Questions

If we have followed this chapter closely, by now, we should be able to answer the following questions:

• How do users install R?
• What are the basic data types in R?
• How can users work with these different types of data in R?
• How would users loop through a number of values in R?
• How would users write a function in R? 
• What are lapply, sapply, and tapply and how are they used in R?
• How is data plotted in R?
• How do users install QGIS?
• How can users explore an attribute table in QGIS?
• How can users add vector (and raster) data in QGIS?
• How can users install plugins in QGIS?