r Archives - Page 6 of 18

I saw in a tutorial about regression modeling the following command: myFormula <- Species ~ Sepal.Length + Sepal.Width + Petal.Length + Petal.Width What ...

May 27, 2022
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Label points in geom_point

The data I’m playing with comes from the internet source listed below nba <- read.csv("http://datasets.flowingdata.com/ppg2008.csv", sep=",") What I want to do, is create ...

May 26, 2022
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How do you delete a column by name in data.table?

To get rid of a column named “foo” in a data.frame, I can do: df <- df...

May 26, 2022
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pull out p-values and r-squared from a linear regression

How do you pull out the p-value (for the significance of the coefficient of the single explanatory variable being non-zero) and R-squared value ...

May 26, 2022
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Installing R on Mac – Warning messages: Setting LC_CTYPE failed, using “C”

I would like install R on my laptop Mac OS X version 10.7.3 I downloaded the last version and I double click on ...

May 26, 2022
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Calculating moving average

I’m trying to use R to calculate the moving average over a series of values in a matrix. There doesn’t seem to be ...

May 25, 2022
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Selecting only numeric columns from a data frame

Suppose, you have a data.frame like this: x <- data.frame(v1=1:20,v2=1:20,v3=1:20,v4=letters...

May 25, 2022
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R – Markdown avoiding package loading messages

I have been using Knitr via R-Studio, and think it is pretty neat. I have a minor issue though. When I source a ...

May 25, 2022
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