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Analysis Library Chapter 3
LabWindows/CVI Standard Libraries 3-34 © National Instruments Corporation
Parameters
Input
arrayXReal
double-precision
array
X coordinate.
arrayYImaginary
double-precision
array
Y coordinate.
numberofElements
integer Number of elements.
Output
magnitude
double-precision
array
Magnitude.
phaseRadians
double-precision
array
Phase (in radians).
Return Value
status
integer Refer to error codes in
Table 3-2.
ToRect
int status = ToRect (double magnitude, double phaseRadians, double *xReal,
double *yImaginary);
Purpose
Converts the polar coordinates (magnitude, phaseRadians) to rectangular coordinates (xReal,
yImaginary). The formulas used to obtain the rectangular coordinates are as follows.
x = mag * cos(phase)
y = mag * sin(phase)
Parameters
Input
magnitude
double-precision Magnitude.
phaseRadians
double-precision Phase (in radians).
Output
xReal
double-precision X coordinate.
yImaginary
double-precision Y coordinate.