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Vizlib Gantt Troubleshooting - Best Practice, Known Issues, FAQ

When you're working with Vizlib Gantt it's important to be clear about what you can and can't do. We've collected together some tips for best practice when creating visualizations, along with any known issues and limitations you might need to know about. You can find a full list of all our support materials on the Introduction page.   


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Best Practice


Vizlib Gantt is designed to be as easy for you to use as possible, but we've listed some best practice tips here to help you get started, and carry on working efficiently. 


  • Know your data model - you'll need to apply the data model script used by Vizlib Gantt before you start using it. When you're creating your chart, you'll be asked to confirm a start date and end date, so check these fields have the values you want. 
  • Work with the wizard - the wizard will help you set up and edit your Gantt chart, and the preview function lets you check the chart appearance as you go along. If you do find the chart appearance isn't what you expected, reviewing the Timeline settings should help you, or if you have a chart where more than one event is displayed on a single row, you can enable Cascading Events to choose an event and display it as a group.
  • Manage your event numbers - Vizlib Gantt runs using the Qlik Sense hub engine, and each individual event value (e.g. an event color setting) is processed separately.  While up to 2000 event values can be added to a chart, we've found that if more than 500 separate event values are added to a Vizlib Gantt chart, it can slow down performance. You're free to add more, but we advise you to keep this in mind. Having defined settings for related values (e.g. grouping color settings) may also help as it will reduce Qlik Sense engine processing time. We've compiled some advice about improving performance in Qlik Sense here. 


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Known Issues


We currently have no known issues reported in connection with Vizlib Gantt.


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K
Kenneth is the author of this solution article.

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