Charts Tutorials

Annotation Chart in Google Charts

Annotation Chart



Annotation charts are interactive time series line charts that support annotations. It is used to highlight specific data or add contextual notes inside the visualization


Steps for adding Google Annotation Charts to your Website:-


  • To use Google Annotation Charts on your website, add a link to the charts loader.
  • After this, add a div with a unique id. Then, we have to load Google Graph API.
  • Load the Visualization API with the desired package name. In our case, it is "annotationchart".
  • Set a callback function.
  • The visualization API is:- google.charts.load('current', {'packages':['annotationchart']})
  • The callback function will be:- google.charts.setOnLoadCallback(draw_my_chart)

Code Explanation

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