Campbell Scientific CR3000 CR3000 Micrologger - Page 504

Appendix A. CRBasic Programming Instructions A.6.10.1 Histograms of the array. The results will be a running aerage of a spatial average on the various source array's elements. Randomize Initializes the random‐number generator. Syntax Randomize(source) RND Generates a random number. Syntax RND(source) Histogram Processes input data as either a standard histogram (frequency distribution) or a weighted‐value histogram. Syntax Histogram(BinSelect, DataType, DisableVar, Bins, Form, WtVal, LoLim, UpLim) Histogram4D Processes input data as either a standard histogram (frequency distribution) or a weighted‐value histogram of up to four dimensions. Syntax Histogram4D(BinSelect, Source, DataType, DisableVar, Bins1, Bins2, Bins3, Bins4, Form, WtVal, LoLim1, UpLim1, LoLim2, UpLim2, LoLim3, UpLim3, LoLim4, UpLim4) LevelCrossing Processes data into a one‐ or two‐dimensional histogram using a level‐crossing counting algorithm. Syntax LevelCrossing(Source, DataType, DisableVar, NumLevels, 2ndDim, CrossingArray, 2ndArray, Hysteresis, Option) RainFlow Processes data with the Rainflow counting algorithm, essential to estimating cumulative damage fatigue to components undergoing stress / strain cycles (see Downing S. D., Socie D. F. (1982) Simple Rainflow Counting Algorithms. International Journal of Fatigue Volume 4, Issue 1). Syntax RainFlow(Source, DataType, DisableVar, MeanBins, AmpBins, Lowlimit, Highlimit, MinAmp, Form) 504