Chapter 15: Picture Plot Application  257
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
xy coordinate
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
a coordinate (x, y).
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.
Plotting points Coordinates (Plot List window)
You can use the plots to perform the following types of operations.
• Register and graph a
y = f (x) form equation and overlay it on a photograph and plot.
• 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.
• Add time values (
t) to the coordinate values (x, y) and plot points on the t-x plane or t-y plane. This makes it
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.
x-y coordinate plot
regression graph example
t-x coordinate plot
regression graph example
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