Special Tab

Use the Special tab to access a range of specialized functions used in mathematical expressions.

Tooltips are available for each tab item, showing the required argument and a brief description.

Special Tab options 

Button

Syntax

Definition

Math Functions

min(,) Returns the minimum value of two channels for each row.

max(,)

Returns the maximum value of two channels for each row.

div(,)

Performs integer division of two channels per row.

  • For floating-point division, use / from the Common Keys.

  • If division by zero occurs, the result is set to DUMMY.

  • If either input is DUMMY, the output is DUMMY.

sign(,)

Transfers the sign of the fist argument to the second. Examples:

SIGN(-1,10) = -10
              
SIGN(-1,-10) = -10
              
SIGN(1,10) = 10
              
SIGN(1,-10) = 10

ceil()

Returns the next highest whole value of the specified channel.

floor()  

Returns the next lowest whole value of the specified channel.

abs()

Returns the absolute value of the specified channel.

round()

Rounds the value of the specified channel to the nearest whole value.

Data Functions

window(,,) 

The leftmost argument is a channel, while arguments 2 & 3 define the minimum and maximum of a range. Values outside the defined range (min, max) are set to DUMMY.

clip(,,) 

The leftmost argument is a channel, while arguments 2 & 3 define the minimum and maximum of a range. Values outside the range are replaced with the nearest boundary value (min or max).

Miscellaneous

randbetween (,)

Generates random numbers between the specified minimum and maximum values. To create a new channel and populate it with random values, you must indicate the channel used to derive fiducial information (start & increment). This is done by specifying the base channel at the end of the equation after the semicolon:

C0=ranbetween(1,100);C1

This expression creates channel C0 with values aligned to the same fiducials as C1.

Application Notes

If the output channel does not already exist, and the expression doesn’t reference another channel with required attributes (start fiducial, increment, data type), you’ll be prompted to specify a master channel from which to extract these details.

See Also: