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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