I am new to R and trying to plot a graph using the simple plot()
function. So, I wrote this code:
d=read.csv("Nutrition assay example")
head(d)
plot(d$Carbs0~d$EAAs0, typ="p", pch=19, ylab="Carbohydrate (g/bee)", xlab="Amino acids (g/bee)") ) lines(d$Carbs0~d$EAAs0)
lines(d$Carbs1~d$EAAs1, col="red")
points(d$Carbs1~d$EAAs1, col="red", pch=19)
I get this message:
Error in (function (formula, data = NULL, subset = NULL, na.action = na.fail, : invalid type (NULL) for variable 'd$Carbs1'
Any help and suggestions?
You just need to remove the extra parenthesis in your code.
Change this (g/bee)") ) lines
To this code (g/bee)") lines
Complete Code
d=read.csv("Nutrition assay example")
head(d)
plot(d$Carbs0~d$EAAs0, typ="p", pch=19, ylab="Carbohydrate (g/bee)", xlab="Amino acids (g/bee)")
lines(d$Carbs0~d$EAAs0)
lines(d$Carbs1~d$EAAs1, col="red")
points(d$Carbs1~d$EAAs1, col="red", pch=19)
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