Recent questions tagged dataframe

0 votes
1 answer

Pandas DataFrames in a loop, df.to_csv()

Sep 25, 2018 in Python by bug_seeker
 • 15,510 points • 10,373 views
0 votes
1 answer

Reformat value_counts() analysis in Pandas for large number of columns

Sep 25, 2018 in Python by bug_seeker
 • 15,510 points • 1,985 views
+3 votes
1 answer

Apache Nifi Execute Process Processor

Aug 10, 2018 in Big Data Hadoop by soujanyabargavi
 • 210 points • 4,148 views
0 votes
1 answer

Delete row in HBase

Jul 24, 2018 in Database by Data_Nerd
 • 2,390 points • 1,791 views
0 votes
1 answer

How to sample random rows in dataframe?

Jul 3, 2018 in Data Analytics by anonymous
 • 861 views
0 votes
1 answer

How to sample n random rows per group in a dataframe?

Jul 3, 2018 in Data Analytics by anonymous
 • 5,108 views
0 votes
1 answer

Create vector matrix of movie ratings using R project?

Jun 30, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,155 views
0 votes
1 answer

Randomly subset of data with dplyr

Jun 19, 2018 in Data Analytics by Sahiti
 • 6,370 points • 852 views
0 votes
1 answer

Drop unused levels from a data frame in R

Jun 14, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,980 views
0 votes
1 answer

How to extract a dplyr tbl column as a vector?

Jun 6, 2018 in Data Analytics by DataKing99
 • 8,250 points • 6,622 views
0 votes
1 answer

Constructing a new data.frame by giving values row by row - R

Jun 4, 2018 in Data Analytics by zombie
 • 3,790 points • 482 views
0 votes
1 answer

Finding the nth highest value in a vector or a data-frame column

May 31, 2018 in Data Analytics by zombie
 • 3,790 points • 8,867 views
0 votes
1 answer

Adding values of common columns in pandas dataframe

May 30, 2018 in Data Analytics by zombie
 • 3,790 points • 1,169 views
+4 votes
11 answers

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

May 25, 2018 in Data Analytics by DataKing99
 • 8,250 points • 108,024 views
0 votes
1 answer

Converting a pandas data-frame to a dictionary

May 23, 2018 in Data Analytics by zombie
 • 3,790 points • 4,577 views
0 votes
2 answers

Replacing a row in pandas data.frame

May 23, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 13,743 views
0 votes
1 answer

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

May 22, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 1,695 views
+1 vote
1 answer

Binding rows of 2 data-frames which have non-identical columns

May 22, 2018 in Data Analytics by BHARANI
 • 420 points • 6,052 views
+5 votes
3 answers

Counting the frequency of unique values - R

May 18, 2018 in Data Analytics by nirvana
 • 3,130 points • 98,473 views
0 votes
1 answer

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

May 17, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,899 views
+1 vote
2 answers

Locating row index of a column which has the maximum value - R

May 16, 2018 in Data Analytics by nirvana
 • 3,130 points • 13,026 views
0 votes
1 answer

Reordering levels of a factor variable

May 15, 2018 in Data Analytics by DataKing99
 • 8,250 points • 792 views
0 votes
1 answer

Changing the column type from numeric to factor - R

May 8, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,117 views
0 votes
1 answer

How to drop rows of Pandas DataFrame whose value in certain coulmns is NaN

May 7, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,705 views
0 votes
1 answer

Deleting particular objects from workspace - R

May 7, 2018 in Data Analytics by DataKing99
 • 8,250 points • 800 views
0 votes
1 answer

cache tables in apache spark sql

May 4, 2018 in Apache Spark by shams
 • 3,670 points • 3,320 views
0 votes
1 answer

Discarding duplicate rows from a data.frame - R

May 4, 2018 in Data Analytics by nirvana
 • 3,130 points • 744 views
0 votes
1 answer

Extracting numeric columns from a data.frame - R

May 4, 2018 in Data Analytics by nirvana
 • 3,130 points • 7,742 views
0 votes
1 answer

How to delete DataFrame row in pandas based upon a column value?

May 3, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,621 views
0 votes
1 answer

Can I read a CSV represented as a string into Apache Spark?

May 3, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 2,512 views
0 votes
1 answer

Renaming columns of dataframes

May 3, 2018 in Python by kaalabilli
 • 1,090 points • 487 views
0 votes
1 answer

Grouping rows in a list in pandas (python) groupby

May 3, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 1,309 views
0 votes
7 answers

How to iterate over rows in a Dataframe in pandas (Python)?

May 2, 2018 in Data Analytics by DataKing99
 • 8,250 points • 5,574 views
0 votes
1 answer

How to order data frame rows according to vector with specific order using R?

Apr 30, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 7,465 views
0 votes
1 answer

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

Apr 30, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 2,861 views
0 votes
1 answer

How to rename columns in pandas (Python)?

Apr 30, 2018 in Data Analytics by DataKing99
 • 8,250 points • 2,060 views
0 votes
1 answer

When not to use foreachPartition and mapPartition?

Apr 30, 2018 in Apache Spark by shams
 • 3,670 points • 7,156 views
0 votes
1 answer

data.frame vs matrix

Apr 27, 2018 in Data Analytics by nirvana
 • 3,130 points • 1,173 views
0 votes
1 answer

How to find common elements from multiple vectors in R?

Apr 27, 2018 in Data Analytics by DataKing99
 • 8,250 points • 5,856 views
0 votes
2 answers

How to subset rows containing NA in a chosen column of a data frame?

Apr 26, 2018 in Data Analytics by DataKing99
 • 8,250 points • 10,467 views
+5 votes
11 answers

Concatenate columns in apache spark dataframe

Apr 26, 2018 in Apache Spark by Shubham
 • 13,490 points • 72,377 views
0 votes
1 answer

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

Apr 20, 2018 in Data Analytics by DataKing99
 • 8,250 points • 707 views
0 votes
1 answer

How to save a DataFrame in R??

Apr 20, 2018 in Data Analytics by DataKing99
 • 8,250 points • 5,170 views
0 votes
1 answer

Which query to use for better performance, join in SQL or using Dataset API?

Apr 19, 2018 in Apache Spark by Ashish
 • 2,650 points • 1,825 views
0 votes
1 answer

Changing Column position in spark dataframe

Apr 19, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 13,765 views
0 votes
1 answer

How to limit output of a dataframe in R?

Apr 18, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 3,396 views
0 votes
1 answer

How to drop factor levels in a subsetted data frame?

Apr 17, 2018 in Data Analytics by Sahiti
 • 6,370 points • 5,404 views
+1 vote
1 answer

How to convert a list of dataframes in to a single dataframe using R?

Apr 13, 2018 in Data Analytics by BHARANI
 • 420 points • 7,039 views
+1 vote
1 answer

How to convert dataframe columns from factors to characters?

Apr 13, 2018 in Data Analytics by Sahiti
 • 6,370 points • 19,540 views
0 votes
1 answer

How to create an empty dataframe?

Apr 13, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,388 views
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