Note: If you wish to use any of the libraries noted below, then you will need to copy and paste the following commands in R first:

```
install.packages("install.load") # install the install.load package
library(install.load) # load the install.load package (library) which uses the install_load function to download and install the packages and their dependencies, if needed, and then loads the packages
# you will need to have GNU Octave (check the RcppOctave CRAN page for more details) installed on your system, then you can use the code below:
install_load("plot3D", "ggplot2", "pracma", "RcppOctave", "reshape2", "directlabels") # install and load the named packages and all of their dependencies, including the extra system dependencies (this process may take a while depending on the number of dependencies)
# Alternatively, if you already have the packages installed, then you can follow the following steps:
install.packages("install.load") # install the install.load package
library(install.load) # load the install.load package (library) which uses the load_package function to load the packages
load_package("plot3D", "ggplot2", "pracma", "RcppOctave", "reshape2", "directlabels") # load the packages
```

The following R code is incomplete as I am still searching for the best way to obtain the same plots in R as with GNU Octave/MATLAB. I posted this question - Q: r - mesh, meshz, surf, and contour plots similar to GNU Octave/MATLAB - online at Stack Overflow, but I have not received an answer yet. Please feel free to post an answer or leave comments. Thank you.

```
# Brockman 470 - 473
# Sources used in the R code
# Source 1
# Statistical tools for high-throughput data analysis (STHDA): Impressive package for 3D and 4D graph - R software and data visualization. See http://www.sthda.com/english/wiki/impressive-package-for-3d-and-4d-graph-r-software-and-data-visualization.
# Source 2
# Fifty ways to draw a volcano using package plot3D by Karline Soetaert. See https://cloud.r-project.org/web/packages/plot3D/vignettes/volcano.pdf.
# Source 3
# ggplot2 - R: How to Label Specific Contours using direct.label - Stack Overflow answered by a different ben on Jul 21 2014. See https://stackoverflow.com/questions/10675387/r-how-to-label-specific-contours-using-direct-label.
# Source 4
# R adding legend and directlabels to ggplot2 contour plot - Stack Overflow answered and edited by Sandy Muspratt on Jul 2 2016. See https://stackoverflow.com/questions/38154679/r-adding-legend-and-directlabels-to-ggplot2-contour-plot.
library(install.load)
load_package("plot3D", "pracma", "ggplot2", "reshape2", "directlabels") # load needed packages using the load_package function from the install.load package (it is assumed that you have already installed these packages)
source("https://raw.githubusercontent.com/ggrothendieck/gsubfn/master/R/list.R")
rho <- 1000
g <- 9.81
r_cylinder <- seq(15, 40, by = 5)
h <- seq(25, 50, by = 5)
# mesh plot
list[r_cylinder_grid, h_grid] <- meshgrid(r_cylinder, h)
W_grid <- rho * g * (pi * (r_cylinder_grid / 1000) ^ 2 * h_grid)
persp3D(r_cylinder_grid, h_grid, W_grid, xlab = "r_{cylinder}, mm", ylab = "h, m", zlab = "W, N", theta = 100, phi = -30, expand = 0.5, ticktype = "detailed", ltheta = 120, bty = "g", facets = FALSE, col = NULL) # Source 1 - 2
```

```
# meshz plot
# Not available
# surface plot
surf3D(r_cylinder_grid, h_grid, W_grid, xlab = "r_{cylinder}, mm", ylab = "h, m", zlab = "W, N", theta = 100, phi = -30, expand = 0.5, ticktype = "detailed", ltheta = 120, bty = "g", col = gg.col(50)) # Source 1
```