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Prasanna Nandakumar

Rating
1478.08 (4,503,324th) 		Reputation
3,139 (53,826th)
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Title Δ
Extract a fixed-length character in R +0.55
"flatten" data based on match from two data frames in R +4.00
How do I add ticks to the top and right side of a graph in ggplot2 0.00
How to transform data frame with different column names from wide t... -2.54
Filtering a dataframe by variable number of criteria? -3.34
Frequency of unique character -1.63
R specifying unit for diff of timestamps -2.89
Displaying *(star) superscript in R - expression( ) 0.00
Splitting the values column using split function in R -4.18
R: reshape data frame when one column has unequal number of entries -2.03
Group categories in R according to first letters of a string? +4.02
cross table that counts unique values in R -2.04
Displaying big numbers in xtable properly +0.11
Importing YAML file to RStudio -0.03
r datetime conversion from chr using strptime gives NA +0.05
Summing values in rows based on pairs of values in other columns in R +0.74
How to obtain the cumulative distribution function +0.06
Annotate values above bar - R 0.00
R - Error after library(plyr) command 0.00
How to make R legend with 2 columns? -3.75
How to compute aggregate and append result as new column in R +2.46
How to obtain eigen vectors from particular eigen values using R? 0.00
Return root domain from url in R -3.61
Finding age at time of registration using difftime? 0.00
How to Copy and Insert rows into same dataframe based on count +3.59
Extract week number from POSIXct object 0.00
sqlSave Updating Oracle DB Table -not working for Date field 0.00
Parsing multiple xml files to a Single Dateframe in R 0.00
Is there a way to get residuals/fitted values for a Holt Winter fit... -3.65
How to avoid 'for loop' to work on a CSV file faster in R? 0.00
How do I consolidate ddply across two columns? 0.00
R histogram plot controlling x-axis values -2.17
R - how to sort a data frame by user-defined (e.g. non-alphabetic)... -0.03
Cumulated sum by variable values -3.10
Autocorrelation scatterplot for a special lag 0.00
Quickest way to find the maximum value from one column with multipl... +4.24
R - Data frame to matrix for 2-dimensional values? -0.01
how to remove unique values from a vector +3.04
Trouble creating xts +4.38
How to upload arules package in R 0.00
Changing the Date format in R +4.62
Clustering Variables 0.00
Delete special character from a string value +0.10
How to add more margin to a heatmap.2 plot with the png device? 0.00
Which package to use to connect R with MongoDB? 0.00
How to use lm function for large number of attributes 0.00
na.strings applied to a dataframe +0.81
Counting Occurences & Histogram Charts in R 0.00
R: Converting multiple binary columns into one factor variable whos... -1.15
R data.table loop subset by factor and do lm() -2.18