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Macro Reference
467
8
Appendices
Vision System FH/FZ5 Series
User’s Manual (Z340)
Dposline
Gets the shortest distance between the line and point.
Format
Dposline (<x>, <y>, <line()>)
Parameter
Return value
Returns the shortest distance as a double precision real number value.
Description
Gets the shortest distance between the point that has the X coordinate specified in the <x> parameter and
the Y coordinate specified in the <y> parameter, and the line component specified in the <line()> parameter.
In the <line()> parameter, specify a 1D double precision real number array with "a" in element 0, "b" in
element 1, and "c" in element 2, where a, b, and c satisfy the linear equation ax + by + c = 0, without adding
element numbers but adding () to the variables.
This macro function is mainly used to get the deviation and distribution from an origin point for a line gotten
with the Lsqumeth function.
If an undefined array is specified a parameter, an "Undefined label" error will occur.
If an incorrect data type is specified for a parameter, a "Type mismatch" error will occur.
If a non-existent number, numerical value, or combination of data types or values are specified for a
parameter, an "Illegal function call" error will occur.
If a value is assigned to the return value variable or the variable is not used in an expression, a "Syntax error"
error will occur.
If the format is written incorrectly, such as writing the macro function name incorrectly, omitting a comma, or
omitting a half-width space, a "Syntax error" error will occur.
Usage Cautions
• None.
Parameter
name
Data type Description
<x>
Double
precision real
number data
type
X coordinate of the points to get the distance
<y>
Double
precision real
number data
type
Y coordinate of the points to get the distance
<line()>
Double
precision real
number array
Straight line component of the straight line to get the distance
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