## Code

```
library(dplyr)
library(plotly)
library(plot3D)
```

figures

code

R

```
time_space_data <- read.csv("tg-day-in-the-life.csv")
locations_0 <- unique(select(time_space_data, x, y)) %>%
mutate(id = 1:5, t = 0)
locations_24 <- locations_0 %>%
mutate(t = 24)
lines3D(time_space_data$x, time_space_data$y, time_space_data$t,
xlim = c(min(time_space_data$x) - 2,
max(time_space_data$x) + 2),
ylim = c(min(time_space_data$y) - 2,
max(time_space_data$y) + 2),
xlab = "x", ylab = "y", zlab = "Time, t",
col = "#00000080", lwd = 2, alpha = 0.5,
phi = 25, theta = 60, bty = "g", scale = FALSE)
points3D(locations_0$x, locations_0$y, locations_0$t,
add = TRUE, col = "black")
arrows3D(locations_0$x, locations_0$y, locations_0$t,
locations_24$x, locations_24$y, locations_24$t,
add = TRUE, lty = "dashed", lwd = 0.5, col = "black")
```

```
time_space_data <- read.csv("tg-meeting.csv")
trace <- time_space_data %>%
filter(id == 1)
lines3D(trace$x, trace$y, trace$t,
xlim = c(-6, 6), ylim = c(-6, 6),
xlab = "x", ylab = "y", zlab = "Time, t",
col = "black", lwd = .5, phi = 25, theta = 60,
bty = "g", scale = FALSE)
for (i in 2:8) {
trace <- time_space_data %>% filter(id == i)
lines3D(trace$x, trace$y, trace$t, add = TRUE,
xlim = c(-6, 6), ylim = c(-6, 6),
col = "black", lwd = .5)
}
```

```
# License (MIT)
#
# Copyright (c) 2023 David O'Sullivan
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
```

© 2023 David O’Sullivan