Learn R -- How to Get Data Frames Columns as Vectors
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this article represents different ways in which one could get a data frame column as a vector. please feel free to comment/suggest if i missed to mention one or more important points. also, sorry for the typos.
4 techniques to get data frame column as vector
in the examples below, diamonds dataset from ggplot2 package is considered. this is how a diamond dataset looks like:
following are four different technique/method using which one could retrieve a data frame column as a vector.
# in the data set shown above, carat represents column name and hence, [['carat']]
carat1 <- diamonds[['carat']]
# in the data set shown above, carat represents 1st column and hence, index 1
carat2 <- diamonds[,1]
# pay attention to usage of dollar $ operator
carat3 <- diamonds$carat
# in the data set shown above, carat represents column name and hence, [, "carat"]
carat4 <- diamonds[,"carat"]
R (programming language)
Data (computing)
Column (database)
Data structure
Frame (networking)
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