R - Array

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An array is an array of n dimensions with the same class (data type)





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R - (Object|Variable|Symbol)

R provides a number of specialized objects. They are created (instantiated), used and referenced through variable (known as symbol). When you read the term object in the documentation, you can interchange...
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R - Apply a function over a data structure

The apply function call a function over a data structure: apply do it over a array or matrix lapply do it over a list ...
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R - Class

A class is just an attribute of an object. You can remove the attribute with the function . The class with then become the type A list can have different class. unclass returns (a copy of) its...
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R - Matrix

The matrix object in R is an array of two dimensions with the same class (data type). You can create a matrix with three methods: the matrix method the columns and rows bindings methods the...
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R - Subset Operators (Extract or Replace Parts of an Object)

In the Data Manipulation category, you have the subset operators: [ [[ $ This operators acts on: vectors, matrices, arrays lists data.frame to extract or replace parts. See also:...



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