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Chriss Paul

Rating
1439.12 (4,534,594th) 		Reputation
514 (267,255th)
Page: 1 2
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Replicate excel solver in R -3.01
Construct 3-way contingency table in R +4.53
Count rows which have value >0 for each column (in R) +0.85
Calculate percentage when all values are in the same column of a da... +0.67
I need to find the values in one column given the three minimum val... +0.63
How To Create a Use Apply (or create a function) To Turn Character... -2.94
Conditional merging on multiple columns -3.10
Perform calculations in R on grouped rows and add result to existin... -3.23
How I can calculate multiple means and standard deviations for grou... +5.03
how put kernel matrix in a diagonal of a matrix? 0.00
R - Wide to long format Dataframe, new colnames +1.56
Create a lag difference variable within group relative to baseline +0.71
Data.table to shift one column down and fill with NA +0.57
Integer date from SPSS to Python date +5.91
Create new column that equals one of many existing columns when con... +4.91
Merge two dataframes by two conditions -3.31
Create a counter column in R Data.Table, with a condition on anothe... -3.14
How to replace value in a dataframe based on a value in a different... -2.06
Reshape time-series data into panel-data with multiple subjects and... 0.00
Creating a ts time series with missing values from a data frame -2.68
adding last value to the top of the data frame. -1.41
Add new column with name of each element as a value -1.20
full_join() two data frames in segments/batches in r 0.00
Use reshape2 to reorder the first columns of a data frame -3.23
Sort the columns of a big Dataframe with different number of lines... +4.65
Create a dataframe with list elements with dplyr in R -3.29
Multiplying element in list with columns in another list in the sam... -3.44
Get the latest record based on multiple columns - R +1.25
dataframe calculation - basic minus calculation -3.31
Function to calculate daily % change from yesterday close and apply... -3.05
from R to python pandas: create id key series in order on duplicates -1.22
classifying identically pattern in words using R -1.35
R - Partially flatten nested lists with dataframes -3.52
How can I grab all the names/values that are the same in a vector a... +0.38
Conditional difference between two data.frame columns 0.00
selecting particular rows of the columns as per if-else condition -3.52
Calculating annualized return with uneven panel data set -3.59
R data.table to xts with grouping -1.66
add a column into a matrix refereing to an external one R -3.82
Combine columns from one data frame into new data frame, and filter +2.41
Subsetting and repetition of rows in a dataframe using R +0.03
Subset list of lists based on value of element of the inner list 0.00
Obtaining the index of elements that belong to common group in R -1.09
Annualizing quarterly dividends reported over several quarters -0.93
how can i make dataframe from text with spaces in r? -3.70
Using R to group data by class then get sum of all columns -3.68
flag rows in groups with multiple conditions -0.27
Grouping by column using get() while using a filter does not work i... 0.00
R: Creating column with quartile rank for each date in panel data -3.72
Assign values with same name in a nested list in R -3.20