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This function is used by Ignition's Expression language.

Description

Calculates the mean (a.k.a average) for the numbers in the given column of the given dataset or the mean of a series of numbers specified as arguments. When looking up the mean in a dataset, the column may be specified as an index or as a column name. Any null values in the column are ignored. If there are no rows in the dataset, null is returned.

Syntax

mean(dataset, columnIndex)

  • Parameters

Dataset dataset - The dataset to use.

Integer columnIndex - The index of the column to use. Must be a column index of the provided dataset.

  • Returns

Integer/Float The mean of the values in that column.

Syntax

mean(dataset, columnName)

  • Parameters

Dataset dataset - The dataset to use.

String columnName - The name of the column to search through. Must match a column name in the provided dataset.

  • Returns

Integer/Float The mean of the values in that column.

Syntax

mean(value, [value, ...])

  • Parameters

Integer/Float value - A number. Can be as many values as needed. Can be either a float or an integer.

  • Returns

Integer/Float The mean of the values.

The following feature is new in Ignition version 8.1.8
Click here to check out the other new features

The following overload was added in 8.1.8:

Syntax

mean(sequence)

  • Parameters

Sequence sequence - A list, tuple, array, or set of numerical values. 

  • Returns

Integer/Float The mean of the values.

Examples
For example, suppose you had a table with this dataset in it:


ProductCode

Quantity

Weight

BAN_002

380

3.243

BAN_010

120

9.928

APL_000

125

1.287

FWL_220

322

7.889

Code Snippet
mean({Root Container.Table.data}, "Weight") //... would return 5.58675.
Code Snippet
mean(1,2,3) //... would return 2.
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