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17.1.6 2D Frequency Counts/Binning

Introduction

The twoDBinning tool bins data having two variables (two dimensions). When this function is applied to data saved in two columns, a matrix with the counts in two dimensions will be created. If needed, a 3D bar graph and/or an image plot of the result can be generated to help visualize the distribution of data points.

Histogram - 3DBar.png

Handling Missing Values

The missing values in the X/Y data will be excluded in the analysis

Performing 2D Frequency Counts/Binning

To perform 2D binning:

  1. Select a Y column, or a range of Y data, in your worksheet (the other data column must be designated as an X column and, if unselected, should be the first X column to the left of the Y column).
  2. Select Statistics: Descriptive Statistics: 2D Frequency Counts/Binning. This opens the TwoDBinning dialog box.

When you run this procedure, Origin creates a set of bins in the X-Y plane, starting at the minimum X and Y values, by increment size. Origin records the number of XY pairs that fall within each bin and creates a matrix with output data. Coordinates of the output matrix consist of the extreme values and each cell displays the number of "hits" observed for each bin.

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