The SQRT function simply returns the square root of whatever input data is given.
Defines the time series data fed into the function. This can be a sensor ID or another function.
*Input data is optional in most cases. If Info360 detects that the first input is time series data, it will be applied to the function. Otherwise, the current active sensor's data will be used, which is often the case in Reference Charts.
Example Usage as an Expression:
SQRT() - Returns the square root of the current data stream
SQRT(Var(12)) = StdDev(12) - Returns the square root of the variance of the last 12 values, which is equal to the StdDev of the past 12 values.
Examples Reference Chart:
The following example shows a measured signal compared to its SQRT(), raised to the Power 2, and raised to the Power 3.
Notice that SQRT becomes undefined when the input is negative since Info360 does not handle non-real numbers.
When the input is 1, all values are equal, when negative, the Power 2 results are positive and Power 3 are negative.
For information on setting up custom equations and syntax, please refer to Analytical Functions.