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Chapter 15:
Picture Plot Application
Picture Plot is an application that lets you plot points (that represent
coordinates) on a photograph, illustration, or other graphic and perform various
types of analysis based on the plotted data (coordinate values).
The photograph to the right, for example, shows a uniquely curved bridge.
The plane of the frontmost edge of the bridge is treaded as the
plane, and the left side base of the bridge is treated as the origin (0, 0). This
makes it possible to express any point on along the edge of the bridge floor as
x
y
a coordinate (
,
).
The Picture Plot plot function makes it easy to plot points on a photograph such as this or some other image,
and extract the coordinate values of the plots.
You can use the plots to perform the following types of operations.
• Register and graph a
• Perform regression calculation based on the plotted coordinate values and draw a regression graph that
overlays the plots. This makes it possible to produce the mathematical expression and graph of a path of
movement.
t
• Add time values (
) to the coordinate values (
possible to produce the mathematical expressions and graphs of the correlation between horizontal direction
movement and time, and the correlation between vertical direction movement and time.
Plotting points
y
f
x
=
(
) form equation and overlay it on a photograph and plot.
x
y
-
coordinate plot
regression graph example
xy
coordinate
Coordinates (Plot List window)
x
y
,
) and plot points on the
t
x
-
regression graph example
Chapter 15: Picture Plot Application 257
t
x
t
y
-
plane or
-
plane. This makes it
coordinate plot
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