Browse 123 R questions and answers from learners and industry experts. Find practical fixes, interview prep and step-by-step solutions - or ask your own.
Let us find the number of bars by creating a function bar_count bar_count
1 Answer · 1.7K Views · Answered ✓
Sapply() takes list as an input but returns an output as vectors.Let us explain with an example x
1 Answer · 1.3K Views · Answered ✓
To get the parent directory in R, we can use getwd() as follows working_dir
1 Answer · 1.5K Views · Answered ✓
A matrix is a representation of an array of numbers in n dimensional format that are again represented as rows and columns. From a matrix, we can…
1 Answer · 1.6K Views · Answered ✓
Let us take and example of a text file scan("example.txt", what="character", sep=NULL) But this piece of code returns a vector but we want as a…
1 Answer · 1.6K Views · Answered ✓
while loops are a while to have your program continuously run some block of code until a condition is met (made TRUE). The syntax is: while…
1 Answer · 1.5K Views · Answered ✓
Vectors are the commonly used data objects used in R and there are many types as integer, logical, character, double, complex and raw. Let us define…
1 Answer · 1.7K Views · Answered ✓
For doing this we have to select a dataframe for selecting rows and columns. A data frame is a structure having 2 dimensions which contains data in…
1 Answer · 1.4K Views · Answered ✓
Let us create a function which returns TRUE and FALSE based on the condition num_check
1 Answer · 2.4K Views · Answered ✓
For merging two or more vectors, we use append() function which is a built in function in R. Let us define two vectors v=c(10,20,30,40)…
1 Answer · 1.0K Views · Answered ✓
In R, matrix can be created by many ways Let us create a matrix in the most simple way matrix(1:9, nrow = 3, ncol = 3) Output In
1 Answer · 1.1K Views · Answered ✓
A data frame is a structure having 2 dimensions which contains data in the form or rows and columns.It is like a spreadsheet or dictionaries of…
1 Answer · 1.1K Views · Answered ✓
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