Plot

PLOT example screen

When you first enter the plot function, the screen appears with the last 10 points in the file displayed as a default for plotting. You may then modify this point list to plot a different range of points. This point list will be automatically saved in a plot file with the same name as the project with a .PLT extension. This plot file will be automatically opened and displayed whenever you come back to the plot routine. Or you may create and open different named plot files. The plot will be automatically scaled so the entire plot fits the screen.
PLOT screen

File-Open
Allows you to select a different existing plot file.

File-New
To create a new plot file in addition to the default plot file, to store several different views of the same project.

File name:
The entry of a period and a File extension (part after the period) is not needed, the required extension of .PLT will automatically be attached to the file name.

Plot
Plots the currently displayed plot file. After the plot is displayed, this button changes to Edit, which will return you to the screen allowing you to edit the file. See the sample plot following.

Menu
Saves the plot file, and returns to the main menu.

How to write a point list

Enter the desired sequence of points, separated by spaces. A plot file may contain a maximum of 2000 characters. (you can have multiple plot files for different views on the same coordinate file, see File-Open and File-New.)

Following is a list of the plot commands with an explanation of their function.

(space)
A space must be included between each item in the list as a separator.

Pt#
Indicates the point number of a coordinate point to draw to.

Pt#-Pt#
Indicates a range of consecutive points to be drawn, For example, 1-6 will cause points 1 through 6 to be drawn.

. (period)
Indicates a pen lift-and-move. For example, 3 . 5 means that after plotting point 3, lift the pen and resume plotting at point 5.

– (negative)
Indicates a radius point of a curve. For example, the sequence 3 -4 5 means that point 4 is the radius point of a curve with Delta less than 180º passing through points 3 and 5. Thus, the point preceding the radius point is used as the P.C. and the point following the radius point is used as the P.T. If the P.T. is a negative number such as: 3 -4 -5 this indicates that the curve is to be drawn with a delta greater than 180º.

L
Turns on line drawing. (the default)

l (lower case L)
Turns lines off.

N
Turns on point numbering. (the default)

n (lower case n)
Turns point numbering off.

S
Used to define spiral curves in a road alignment. Follow the S by a space and the PI point number, then a space and the next PI number, then a space and the Spiral Length, then a space and the Radius of the curve. For example, S 2 3 225 1000. When plotted, it will show only lines connecting the PI’s, not the curve. You don’t need to compute the radius point, TS or ST points like in some programs, the program will do this for you automatically.

Once a L , l, N, or n command is specified, that value remains in effect throughout the entire plot file until a different command is used.

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