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Rating Stats for

Robert Krzyzanowski

Rating
1508.90 (79,058th)
Reputation
7,953 (19,848th)
Page: 1 2 3 4 ... 6
Title Δ
How to create a combined sequence of constant length but starting a... +1.81
Aggregating data frame rows using an input vector -1.48
Concatenate texts in a row based on a condition -0.85
Making hashes find each other by their values using Ruby -0.01
How is this instance method accessible in another class -0.12
test quality of logistic regression model using confusion matrix an... 0.00
Faster way to read fixed-width files in R +1.00
dplyr, do(), extracting parameters from model without losing groupi... 0.00
How to remove groups of observation with dplyr::filter() -2.46
How to Format Numbers to Control the Exponential Part 0.00
Area of partial sphere in a cuboid using R 0.00
R version of PHP function isset 0.00
Valid upper value of uniroot function in R 0.00
Conditional execution in R based on decision tree 0.00
Populating a new column with a binary variable based on the values... -1.45
Parsing R user input into plotting functions +2.00
Designating Other than First Row as Headers in R -1.02
New variable with uniform random number bounded by constant and sec... +2.16
Implementing in-place modification algorithms in R 0.00
Replicate rows in a R data frame and index new duplicates +2.56
R how to visualize confusionMatrx using the caret package 0.00
How to keep columns labels when numeric convert to character 0.00
Merging datasets by name when names have different formats in R -0.48
How to limit an array of similar hashes to those that have more tha... +1.49
listwise deletion of rows with NA in a given column 0.00
How to write those expressions in coffee script? 0.00
Why the original element got changed when I modify the copy created... 0.00
Modeling Shocks to a Maximization in R 0.00
Perform a while loop for a certain time in Ruby 0.00
Remove spacing in dataframe by column in R 0.00
How to convert two variables (integers) to a double in R 0.00
Truncate decimal to specified places 0.00
Parsing irregular character strings for numbers and put into struct... -1.52
Parsing irregular character strings for numbers and put into struct... +0.65
R : add a column with missing values to a dataframe -0.00
Separate text to variables in R +0.54
Convert numbers to letters -0.19
R YaleToolKit Sparklines x-axis showing numbers NOT dates -1.11
How to effectively match on multiple values 0.00
Calling functions from non-base R packages in `parallel` package wi... +2.98
Make a factory function for creating ko.computed -1.77
How to find if the numbers are continuous in R? +0.97
delete specified columns in a data frame (the names of target colum... +0.02
Isolate randomness of a local environment from the global R process -1.27
Environments in R, mapply and get -1.54
Identify time-invariant observations in a pdata.frame in plm 0.00
Systematically transform a multivariate function into several univa... 0.00
delete rows with apply +1.41
Matching between a vector and multiple vectors in a list in R -0.13
Merge two rows in a dataframe in R +0.48