Uncertainty and UncertaintyTable (Macro Commands)
Uncertainty h, Q, T_s=A1.5, Vel=R0.01 T_inf=Au_Tinf
Initiate the Uncertainty Propagation calculations to determine the uncertainty in variables h and Q as a result of uncertainties in variables T_s, Vel and T_infinity. Note that measured values are identified with an =A or =R following their name. In this example, the uncertainty in variable T_s is 1.5 on an absolute (A) basis. The uncertainty in variable Vel is 0.01 of its current value (relative basis). The absolute uncertainty in variable T_inf is equal to the value of variable u_Tinf, which must be set to a constant in the Equations window. Note that the designation Ru_Tinf would set the uncertainty of variable T_inf in a relative manner so that its uncertainty would be the product of its current value and the value of u_Tinf.
UncertaintyTable /S /U /R 'Table 1' Rows=1..10 h, Q, T_s=A1, Vel=R0.01 T_inf=Au_Tinf
Initiate the UncertaintyTable calculations to determine the uncertainty in variables h and Q as a result of uncertainties in variables T_s, Vel, and T_inf. Measured variables (here T_s, Vel and T_inf) are identified with =A or =R following their names. A indicates absolute uncertainty and R indicates relative uncertainty. The absolute or relative uncertainty is indicated with a numerical value or with a variable name following the A or R. Note that if a variable is name is indicated, the variable must be set to a value in the Equations window or in the Parametric table. Variables without an = following their name are assumed to be calculated values. All of the variables should be in the specified Parametric Table. If /U is provided, the guess values will be updated after each row of the table successfully completes calculations. If /R is provided the calculations will be start on the last row and proceed to the first row of the specified range. If /S is provided the calculations will stop if an error is encountered and remaining rows of the table will not be processed.