Dimension

Dimensions are attributes of your data. For example, the dimension city indicates the city from which an event originates. Dimension values in report responses are strings; for example, city could be "Paris" or "New York". Requests are allowed up to 8 dimensions.

JSON representation 
{
  "name": string,
  "dimensionExpression": {
    object (DimensionExpression)
  }
}
Fields
name

string

The name of the dimension. See the API Dimensions for the list of dimension names.

If dimensionExpression is specified, name can be any string that you would like. For example if a dimensionExpression concatenates country and city, you could call that dimension countryAndCity.

Dimensions are referenced by name in dimensionFilter, orderBys, dimensionExpression, and pivots.
dimensionExpression

object (DimensionExpression)

One dimension can be the result of an expression of multiple dimensions. For example, dimension "country, city": concatenate(country, ", ", city).

DimensionExpression

Used to express a dimension which is the result of a formula of multiple dimensions. Example usages: 1) lowerCase(dimension) 2) concatenate(dimension1, symbol, dimension2).

JSON representation 
{

  // Union field one_expression can be only one of the following:
  "lowerCase": {
    object (CaseExpression)
  },
  "upperCase": {
    object (CaseExpression)
  },
  "concatenate": {
    object (ConcatenateExpression)
  }
  // End of list of possible types for union field one_expression.
}
Fields
Union field one_expression. Specify one type of dimension expression for DimensionExpression. one_expression can be only one of the following:
lowerCase

object (CaseExpression)

Used to convert a dimension value to lower case.
upperCase

object (CaseExpression)

Used to convert a dimension value to upper case.
concatenate

object (ConcatenateExpression)

Used to combine dimension values to a single dimension. For example, dimension "country, city": concatenate(country, ", ", city).

CaseExpression

Used to convert a dimension value to a single case.

JSON representation 
{
  "dimensionName": string
}
Fields
dimensionName

string

Name of a dimension. The name must refer back to a name in dimensions field of the request.

ConcatenateExpression

Used to combine dimension values to a single dimension.

JSON representation 
{
  "dimensionNames": [
    string
  ],
  "delimiter": string
}
Fields
dimensionNames[]

string

Names of dimensions. The names must refer back to names in the dimensions field of the request.
delimiter

string

The delimiter placed between dimension names.

Delimiters are often single characters such as "|" or "," but can be longer strings. If a dimension value contains the delimiter, both will be present in response with no distinction. For example if dimension 1 value = "US,FR", dimension 2 value = "JP", and delimiter = ",", then the response will contain "US,FR,JP".