing wrong that I can see. Your code works. Some times such errors arise due to not flowing the ggplot expression properly. Try it like this:

ggplot(train, aes(x= Item_Visibility, y = Item_Outlet_Sales)) + geom_point(size = 2.5, color="navy") + xlab("Item Visibility") + ylab("Item Outlet Sales") + ggtitle("Item Visibility vs Item Outlet Sales")

Assuming you got the data from https://github.com/hannarud/r-plotting/blob/master/Train_UWu5bXk.csv

edited Jun 30 '17 at 07:21

answered Jun 30 '17 at 06:52

gatsky

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No problems. In future, please heed the advice about posting good questions in the other comments above. Also, pasting the error message from R into a search engine often gives you the answer right away! Have a read of this as well: https://www.r-project.org/help.html – gatsky Jul 02 '17 at 06:35

ggplot2 confusion

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