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In R studio, I entered the following code:
summary(chickwts)
attach (chickwts)
barplot(chickwts$weight,main="Individual Weights,ylab="Weight")
Am using R 4.2.2 for Windows in R Studio environment. Code was from a course in TGC called "Learning Statistics, Concepts and Applications in R". Error message says comma the problem but this is the code that the course give. Am not sure how to proceed to get the barplot.
Any help appreciated.
I used the code the course gave, and it didn't work.
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Closed 2 years ago.
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Can anyone point me in the right direction for getting around this error? I'm new to creating packages and am currently following Hadley Wickham's guide.
http://r-pkgs.had.co.nz/description.html
To copy the comments of #zx8754, use_package is now part of the usethis package. And per the comment from #MichaelChirico, Hadley's book is updated on github, but has not yet been re-published.
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Closed 5 years ago.
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Bit of a newbie for R, R Studio and Markdown but I am trying to use the render() function on my Rmd file and I get the following error:
Error: could not find function "render"
If I try to use the following I get this error:
markdown::render("MarkdownExample.Rmd")
Error: 'render' is not an exported object from 'namespace:markdown'
Still yesterday I could use the render fonction without any problem. Would anyone know what to do?
Thanks in advance
Shouldn't it be rmarkdown::render?
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Closed 6 years ago.
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Im taking an R programming class that is using the package "matplot" for a demo. I cant find "matplot" in CRAN so i'm assuming it has been replaced/deleted/changed. Is there another package that replaced it?
There is a matplot function within the graphics library. Here's an example from the documentation:
require(grDevices)
matplot((-4:5)^2, main = "Quadratic")
Also, matplot is a plotting library for PHP. Perhaps your instructor could help clarify what is expected.
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In running a knitr report I noticed that ggplot2 produces a graph without y-ticks/labels on Windows, but does on my Linux/Rstudio install.
The following codes shows the issue for me.
df=data.frame(pos=seq(1,10),data=seq(10,1,-1))
ggplot(data=df, aes(x=pos,y=data))+
scale_y_discrete(breaks=seq(1,10,2))+
geom_line()
Here are the graphs that I get:
Windows
Linux
The breaks show if I remove the scale_y_discrete function call, however I need it for formatting my output.
Is this an environmental issue? A configuration issue?
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Closed 7 years ago.
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I am returning to some old code where I had used the following syntax:
y[df$myvar %between% c(1,100)]
but get the error
could not find function "%between%"
This code used to work, and I have updated R in the mean time. any thoughts?
As Pascal pointed out, you should load the package data.table first:
library(data.table)
Then you'll be able to use it.