Extra Data Points on Measurement Studio Graph Primary Software: Measurement Studio>>Standard Edition (Starter Kit)Primary Software Version: 6.0 Primary Software Fixed Version: N/A Secondary Software: N/A
Problem: While using Microsoft Visual Basic to plot data points on a Measurement Studio graph, I keep getting extra data points at the end of my graph. I plotted the data in Microsoft Excel to make sure that it is not corrupted and everything is fine. Why are these extra data points appearing? Solution: This behavior is a result of declaring an array to contain more points than the number of data points actually stored. When elements in an array are uninitialized, their default values are used. For example, numeric values use 0 and string data values use " ".
With Visual Basic arrays, the index of each dimension is zero-based, which means the array ranges from 0 through its upper bound. The code, Dim y(25) as Double, creates an array of 26 elements that will range from y(0) – y(25).
Therefore, when creating an array of n elements, define the array size to be n-1.
Refer to the Attachments section for demonstrations of this concept and refer to the Related Links section for more information about array size declaration. Related Links: MSDN Library: Array Size Declaration for Visual Basic Users Attachments:
Report Date: 06/28/2006 Last Updated: 04/16/2007 Document ID: 3YRF53T3 |
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