QScale1D
Advanced Analysis Library Only
AnalysisLibErrType QScale1D (double inputArray[], ssize_t numberOfElements, double outputArray[], double *scalingFactor);
Purpose
Finds the maximum absolute value in the array and produces a scaled array. QScale1D can obtain the ith element of the scaled array using the following formula:
where scalingFactor is the maximum absolute value in the input array.
QScale1D determines the constant scale.
Use this function instead of Scale1D, particularly if the expected mean value is 0. QScale1D can perform the operation in place; that is, the input and output arrays can be the same.
The following example uses the QScale1D function.
double inputData[10], scaledData[10];
double scalingFactor;
AnalysisLibErrType status;
// Generate an array of random numbers
status = Uniform (10, 17, inputData);
status = QScale1D(inputData, 10, scaledData, &scalingFactor);
Parameters
| Input | ||
| Name | Type | Description |
| inputArray | double [] | Input array used as the basis for quick scaling. |
| numberOfElements | ssize_t | Number of elements used to scale the input array. |
| Output | ||
| Name | Type | Description |
| outputArray | double [] | Scaled array. |
| scalingFactor | double | Maximum absolute value in the input array. |
Return Value
| Name | Type | Description |
| status | AnalysisLibErrType | A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants. |
Additional Information
Library: Advanced Analysis Library
Include file: analysis.h
LabWindows/CVI compatibility: LabWindows/CVI 3.1 and later