Graphics in R

Question 1

This is often conceptually simpler and allows plotting to mirror the thought process.

Answer 1

Base Graphics

Question 2

This combines the concepts from both base and lattice graphics but uses an independent implementation.

Answer 2

ggplot2

Question 3

In base graphics, we can see the history of a data by using what function?

Answer 3

hist

Question 4

We use this function to make the data more appealing

Answer 4

colors

Question 5

In plotting data, what function do we need to use?

Answer 5

plot

Question 6

What is the syntax of plot?

Answer 6

plot(x = <x>, y = <y>)</y></x>

Question 7

This code is used as a plotting symbol

Answer 7

pch

Question 8

the line width, specified as an integer multiple

Answer 8

lwd

Question 9

the plotting color,Specified as a number, string, or hex code.

Answer 9

col

Question 10

character string for the x-axis.

Answer 10

xlab

Question 11

character string for the y-axis.

Answer 11

ylab

Question 12

This code is used for the line type (default as solid line).

Answer 12

lty

Question 13

This function is used to specify global graphics parameters that affects all plots in an R session.

Answer 13

par

Question 14

Number of plots per row (plots are filled row-wise)

Answer 14

mfrow

Question 15

Number of plots per row(plots are filled column-wise)

Answer 15

mfcol

Question 16

The background color

Answer 16

bg

Question 17

The outer margin size

Answer 17

oma

Question 18

The margin size

Answer 18

mar

Question 19

the orientation of the axis labels on the plot

Answer 19

las

Question 20

This function is similar to plot but with many built-in features.

Answer 20

qplot

Question 21

This plot is for complex customization

Answer 21

ggplot

Question 22

A great way to display categorical variables or discrete quantitative variables.

Answer 22

Bar chart

Question 23

Components of a ggplot

Answer 23

Data frame, aesthetic mappings, geoms, facets, stats, scales, and coordinate system.

Question 24

For conditional plots

Answer 24

facets

Question 25

statistical transformation like binning, quantiles, smoothing

Answer 25

stats

Question 26

what scale an aesthetic map uses?

Answer 26

scales

Question 27

How data are mapped to color, size, etc.

Answer 27

Aesthetic mappings

Question 28

Three layers on how plots are built.

Answer 28

Plot the data, overlay summary, metadata and annotation

Question 29

This function is used in constructing aesthetic mappings.

Answer 29

aes

Question 30

All ggplot2 plots begin with a call to ggplot(), supplying default data and aesthethic mappings, specified by aes(). You then add layers, scales, coords and facets with +.

Answer 30

Plot basics

Question 31

plot title

Answer 31

main

Question 32

number of breakpoints or can be a vector of breakpoints

Answer 32

breaks

Question 33

Character vector specifying _____ to use. Defaults to ”point” if x and y are specified, and ”histogram” if only x is specified. It accepts ”point”, ”line”, ”smooth”, ”boxplot”.

Answer 33

geom