Trending questions in Data Analytics

0 votes
5 answers

How to remove NA values with dplyr::filter()

Try this: df %>% filter(!is.na(col1)) READ MORE

Mar 26, 2019 in Data Analytics by anonymous
235,167 views
0 votes
5 answers

How to remove NA values from a Vector in R?

Hello team, you can use na.omit x <- c(NA, 3, ...READ MORE

Dec 9, 2020 in Data Analytics by anonymous
• 82,780 points
159,783 views
+4 votes
11 answers

Creating an empty data.frame with only column names - R

Hi, You need to create a data frame ...READ MORE

Dec 11, 2020 in Data Analytics by MD
• 95,360 points
101,516 views
+2 votes
5 answers

Printing a data.frame without index - Python

.tolist() function will remove index READ MORE

Mar 11, 2019 in Data Analytics by nishant thakur
81,121 views
+1 vote
3 answers

Filtering R data-frame with multiple conditions

You can use the 'filter' function from ...READ MORE

Mar 26, 2018 in Data Analytics by Bharani
• 4,660 points
82,253 views
+5 votes
3 answers

Counting the frequency of unique values - R

Hi, You can use plyr module. It will give ...READ MORE

Dec 14, 2020 in Data Analytics by MD
• 95,360 points
75,629 views
+4 votes
3 answers

How to sum a variable by group in R?

You can also try this way, x_new = ...READ MORE

Aug 1, 2019 in Data Analytics by Cherukuri
• 33,010 points
73,427 views
0 votes
4 answers

How to change font size of text and axes on R plots ?

To change the font size of text ...READ MORE

Dec 16, 2020 in Data Analytics by Gitika
• 65,890 points
62,377 views
+2 votes
2 answers

Change data type of one column in R

You can change data types using as.* ...READ MORE

Aug 16, 2019 in Data Analytics by anonymous
• 33,010 points
62,206 views
+2 votes
1 answer

Show a list of all variables in R

Hi Swathi, You can use ls() to list ...READ MORE

Jun 27, 2019 in Data Analytics by Cherukuri
• 33,010 points
58,078 views
0 votes
2 answers

R function for finding the index of an element in a vector?

The function match works on vectors : x <- sample(1:10) x # ...READ MORE

Dec 12, 2020 in Data Analytics by Rajiv
• 8,910 points
52,843 views
+1 vote
2 answers

Which function can I use to clear the console in R and RStudio ?

Description                   Windows & Linux           Mac Clear console                      Ctrl+L ...READ MORE

Apr 17, 2018 in Data Analytics by anonymous
51,919 views
0 votes
0 answers

How to Use rbind and cbind on Single Dataframe

Sorry for framing the question incorrectly. As ...READ MORE

Jul 22 in Data Analytics by avinash
• 1,840 points
66 views
0 votes
0 answers

Speed up the loop operation in R

I have a significant R performance issue. ...READ MORE

Jul 20 in Data Analytics by avinash
• 1,840 points
24 views
0 votes
0 answers

All Levels of a Factor in a Model Matrix in R

I have a data.frame that includes factor ...READ MORE

Jul 9 in Data Analytics by avinash
• 1,840 points
48 views
0 votes
0 answers

Create data frame from function in R

One function that I designed can produce ...READ MORE

Jul 9 in Data Analytics by avinash
• 1,840 points
38 views
0 votes
0 answers

Extracting specific columns from a data frame

I want to construct a new dataframe ...READ MORE

Jul 6 in Data Analytics by avinash
• 1,840 points
34 views
0 votes
0 answers

What is the difference between rm() and rm(list=ls())?

The majority of items I've read. They ...READ MORE

Jul 6 in Data Analytics by avinash
• 1,840 points
20 views
0 votes
0 answers

how to use the Box-Cox power transformation in R

I've read that Box-Cox can help determine ...READ MORE

Jul 6 in Data Analytics by avinash
• 1,840 points
18 views
0 votes
0 answers

Error: could not find function ... in R

Please be as detailed as you can ...READ MORE

Jul 5 in Data Analytics by avinash
• 1,840 points
26 views
0 votes
0 answers

How can two strings be concatenated?

cbind = tmp ("GAD", "AB") tmp # [,1] ...READ MORE

Jul 5 in Data Analytics by avinash
• 1,840 points
22 views
0 votes
0 answers

Extracting the last n characters from a string in R

See the code below: library(dslabs) data(gapminder) differenceminder percent > percent filter(year% ...READ MORE

Jul 5 in Data Analytics by avinash
• 1,840 points
22 views
0 votes
0 answers

How can I avoid the transformation into an atomic vector in a matrix (r programming)

I'm scrambling to come up with a ...READ MORE

Jul 5 in Data Analytics by avinash
• 1,840 points
21 views
0 votes
0 answers

Confidence interval calculation in R

When attempting to compute the CI in ...READ MORE

Jul 5 in Data Analytics by avinash
• 1,840 points
16 views
0 votes
1 answer

How to check if a file already exists or not in R?

Check out file.exists() function!! The function file.exists() returns a ...READ MORE

Oct 29, 2019 in Data Analytics by Cherukuri
• 33,010 points
42,395 views
0 votes
0 answers

Load csv file in R

Is it possible to import a csv ...READ MORE

Jun 30 in Data Analytics by avinash
• 1,840 points
26 views
0 votes
0 answers

Send str() output to View()

A dataset containing 313 variables is the ...READ MORE

Jun 30 in Data Analytics by avinash
• 1,840 points
26 views
0 votes
0 answers

Extracting the last n characters from a string in R

The final n characters of a string ...READ MORE

Jun 27 in Data Analytics by avinash
• 1,840 points
30 views
0 votes
0 answers

Standard Deviation in R Seems to be Returning the Wrong Answer - Am I Doing Something Wrong?

An easy illustration of standard deviation calculation: The ...READ MORE

Jun 27 in Data Analytics by avinash
• 1,840 points
30 views
0 votes
0 answers

Why 'nrow()' function doesn't seem to work within 'summarise()' function?

See the code below: library(dslabs) \sdata(gapminder) gapminder percent > ...READ MORE

Jun 27 in Data Analytics by avinash
• 1,840 points
28 views
0 votes
0 answers

Get row and column indices of matches using `which()`

months and 9 years ago updated ten months ...READ MORE

Jun 27 in Data Analytics by avinash
• 1,840 points
27 views
0 votes
0 answers

R function rep() in Python (replicates elements of a list/vector)

Each element of a vector is duplicated ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
120 views
0 votes
1 answer

Text mining- how to build a term-document matrix

You're not loading the TM library, and ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
62 views
0 votes
1 answer

why the predict() function does have different rows in R

Alter this sentence: model = lm(train$latitude train$crashes) to lm(crashes ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
30 views
0 votes
0 answers

Using One Sample Kolmogorov Smirnov Test in R for in-group Variation/ Distribution

0 In order to compare the voice characteristics ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
39 views
0 votes
0 answers

How can I rbind multiple single-value rows to my data.frame?

0 What follows functions as expected: Data.frame(c(1, 2, 3)) ...READ MORE

Jun 24 in Data Analytics by Avinash
• 1,260 points
43 views
0 votes
0 answers

what is diffrence between NROW and nrow in r?

If nrow and ncol are already present ...READ MORE

Jun 23 in Data Analytics by avinash
• 1,840 points
71 views
0 votes
1 answer

R numbers from 1 to 100

Your error is seeking for range, which ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
37 views
0 votes
0 answers

paste() within another function

I'm not clear why the first function ...READ MORE

Jun 24 in Data Analytics by Avinash
• 1,260 points
36 views
0 votes
1 answer

What does 'r' mean before a Regex pattern?

Since the string is to be treated ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
32 views
0 votes
1 answer

StepAIC() stopping point

Square RSS Df Sum AIC 169 61.3 ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
29 views
0 votes
0 answers

Looping with arima in R

I'm attempting to use the for function ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
21 views
0 votes
0 answers

pass character strings to ggplot2 within a function

In order to streamline my work process, ...READ MORE

Jun 24 in Data Analytics by Avinash
• 1,260 points
25 views
0 votes
0 answers

Understanding output of rbind function when a list is passed as argument

While using R to practise fundamental matrices ...READ MORE

Jun 24 in Data Analytics by Avinash
• 1,260 points
24 views
0 votes
0 answers

why the predict() function does have different rows in R

I'm using linear regression to attempt and ...READ MORE

Jun 23 in Data Analytics by avinash
• 1,840 points
52 views
0 votes
1 answer

Polynomials as functions in R

 this will work _polynomial = function(x) { ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
21 views
0 votes
1 answer

How do I convert a factor into date format?

That was close. The as needs to ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
37 views
0 votes
1 answer

Why does tidyverse still require plyr to load?

ggplot2 still imports plyr (at least as ...READ MORE

Jun 24 in Data Analytics by Sohail
• 2,960 points
66 views
0 votes
0 answers

Is there a quantile function in R that includes both given x and given probs?

I need a R function that computes ...READ MORE

Jun 23 in Data Analytics by avinash
• 1,840 points
35 views
0 votes
0 answers

What is meant by "An Object" when we use Str() Function in R

Everyone agrees that str() reveals an object's ...READ MORE

Jun 23 in Data Analytics by avinash
• 1,840 points
32 views