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Felipe Alvarenga

Rating
1492.07 (4,372,250th) 		Reputation
1,292 (124,361st)
Page: 1 2
Title Δ
How to merge rows for topic modelling with same doc_id -3.90
Merge contents from three dataframes into one column in R (across m... +3.28
dcast (reshape2 package) error with data frame -2.68
Get file depending on extension and directory in R +0.05
overwrite FALSE with NA -3.64
How to drop IDs if the variables are populated for only a year? 0.00
Creating New Values for Column from Vector of Differences -0.25
Conditional search, match, filter and replace values between data f... -2.77
Return one out of multiple rows with partially matching entries 0.00
How can I tidy student enrollment data on a per semester basis? +4.15
fill a column in my data frame conditional on other column, with va... -0.75
Split a dataframe evenly without separating the grouping variable +3.51
Format scientific notation in R +4.10
How to create a loop to compare (table) variables within same dataf... 0.00
How to fill rows with data from another row with the same reference... -1.73
reading excel file with fill( ) 0.00
Replacing row elements in a dataframe based on values from another... -3.02
Cumulative (expanding window) mean by group with duplicate check fo... -2.68
Not sure why this is outputting only the first column and not the w... 0.00
Regex for a string including one expression and excluding another i... +1.31
how to assign words to a number in a dataframe +3.01
Sort data in a data frame according to the numbers in a factor +0.59
R - How to create a histogram based on time with regards to sign ch... 0.00
R Histograms X axis not equal distributed -0.17
Label the midpoint of a segment in ggplot -1.75
How to plot 2 bar plot in same graph 0.00
Split dataframe into list based on consecutive row number 0.00
Building an adjacency matrix in R +4.84
ggplot change line color specified by x axis values +4.51
Import and apply function to files with the same name in different... -3.74
Can't get toupper to work 0.00
trying to use exact=TRUE feature in R glmnet -3.41
openxlsx format cells as number with comma and decimal places +4.13
incorrect logistic regression output 0.00
R: Calculating missing monthly values -2.61
Transpose or gather wide to long dataframe with multiple keys and v... -3.68
Type measure differences in glmnet package? 0.00
Count number of occurrences in R +3.96
ggplot - Create a border overlay on top of map +4.13
Calculate distances between longitude and latitude for a large data... +4.24
Changing several names at once in column in data.frame in R 0.00
Replacing values in a data.table according to multiple columns names 0.00
How do I initialize a new column in a data frame using data from tw... -3.31
Simplify for loop: read multiple files and remove specific data -3.58
Changing Values from Wide to Long: 1) Group_By, 2) Spread/Dcast -3.50
R: Binding columns by key variable +0.08
Trying to Write a For Loop that finds "TRUE" in rows +4.18
add sub/superscripts to barplot labels 0.00
Collapsing Sparse dataframe in R based on Group By 0.00
how to find the frequency of a tag or a word in r -0.21