Trending questions in Data Analytics

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Using dplyr package to summarise multiple columns - R

'dplyr' package provides 'summarise_all()' function to apply ...READ MORE

Jun 6, 2018 in Data Analytics by Bharani
 • 4,660 points • 2,204 views
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1 answer

Aligning title in ggplot2

You can use the theme layer to ...READ MORE

Apr 27, 2018 in Data Analytics by Bharani
 • 4,660 points
edited Jun 9, 2020 by MD • 3,919 views
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1 answer

Rattle packages in R

Rattle is a popular GUI for data mining ...READ MORE

Jul 6, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 872 views
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1 answer

Unload a package without restarting R

Try the below option: detach("package:vegan", unload=TRUE) NOTE: You can ...READ MORE

Apr 17, 2018 in Data Analytics by DataKing99
 • 8,250 points • 4,244 views
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How can I suppress warnings globally in an R Script ?

You can use: options(warn=-1) // turning off warnings ...READ MORE

May 30, 2018 in Data Analytics by zombie
 • 3,790 points • 2,343 views
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1 answer

hclust size limit

Classic hierarchical clustering approaches are O(n^3) in runtime and O(n^2) in ...READ MORE

Jun 26, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,203 views
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1 answer

Extract lhs items from rules in R

Try the following code: data("Adult") rules <- apriori(Adult, ...READ MORE

Jun 20, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,435 views
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How can I pause, sleep, wait, execution for X seconds in R?

You can try the following piece of ...READ MORE

May 25, 2018 in Data Analytics by zombie
 • 3,790 points • 2,428 views
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1 answer

Unable to install the 'devtools' package in R

Run the below command in your Ubuntu/Linux ...READ MORE

Jun 6, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,809 views
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1 answer

How to cluster center mean of DBSCAN in R?

Just index back into the original data ...READ MORE

Jun 26, 2018 in Data Analytics by DataKing99
 • 8,250 points • 967 views
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1 answer

Is there any easy way to fill in missing data?

You can try the following code: First, you ...READ MORE

Jun 20, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,198 views
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1 answer

How to refresh shiny dataset?

When you refresh the page in the ...READ MORE

May 31, 2018 in Data Analytics by Sahiti
 • 6,370 points • 2,034 views
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1 answer

How to find out the sum/mean for multiple variables per group in R?

You can use the reshape2 package for ...READ MORE

Apr 12, 2018 in Data Analytics by DataKing99
 • 8,250 points • 4,110 views
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1 answer

Read command line parameters from an R script

Here's an example to explain : Two files ...READ MORE

Apr 17, 2018 in Data Analytics by kappa3010
 • 2,090 points • 3,815 views
0 votes
1 answer

What is the Difference in Size and Count in pandas (python)?

The major difference is "size" includes NaN values, ...READ MORE

Apr 30, 2018 in Data Analytics by DeepCoder786
 • 1,720 points
edited Jun 8, 2020 by Gitika • 3,224 views
0 votes
1 answer

How to limit output of a dataframe in R?

For randomly sampling a row/cell where a ...READ MORE

Apr 18, 2018 in Data Analytics by kappa3010
 • 2,090 points • 3,712 views
0 votes
1 answer

How to forecast season and trend of data using STL and ARIMA in R?

You can use the forecast.stl function for the ...READ MORE

May 19, 2018 in Data Analytics by DataKing99
 • 8,250 points • 2,322 views
0 votes
1 answer

Randomly subset of data with dplyr

Maybe this is what you want: # sample ...READ MORE

Jun 19, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 957 views
0 votes
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How can I remove duplicated rows in R ?

The function distinct() in the dplyr package ...READ MORE

Apr 27, 2018 in Data Analytics by shams
 • 3,670 points • 3,200 views
0 votes
1 answer

How can I Split code over multiple lines in an R script?

You can do this as follows: setwd(paste("~/a/very/long/path/here ...READ MORE

May 22, 2018 in Data Analytics by zombie
 • 3,790 points • 2,108 views
0 votes
1 answer

How to group all columns exculding a single column?

You can either use group_by or group_by_at Using ...READ MORE

Apr 12, 2018 in Data Analytics by Sahiti
 • 6,370 points • 3,781 views
0 votes
1 answer

Reshape dataframe without “timevar” from long to wide format in R

Assuming that the data is in the ...READ MORE

Jun 14, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 1,089 views
0 votes
1 answer

How to stack scatterplot in ggplot2?

Use melt() to reshape your data with total as a factor ...READ MORE

May 8, 2018 in Data Analytics by Sahiti
 • 6,370 points • 2,616 views
0 votes
1 answer

Working of ggplot scale_continuous 'expand' argument

According to the document if you set limits manually, ...READ MORE

Apr 13, 2018 in Data Analytics by DataKing99
 • 8,250 points • 3,715 views
0 votes
1 answer

Changing Pandas data-frame to JSON type

abc.to_json(orient='records') This command will give you the desired ...READ MORE

May 22, 2018 in Data Analytics by anonymous
 • 1,995 views
0 votes
2 answers

"Train" and "Test" sets in Data Science

Normally to perform supervised learning you need ...READ MORE

Aug 3, 2018 in Data Analytics by Abhi
 • 3,720 points • 1,595 views
0 votes
1 answer

How to write rules generated by Apriori?

I found out one solution: Use as() ...READ MORE

Jun 19, 2018 in Data Analytics by Sahiti
 • 6,370 points • 756 views
0 votes
1 answer

Changing R default library path using .libPaths ?

You should try using one library but ...READ MORE

May 30, 2018 in Data Analytics by zombie
 • 3,790 points • 1,612 views
0 votes
1 answer

Python equivalent to replace function in R

There is actually a replace function in ...READ MORE

May 31, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,535 views
0 votes
1 answer

How to change y axis max in time series using R?

The axis limits are being set using ...READ MORE

Apr 3, 2018 in Data Analytics by Sahiti
 • 6,370 points • 4,000 views
0 votes
1 answer

How can I rotate axis labels in R ?

library(ggplot2) p <- data.frame(Day=c("2011-04-11", "2014-05-24","2004-01-12","2014-06-20","2010-08-07","2014-05-28"), Impressions=c(24010,15959,16107,21792,24933,21634),Clicks=c(211,106,248,196,160,241)) p       ...READ MORE

May 18, 2018 in Data Analytics by zombie
 • 3,790 points • 2,039 views
0 votes
1 answer

Any filter based on conditional criteria in r?

Consider a data frame like this: #Create DF ...READ MORE

May 11, 2018 in Data Analytics by Sahiti
 • 6,370 points • 2,330 views
0 votes
1 answer

R language has several packages for solving a problem. How do you make a decision on which one is the best to use?

CRAN package ecosystem has more than 6000 ...READ MORE

Jun 5, 2018 in Data Analytics by zombie
 • 3,790 points • 1,268 views
0 votes
1 answer

How to filter a data frame with dplyr and tidy evaluation in R?

Requires the use of map_df to run each model, ...READ MORE

May 17, 2018 in Data Analytics by DataKing99
 • 8,250 points • 2,058 views
0 votes
1 answer

Applying the same function to every row of a data.frame - R

You can use the 'appply()' function for ...READ MORE

May 22, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,812 views
0 votes
1 answer

Do-while loop in R

You can use repeat{} condition and check ...READ MORE

Jun 14, 2018 in Data Analytics by DataKing99
 • 8,250 points • 791 views
0 votes
1 answer

How to order bars in a bar graph using ggplot2?

The key to ordering is to set ...READ MORE

Jun 1, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,361 views
0 votes
1 answer

How can I read a .csv file in R language?

read.csv () function is used to read ...READ MORE

Jun 12, 2018 in Data Analytics by zombie
 • 3,790 points • 864 views
0 votes
1 answer

How many data structures does R language have?

R language has Homogeneous and Heterogeneous data ...READ MORE

Jun 5, 2018 in Data Analytics by zombie
 • 3,790 points • 1,092 views
0 votes
1 answer

Adding values of common columns in pandas dataframe

Result = Set1.add(Set2)   x   y 0  70  ...READ MORE

May 30, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,299 views
0 votes
1 answer

How can I install older version of R package ?

Supposedly you want to install some old ...READ MORE

May 14, 2018 in Data Analytics by zombie
 • 3,790 points • 1,926 views
0 votes
1 answer

Converting a string to title case - R

library(tools) toTitleCase("this is sparta") [1] "this is Sparta" ...READ MORE

May 19, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,683 views
0 votes
1 answer

How can I find file name from full file path in R?

You can use: basename("C:/some_dir/filename.ext") # [1] "filename. ...READ MORE

May 24, 2018 in Data Analytics by zombie
 • 3,790 points • 1,427 views
0 votes
1 answer

How to import data from a Json file into R?

Easy and simple: library("rjson") json_file <- "file_name" json_data <- fromJSON(file=json_file)) or ...READ MORE

Apr 26, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 2,602 views
0 votes
1 answer

Selecting only p-value and r.squared value from linear regression result

You can use the $ symbol to ...READ MORE

May 22, 2018 in Data Analytics by Bharani
 • 4,660 points • 1,513 views
0 votes
1 answer

How can I print string and variable contents on the same line using R?

There are two options for doing so.  You ...READ MORE

May 9, 2018 in Data Analytics by zombie
 • 3,790 points • 2,030 views
0 votes
1 answer

What is the difference between [] and [[]] notations to access the elements of a list or dataframe in R?

R provides 3 basic indexing operators. Refer ...READ MORE

Apr 12, 2018 in Data Analytics by kappa3010
 • 2,090 points • 3,152 views
0 votes
1 answer

How to rename columns in pandas (Python)?

You can use the rename function in ...READ MORE

Apr 30, 2018 in Data Analytics by DeepCoder786
 • 1,720 points
edited Jun 8, 2020 by MD • 2,332 views
0 votes
1 answer

R - Error: Duplicate identifiers for rows

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

Apr 9, 2018 in Data Analytics by kappa3010
 • 2,090 points • 3,186 views
0 votes
1 answer

How to check if a directory exists and how to create and create if doesn't exist?

You can use showWarnings = FALSE NOTE:  showWarnings ...READ MORE

Apr 17, 2018 in Data Analytics by DataKing99
 • 8,250 points • 2,813 views
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