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Purpose of the switchboard package

The switchboard package for R is an agile widget engine for creating dynamic, real-time dashboards for iterative simulations (e.g., for/while loops). It contains a growing, unsorted collection of visualization widgets rendered in a Tcl/Tk GUI–these include progress bars, counters, eavesdroppers, injectors, switches, and sliders. Below is a brief tutorial to get started on creating your own dashboards.

Updates to this vignette will be posted on our research webpage at USF.

For the source code of switchboard see: or

How to cite? TBA, but for this beta version maybe:

Lajeunesse, M.J. (2021) Creating dynamic, real-time dashboards with the switchboard package for R. R package, v. 0.1.

Report a bug? Have comments or suggestions?

Please email me any bugs, comments, or suggestions and I’ll try to include them in future releases: . Also try to include switchboard in the subject heading of your email. Finally, I’m open to almost anything, but expect a lag before I respond and/or new additions are added.

Video tutorials on Youtube (click on switchboard hex to watch)

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Quick Monte Carlo simulation

Here is how you would script a small Monte Carlo simulation exploring the effects of sample size on linear regression estimation:

Monte Carlo Simulation 1


pop_rho <- 0
pop_X <- 0
pop_Y <- 0
pop_forget <- 400 #milliseconds
ctrl_regression <- FALSE
ctrl_N <- FALSE

for(i in 1:1e5) {

  cov_XY <- matrix(c(1, pop_rho, pop_rho, 1), nrow = 2, ncol = 2)
  sample_XY <- MASS::mvrnorm(1, mu = c(pop_X, pop_Y), Sigma = cov_XY)

  switchboard() %>%
    caption(c("Monte Carlo Simulation", 
              "Slide sample size to see how it impacts regression estimation. 
              Few samples results in poor estimation."), 
            placeOnGrid = c(1,1), size = 2) %>%
    control_switch_pair(c("ctrl_regression", "ctrl_N"), 
                        label = c("regression line", "plot N"), placeOnGrid = c(1,3)) %>%