Chart.js: [FEATURE] Gantt Charts

[JSchrepp]

With the inclusion of Moment.js, it feels odd not to have even the bare bones such a time-oriented chart available. Horizontal bars don't quite do the job, even with a Moment.js-based time axis.

I realize this is a rather large feature request.

Expected Behavior

• Gantt should be an available choice for chart type under the config.
• Each dataset would represent a row in the Gantt chart.
• Datasets would contain the Moment ranges that are being displayed.
• Background/border color lists would determine each section of the row in the chart that is filled in.

[etimberg]

I think this request is best implemented as an external plugin. The specialized logic for this will make the core too big

[cjarv]

Hi guys,
This is exactly the feature I am looking for and am currently trying to create it out of a stacked bar chart, but @JSchrepp is right its a bit cumbersome. Having the ability to have it stackable with milestones would be very useful. So I guess integrating it into mixed charts would probably do this. Just a thought. Cheers guys!

[thomasjoscht]

Hey,

+1 for this extension. I'm also at the point to visualize a Gantt chart. The hack via horizontal bar does work with some limitations:

• Multiple bars in one row are very insufficient.
• Problems with tooltip visibility.

Regards Thomas

[cjarv]

@thomasjoscht
Not sure if this helps but here is what I did based on another post. The line chart made it a lot easier to grab tooltips. Im new to Javascript but it seems to be working out if I hide the Legend. https://jsfiddle.net/c_jarv/cb47aejn/

[thomasjoscht]

My use case is an overview of job executions of last 24 hours. With some additional coding I could solve my main problems. But solution still smells. Here is a simple sample https://jsfiddle.net/Lq3aptph/.

• Multiple bars are possible. But this requires two additional datasets per bar. In summary there must exist 2 times maximum of bars per row (job in my case).
• Tooltip problem with filtering requires also a custom tooltip with adjustment of some styles.

Problems:

• Scalability is bad for increasing horizont (from last 24 Hours to 30 days f.e.)
• Colorizing bars with some information (f.e. success=green, failed=red) is very hard and requires much more datasets.
• Label information of overlapped jobs (started out of horizont) could not be displayed correctly. Therefore only jobs started in horizont could be displayed now.

Further considerations could be to use a scatter chart instead. But my first tries were not sufficient.

[mojimi]

+1 for a Gantt plugin, it's the only thing missing in my opinion, Google Charts gantt is terribly outdated

[FalcoGer]

I'd like that as well. I don't want to drag in another library.

[etimberg]

Closing since this isn't a feature that will be in the core library