tchakravarty

tchakravarty has asked 94 questions and find answers to 22 problems.

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tchakravarty questions

Aggregating duplicate rows by taking sum
R: Checking if a set of variables forms a unique index
EMR PySpark: LZO Codec not found
R: Extreme bunching of random values from runif with Mersenne-Twister seed
Tag all duplicate rows in R as in Stata
R: Add "th", "rd" and "nd" to dates
R Markdown: Citation parsing
dplyr: standard evaluation for mutate with quoted variable names
ggplot: Subset a layer where data is passed using a pipe
modelr: Fitting multiple models with resampled data

tchakravarty answers

Predict function for heckman model
Overlap ranges in single dataframe
Creating edge list in R
Where is `ecdf` saving its object? (and how to measure it?)
How to install Vowpal Wabbit python interface
Write custom classifier in R and predict function
error Installing topicmodels in R Ubuntu
How to use dplyr to group elements in x ,count frequency of x for an interval of y?
Logistic regression using SciPy
Write xts/zoo object to csv with index