Scale1D
Advanced Analysis Library Only
AnalysisLibErrType Scale1D (double inputArray[], ssize_t numberOfElements, double outputArray[], double *offsetValue, double *scalingFactor);
Purpose
Scales the input array and returns the scale and offset constants. The scaled output array is in the range [–1:1]. Scale1D can obtain the ith element of the scaled array using the following formulas:
offset = min + scale
where max and min are the maximum and minimum values in the input array, respectively.
You can use LinEv1D to reconstruct the input array using the scale and offset constants. Scale1D can perform the operation in place; that is, the input and output arrays can be the same.
The following example uses the Scale1D function.
double inputData[10], scaledData[10];
double offset, scalingFactor;
AnalysisLibErrType status;
// Generate an array of random numbers
status = Uniform (10, 17, inputData);
status = Scale1D(inputData, 10, scaledData, &offset, &scalingFactor);
Parameters
| Input | ||
| Name | Type | Description |
| inputArray | double [] | Input array used as the basis for the scaling operation. |
| numberOfElements | ssize_t | Number of elements used to perform the scaling operation. |
| Output | ||
| Name | Type | Description |
| outputArray | double [] | Scaled array. |
| offsetValue | double | Offsetting constant of the input array. |
| scalingFactor | double | Scaling constant of 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