@viezel opened this Issue on January 22nd 2020

Since Segments cannot be used as filter anymore (see https://github.com/matomo-org/matomo/issues/15163) Then I put forward this high priority feature request to add full feature support for Filtering. Suggesting Custom Reports plugin as a solution for this feature is not an option. This feature must be part of the core offering.

Most modern web application are data driven and as part of its value proposition it will create dashboard, reports etc to inform its users of the usage of their offering. Building user defined reports/views/dashboards based on user interactions will include filtering, as the user want to see exact results. Filtering and segmentation is the essentials features of any Analytics platform. Hence, we must build this missing feature at its highest priority.

How

As Matomo also advertise to be a replacement of Google Analytics, then lets see what they do:

Filtered queries restrict the rows that do (or do not) get included in the result. Each row in the result is tested against the filter: if the filter matches, the row is retained and if it doesn't match, the row is dropped.

Dimension filtering: Filtering occurs before any dimensions are aggregated, so that the returned metrics represent the total for only the relevant dimensions.

  • Metrics filtering: Filtering on metrics occurs after the metrics are aggregated.
  • Valid combinations: You can filter for a dimension or metric that is not part of your query, provided all dimensions/metrics in the request and the filter are valid combinations. For example, you might want to query for a dated list of pageviews, filtering on a particular browser.

Source: https://developers.google.com/analytics/devguides/reporting/core/v3/reference#filters

For rich possibilities of Filtering the massive amount of data a regular website/app gets, we need the following operators:

Metric Filter Operators

Operator Description
== Equals
!= Does not equal
> Greater than
< Less than
>= Greater than or equal to
<= Less than or equal to

Dimension Filter Operators

Operator Description
== Exact match
!= Does not match
=@ Contains substring
!@ Does not contain substring
=~ Contains a match for the regular expression
!~ Does not match regular expression

It would be a big plus if we could get support for Regular expression in those filters.

Filter Syntax

Given the fact that Segments are alreadty supported, we only need to invent a filter parameter.

metric_dimension_name operator expression

Example:

filter=referrerName==Google,referrerName==Bing;country==IN
@Chardonneaur commented on April 2nd 2020

Silly remark, though wouldn't it be the same feature as the shortcut one in Google Analytics? So to say applying a filter gives you the possibility to save it and to make it as custom report (though you won't have the possibility to add additional columns)

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