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### R BASICS WORKSHOP                                                        ###
### EXERCISE 2.3: Packages for spatial analysis.                              ###
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### Center for Conservation and Sustainable Development                      ###
### Missouri Botanical Garden                                                ###
### Website: rbasicsworkshop.weebly.com                                      ###
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## OBJECTIVE
## The goal of this exercise is to start familiarizing yourself with packages
## of R designed for spatial data analysis.

## TASK 1: what packages does the "TASK VIEW" on spatial data analysis include?

## TASK 2: install the "sp" package, load it into your R session (using the
## function *library*). This is one of the most important packages for
## spatial data analysis. Later in the workshop we will see how to
## use it. For now, load one of the databases included in the
## package "sp", named "meuse.riv". Read the help page for this database.
## What does the "meuse.riv" database contain?

## TASK 3: read the first two lines under the examples section of the
## help page for the "meuse.riv" database, and create a graph that
## show the course of the river.

## TASK 4: Install the "terra" package, load it into your R session (using
#E the function *library*). Now go to the package help page with
## the following code:
help("terra-package")
## What is the "terra" package for?

## TASK 5: Find, at the bottom of the "terra" package help page, the
## link to the index of functions included in this package. Follow that link
## and find the function *rast*. What is this function for?