TIC COORDINATES

...TIC COORDINATES

Let Subcommand

Extract the current coordinates of the plot tic coordinates in either screen or data units.

There may be occasions where you would like to add some text to tic mark labels after generating a plot. This command can be used to extract the coordinate values of the tic marks from the most recent plot.

LET <y> = <prefix>TIC <SCREEN/DATA> COORDINATES
where
            the prefix X refers to lower horizontal axis;
            the prefix X1 refers to the lower horizontal axis;
            the prefix X2 refers to the upper horizontal axis;
            the prefix Y refers to the left vertical axis;
            the prefix Y1 refers to the left vertical axis;
            the prefix Y2 refers to the right vertical axis;
and where <y> is a response variable where the coordinates will be saved.

SCREEN returns the coordinates in 0 to 100 screen units and DATA returns the coordinates in data units of the most recent plot.

Note that this command has no input arguments.

LET YCOOR = YTIC SCREEN COORDINATES
LET YCOOR = YTIC DATA COORDINATES
LET YCOOR = Y1TIC SCREEN COORDINATES
LET XCOOR = XTIC SCREEN COORDINATES

If no coordinates are currently defined (e.g., no plot has been generated yet), the response variable will be returned with zero elements.

None

None

XFRAME	=	Return the frame limits for the x-axis.
YFRAME	=	Return the frame limits for the x-axis.

Plotting

2018/10

 
plot x**2 for x = 1 1 9
.
let youts = ytic screen coordinates
let youtd = ytic data   coordinates
let xouts = xtic screen coordinates
let xoutd = xtic data   coordinates
.
set write decimals 3
print youts youtd xouts xoutd
    

The following output is returned

------------------------------------------------------------
          YOUTS          YOUTD          XOUTS          XOUTD
------------------------------------------------------------
         20.000          0.000         15.000          1.000
         27.778         10.000         23.750          2.000
         35.556         20.000         32.500          3.000
         43.333         30.000         41.250          4.000
         51.111         40.000         50.000          5.000
         58.889         50.000         58.750          6.000
         66.667         60.000         67.500          7.000
         74.444         70.000         76.250          8.000
         82.222         80.000         85.000          9.000
         90.000         90.000          0.000          0.000