User`s guide

5- 18 Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1
Built-in Programming Tool
Read-out Functions
• If the X and Yn axes are both linear scale:
 = (y
1
-y
0
) / (x
1
-x
0
)
• If the X axis is log scale, and the Yn axis is linear scale:
 = (y
1
-y
0
) / (log x
1
- log x
0
)
• If the X axis is linear scale, and the Yn axis is log scale:
 = (log y
1
-log y
0
) / (x
1
-x
0
)
• If the X and Yn axes are both log scale:
 = (log y
1
-log y
0
) / (log x
1
- log x
0
)
where,
 : Slope of Line m
x
0
, y
0
, x
1
, y
1
: X and Y coordinate values at the two points where Line m
intercepts the perimeter of the plotting area.
@LmX Returns the X intercept value (Y=0) of Line m (m: 1 or 2).
If Line m is horizontal, this function returns invalid data.
@LmY Returns the Y intercept value (X=0) of Line m (m: 1 or 2).
If there are two Y axes, this function returns the value for the selected axis.
If Line m is vertical, this function returns invalid data.
@LmYn Returns the Yn (n: 1 to 8) intercept value (X=0) of Line m (m: 1 or 2).
If Line m is vertical, this function returns invalid data.
Functions for Two Line Display
@IX Returns the value of the X coordinate at the intersection of Line 1 and Line 2.
This function calculates the intersection by using the following formula.
X =(y
2
-y
1
)/(
2
-
1
)
where,
X : Value of the X coordinate at the intersection. If the X axis is log scale,
this function returns 10
X
.