akhmed

akhmed has asked 2 questions and find answers to 15 problems.

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akhmed questions

dplyr + "meta"-columns: when a column contains names of other columns to use instead of the data
dplyr error: strange issue when combining group_by, mutate and ifelse. Is it a bug?

akhmed answers

libcurl gnutls_handshake() failed: A TLS warning alert has been received
Getting the target or source of an edge in igraph
Writing a single column of R object into pre-existing postgres db table
How to assign identical unique IDs to matching observations between two dataframes in r?
knitr: Add figure notes
Multi-steps forecasting with dplyr and do
ggplot2: forcing space for empty second-level category
Change colors of raster plot in ggplot2
Deploying to Heroku "ERROR: must be superuser to COPY to or from a file"
ggmap route finding - doesn't stay on roads