Trending questions in Data Analytics

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Find length of string in R

You can try nchar > nchar("fast") [1] 4 > set.seed(10) > ...READ MORE

Apr 17, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,447 views
0 votes
1 answer

How to create an empty dataframe?

Initialize with empty vectors: data <- data.frame(Date=as.Date(character()), ...READ MORE

Apr 13, 2018 in Data Analytics by nirvana
 • 3,090 points • 1,597 views
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How to replace NA with 0 using starts_with()

Well I could suggest various options such ...READ MORE

Apr 3, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,970 views
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1 answer

How to create a list of Data frames?

Basically all we have to do is ...READ MORE

Apr 9, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 1,669 views
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Selecting a sublist with purrr

Yes, purrr does provide a package called ...READ MORE

Apr 4, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,853 views
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1 answer

How to use a function to repeat a set of procedures on specific set of columns in a data frame?

You can parse the strings to symbols. ...READ MORE

Apr 3, 2018 in Data Analytics by kappa3010
 • 2,090 points • 1,880 views
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1 answer

Concatenate 2 strings in R

You can use the paste() command: You can ...READ MORE

Apr 14, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,414 views
0 votes
1 answer

Building Random Forest on a data-set comprising of missing(NA) values

You have two options, either impute the ...READ MORE

Apr 3, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,819 views
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1 answer

What is the standard naming convention for the variables in R?

Use of period separator e.g. product.prices <- c(12.01, ...READ MORE

Apr 25, 2018 in Data Analytics by shams
 • 3,670 points • 820 views
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1 answer

How to join columns that are non-NA?

You can match on something like X=X ...READ MORE

Apr 18, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,048 views
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How to merge data frames using joins?

You can use the merge function with ...READ MORE

Apr 12, 2018 in Data Analytics by kappa3010
 • 2,090 points • 1,269 views
0 votes
1 answer

Is there any way to check for missing packages and install them in R?

There are 2 options: Either you can use ...READ MORE

Apr 17, 2018 in Data Analytics by nirvana
 • 3,090 points • 1,038 views
0 votes
1 answer

AUC for 3-Class prediction in R

Use type='probs' inside predict() function, so that ...READ MORE

Apr 4, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,600 views
0 votes
1 answer

How to install an R package from source?

If you have your file located locally ...READ MORE

Apr 14, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 1,191 views
0 votes
1 answer

How to prevent row names to be written to a file while using

Easily by: write.csv(df, "temp.csv", row.names=FALSE) READ MORE

Apr 20, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 861 views
0 votes
1 answer

How do I find out what directory R has chosen to store packages?

.libPaths() // You can use this command ...READ MORE

Apr 24, 2018 in Data Analytics by zombie
 • 3,790 points • 717 views
0 votes
1 answer

Get list of rownames as values after aggregating a dataframe

You can use reshape2 library: library(reshape2) data <- read.table(text="type ...READ MORE

Apr 17, 2018 in Data Analytics by Sahiti
 • 6,370 points • 957 views
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1 answer

How to find out the package version which is loaded in R?

You can use sessionInfo() to accomplish that. > ...READ MORE

Apr 18, 2018 in Data Analytics by zombie
 • 3,790 points • 940 views
0 votes
1 answer

Reshape data from long to wide format

You can use the reshape function reshape(data, idvar ...READ MORE

Apr 17, 2018 in Data Analytics by nirvana
 • 3,090 points • 944 views
0 votes
1 answer

Check if the object(variable) is defined in R

You can use the exists(): > exists("toFindUnknown") [1] FALSE > ...READ MORE

Apr 17, 2018 in Data Analytics by Sahiti
 • 6,370 points • 939 views
0 votes
1 answer

In a dpylr pipline how to use sample and seq?

For avoiding rowwise(), I prefer to use ...READ MORE

Apr 6, 2018 in Data Analytics by DeepCoder786
 • 1,720 points
edited Jun 9, 2020 by Gitika • 1,357 views
0 votes
1 answer

How to apply list to a function which give data frame as output

If you use  tidyverse, you can use ...READ MORE

Apr 11, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,120 views
0 votes
1 answer

Using "dplyr" to summarise multiple columns

You can use the "sumamrise_all()" function for ...READ MORE

Mar 27, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,792 views
0 votes
1 answer

How can I use parallel so that it preserves the list of data frames

You can use pmap as follows: nc <- ...READ MORE

Apr 4, 2018 in Data Analytics by kappa3010
 • 2,090 points • 1,356 views
0 votes
1 answer

How to achieve pivot like data using tidyverse library in R?

You need not spread twice, if you ...READ MORE

Apr 4, 2018 in Data Analytics by kappa3010
 • 2,090 points • 1,300 views
0 votes
1 answer

Join list of data.frames using map() call

You can use Reduce set.seed(24) r1 <- map(c(5, 10, 15), ...READ MORE

Apr 6, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,216 views
0 votes
1 answer

Plotting multiple graphs on the same page in R

If you want to plot 4 graphs ...READ MORE

Mar 27, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,594 views
0 votes
1 answer

How to drop data frame columns by name?

Easily you can do it: drops <- c("V2","V4") df1[ ...READ MORE

Apr 10, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 975 views
0 votes
1 answer

How to create excellent examples in R?

An excellent example must consist of the ...READ MORE

Apr 10, 2018 in Data Analytics by kappa3010
 • 2,090 points
edited Apr 12, 2018 by kappa3010 • 931 views
0 votes
1 answer

Any built-in function to find mode

You can try out the below code ...READ MORE

Apr 14, 2018 in Data Analytics by kappa3010
 • 2,090 points • 727 views
0 votes
1 answer

With the help of tidyverse: how to rename a column to a variable name

With the help of Dplyr: rename function ...READ MORE

Apr 3, 2018 in Data Analytics by DeepCoder786
 • 1,720 points
edited Apr 3, 2018 by DeepCoder786 • 1,135 views
0 votes
1 answer

Left Join and Right Join using "dplyr"

The below is the code to perform ...READ MORE

Mar 27, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,449 views
0 votes
1 answer

How to change mulitiple characters in a column to a date

Firstly we have to set dataf variable ...READ MORE

Apr 3, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 1,035 views
0 votes
1 answer

Hadoop Streaming job vs regular jobs?

In certain cases, Hadoop Streaming is beneficial ...READ MORE

Mar 22, 2018 in Data Analytics by kurt_cobain
 • 9,350 points • 1,194 views
0 votes
1 answer

Imputation in R

You can work with the "Hmisc" package, ...READ MORE

Mar 27, 2018 in Data Analytics by Bharani
 • 4,660 points • 628 views
0 votes
1 answer

webinar details to join the session

Session it got resolved READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 2,033 views
0 votes
1 answer

VM with network settings in Virtual box

Dear Learner, We hope you are doing well. Please ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,841 views
0 votes
1 answer

HIVE DATA LOADING ERROR

Dear Raghu, Hope you are doing great. It is ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,627 views
0 votes
1 answer

Issue while running Oozie job

Dear Learner, Hope you are doing well. To overcome ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,575 views
0 votes
1 answer

Big Data transformations with R

Dear Koushik, Hope you are doing great. You can ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,258 views
0 votes
1 answer

How to sync Hadoop configuration files to multiple nodes?

Dear Raman, Hope you are doing great. Please accept ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,179 views
+2 votes
1 answer

Need a hadoop engine in backend to run r server

Dear Koushik, Hope you are doing great. The hadoop ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,071 views
0 votes
1 answer

mysql connection issue in Spark VM

Dear Saravana, Hope you are doing great. We would ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,128 views
+1 vote
1 answer

R query and Data Science

Dear Deepika, Hope you are doing great. You can ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,081 views
0 votes
1 answer

How to Share the files from local system Mac Book to Edureka VM

Hey Satya, Hope you're doing great. Would you please ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,108 views
0 votes
1 answer

Shut down the VM and restarted

Dear Raghu, Please let us know are you ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,091 views
0 votes
1 answer

Pig - Grunt shell

Dear Narayan, Hope you are doing great. You don't ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 1,077 views
+3 votes
1 answer

Hortonworks Setup for Virtualbox

Dear Learner, Please go to the below link ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 757 views
0 votes
1 answer

Accessing Remote Server

Hey Sudhanshu, Hope you're doing great. It was pleasure ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 869 views
0 votes
1 answer

Related to cluster topic

Hi Learner, Hope you are doing well, Please find ...READ MORE

Dec 18, 2017 in Data Analytics by Sudhir
 • 1,570 points • 854 views
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