[metrics-bugs] #25264 [Metrics/Website]: Decide what graph to display when there's no data to graph

Mon Mar 12 13:45:34 UTC 2018

#25264: Decide what graph to display when there's no data to graph
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 Reporter:  karsten          |          Owner:  metrics-team
     Type:  enhancement      |         Status:  new
 Priority:  Low              |      Milestone:
Component:  Metrics/Website  |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
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Comment (by iwakeh):

 For avoiding the 500 server error when trying to access the png (as
 reported in detail in #25468) an empty graph/png stating 'no data
 available for this parameter choice' should be generated.  Currently, the
 corresponding csv only contains the header.  Maybe, also add a comment
 here too in case no data is available.  It should be avoided to call R if
 there is no data available.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25264#comment:2>
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