highcharts - Indicate an important date on a chart with either a guideline (with text) or an opened callout -

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i'm looking way indicate key dates on highchart label eg public holiday. can't find way add labeled guidelines or add opened callout point? appreciated.

in highstock have series type called flags opened callout (similar dygraphs annotation). closest fit indicators referred. see this jsfiddle example of how looks. note how example uses highstock source file, builds highcharts chart. see this documentation official information.

in highcharts can highlight points, labels , value in wide variety of ways. first of can add data labels points, renders text next it. secondly can use plot lines highlight values along axis. see this jsfiddle example of how both of these options can used.

of course there lots of ways improve , build upon out of box functionality, specific demands , desires.


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