Page 12-32
•
Press
@CANCL
to return to the PLOT WINDOW environment. Then, press
$
, or
L
@@@OK@@@
, to return to normal calculator display.
The number of bars to be plotted determines the width of the bar. The H- and
V-VIEW are set to 10, by default. We changed the V-VIEW to better
accommodate the maximum value in column 1 of
Σ
DAT. Bar plots are useful
when plotting categorical (i.e., non-numerical) data.
Suppose that you want to plot the data in column 2 of the
Σ
DAT matrix:
•
Press
„ô
, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
•
Press
˜˜
to highlight the
Col:
field and type 2
@@@OK@@@
, followed by
L
@@@OK@@@
.
•
Press
„ò
, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
•
Change V-View to read
V-View: 0 6
•
Press
@ERASE @DRAW
.
•
Press
@CANCL
to return to the PLOT WINDOW screen, then
$
to return
to normal calculator display.
Scatter plots
We will use the same
Σ
DAT matrix to produce scatter plots. First, we will plot
the values of y vs. x, then those of y vs. z, as follows:
•
Press
„ô
, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
•
Change
TYPE
to
Scatter
.