chapter 7

Question 1

plot( )

Answer 1

represents data graphically

Question 2

line plot

Answer 2

connects data points with lines, auto is using the element index as x and the stored value as y

Question 3

plot(x, y, ‘o’)

Answer 3

the o makes points visible

Question 4

axis([0, 10, 15, 50])

Answer 4

sets x limits (0-10) and y limits (15-50), apply after plot command

Question 5

yyaxis

Answer 5

enables dual y axis plotting on left and right sides

Question 6

loglog

Answer 6

plots logx and logy

Question 7

semilogy

Answer 7

plots log y and linear x

Question 8

semilogx

Answer 8

plots log x and linear y

Question 9

stairs

Answer 9

creates stair step graph

Question 10

grid

Answer 10

adds grid to the graph

Question 11

gtext

Answer 11

allows positioning of text with mouse

Question 12

figure(n)

Answer 12

makes figure number “n” for current plot

Question 13

hold on

Answer 13

allows multiple plots to superimpose on same axis

Question 14

hold off

Answer 14

releases current plot and allows new graph to be drawn

Question 15

close(n)

Answer 15

closes figure number n

Question 16

subplot(a, b, c)

Answer 16

creates a x b matrix of plots with figure c

Question 17

orient

Answer 17

specifies orientation and visuals of a graph

Question 18

Line Width

Answer 18

adjusts width of line to specifications

Question 19

[x, y] = ginput(nPoints)

Answer 19

takes n points from current plot and returns the x and y values in vector form