How do I retrieve coordinate break value (Tilt About X) from a particular surface number using GETVARDATA operand in a ZPL macro?

# How do I retrieve coordinate break tilt about x data using GETVARDATA operand in a ZPL macro?

Hi Victoria,

I don’t think you can easily specify the surface number with this method. Instead, GETVARDATA works on the number of variables. Here is a dummy example:

In this example, I have 3 variables: Decenter X, Decenter Y, and Tilt About X. Tilt About X is the third variable. Therefore, I can use the following ZPL macro:

`# Get variable data in VEC1`

GETVARDATA 1

# Print third variable value (3 x 5 = 15)

print VEC1(15)

Variable values are multiples of five. 5 is the value of the first variable, 10 the second, and 15 the third, as documented in the Help File (The Programming Tab > About the ZPL > KEYWORDS (about the zpl) > GETVARDATA). The result is as follow:

If you want the Tilt About X parameter of a specific Coordinate Break surface, why don’t you use the numeric function PARM(<parameter_number>, <surface_number>). This function returns the specified surface parameter value. In the same dummy example you can simply write:

`PRINT PARM(3, 2)`

And it should give you the same result. Note that 3 is the parameter number ( Tilt About X ) and 2 is the surface number.

GETVARDATA returns the surface number associated with each variable, and you could have a for loop that checks whether it matches your specified surface, something like so:

# Target Surface

surface = 2

# Target Parameter

parameter = 3

# Number of variables

num_of_var = VEC1(0)

# Loop over all variables data

FOR ii, 1, num_of_var, 1

# Surface of variable

surf_of_var = VEC1( ii * 5 - 3 )

# Parameter of variable

par_of_var = VEC1( ii * 5 - 2 )

# Test if surface and parameter match

IF ( surface == surf_of_var )

IF ( parameter == par_of_var )

# Print matching variable value

FORMAT 2 INT

PRINT "Surface ", surface,

PRINT ", Parameter ", parameter,

FORMAT 5.5

PRINT ": ", VEC1( ii * 5 )

ENDIF

ENDIF

NEXT

But I think its quite heavier than PARM.

I hope this helps.

Take care,

David

Thank you!

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