MinSpa (Minimum Spatial)
The MinSpa function is used to find the minimum value in an array.
Syntax
MinSpa ( Dest, Swath, Source )
Example
This example uses MinSpa to find the minimum value of five elements, Temp(1) through Temp(3). The spatial minimum is stored in MinTemp(1) and the element number of the value is stored in MinTemp(2)
'CR6 Datalogger
Public Temp(3), TRef, MinTemp(2)
BeginProg
Scan( 100, mSec, 1, 0 )
TCDiff (Temp(),3,mv200C,U1,TypeT,Tref,True,0,15000,1.8,32)
MinSpa(MinTemp(),3,Temp())
NextScan
EndProg
Remarks
The MinSpa function finds the minimum value and its location in the given Source array and places the results in the variable array named in Dest. Source and/or Dest can be a Float or Long data type, but not a String.
If a NAN Not a number. A data word indicating a measurement or processing error. Voltage overrange, SDI-12 sensor error, and undefined mathematical results can produce NAN. is returned by the datalogger it is not included in the spatial minimum.
Parameters
Dest (Destination)
The Variable in which to store the results of the instruction. Right-click the parameter to display a list of defined variables.
If this instruction has a Repetitions parameter and it is greater than 1, the results are stored in an array with the variable name. The array must be dimensioned large enough to hold all of the values returned from all of the Reps.
Type: Variable or Array
For the MinSpa function, the Dest variable must be dimensioned to 2. Dest(1) will contain the value and Dest(2) will contain the location.
Swath
The number of values of the array over which to perform the specified operation.
Type: Constant (or expression that evaluates as a constant)
Source
The name of the Variable that is the input for the instruction. Right-click the parameter to display a list of defined variables.
Type: Variable