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Matomo API Funktion ImageGraph not generating nb_uniq_visitors on period month #18976

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Makathen opened this issue Mar 21, 2022 · 3 comments
Open

Matomo API Funktion ImageGraph not generating nb_uniq_visitors on period month #18976

Makathen opened this issue Mar 21, 2022 · 3 comments
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Bug For errors / faults / flaws / inconsistencies etc.
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For Prioritization

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@Makathen
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When using the API for our Matomo we wanted to generate an ImageGraph with the folowing API call that represents the uniqe Visitors, the visits and the pageviews:

OurURL/index.php?module=API&method=ImageGraph.get&idSite=1&apiModule=API&apiAction=get&period=month&token_auth=OurToken&date=2021-01-01,2021-12-31&columns=nb_visits,nb_pageviews,nb_uniq_visitors

Expected Behaviour

The ImageGraph is generated.

Actual Behaviour

Getting an error message that nb_uniq_visitors was not found in the report.

When using period=day the graph gets generated. On the Dashboard, of our Matomo Site, the graph set to period month is also generated normaly.

Is this a potential Bug or is the setting for month just not supported for the API call?
@sgiehl
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sgiehl commented Mar 21, 2022

@Makathen Thanks for creating this issue. The unique visitor metric actually should be available for this report.
I was able to reproduce that locally but couldn't quickly to sort out, why the graph can't display it.
The report API.get is actually a very special one, as it tries to combine all other available get reports. Maybe the column gets unavailable while combining those reports. Guess we need to investigate that further.

@sgiehl sgiehl added the Bug For errors / faults / flaws / inconsistencies etc. label Mar 21, 2022
@Makathen
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Also I just found that if you call the API.get Method without the ImageGraph and period set to month for example:
OurURL?module=API&method=API.get&idSite=1&period=month&date=2022-01-01&format=Json&token_auth=OutToken&showColumns=nb_uniq_visitors,nb_visits,nb_pageviews
the nb_uniq_visitors is shown. But when the period is set to year it disapears again.

@sgiehl
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sgiehl commented Mar 23, 2022

Unique visitors metrics are not calculated for years by default. This behavior can be changed by setting enable_processing_unique_visitors_year = 1 in the config. But that can slow down the archiving a lot.

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@sgiehl @Makathen @innocraft-automation