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Since Erlang C does not take abandonment into account, an implementation of Erlang A would be useful.

Literature: Mandelbaum (2007) doi:10.1007/978-3-540-29860-1_2

The Erlang97 add-in for Excel implements a "fractional" agents calculation, which can be useful for planning decisions. Although the implementation in the add-in is flawed, the concept is very useful for shrinkage calculations, for example.

Example

avg_wait_time(14.01,44.34,646,30)

Is it published yet? Or does it simply not exist in the recently updated versions of R?

When I run install.packages("Erlang"), it says it's not available.

I was wondering if you could incorporate Erlang-A into the function that calculates the number of agents needed for SL. I'm trying to figure myself how to do it, but I guess you'll be faster.

Thanks.

Everytime I try to use the number_of_agents_for_sl function on a dataframe, instead of just a vector of inputs, it throws an error ala this:
numerical expression has 13930 elements: only the first usednumerical expression has 13930 elements: only the first usedthe condition has length > 1 and only the first element will be used

Do I need to wrap an lapply around it perhaps?

Hi there
I just tried to install your package on R3.4.3 and got the namespace error. Could you please let me know what I missed? I've installed roxygen2 as well. Thank you.

devtools::install_github("phubers/erlang")
Downloading GitHub repo phubers/erlang@master
from URL https://api.github.com/repos/phubers/erlang/zipball/master
Installing Erlang
"C:/PROGRA1/R/R-341.3/bin/x64/R" --no-site-file --no-environ --no-save
--no-restore --quiet CMD INSTALL
"C:/Users/Amelia/AppData/Local/Temp/RtmpaGW5zX/devtools1428c9a31a0/phubers-erlang-c4f1ea4"
--library="C:/Users/Amelia/Documents/R/win-library/3.4" --install-tests

• installing source package 'Erlang' ...
  ERROR: a 'NAMESPACE' file is required
• removing 'C:/Users/Amelia/Documents/R/win-library/3.4/Erlang'
  In R CMD INSTALL
  Installation failed: Command failed (1)

Amelia