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microsoft / powerbi-visuals-gantt

A Gantt chart is a type of bar chart which illustrates a project timeline or schedule. The Gantt Chart visual shows the Tasks, Start Dates, Durations, % Complete, and Resources for a project. The Gantt Chart visual can be used to show current schedule status using percent-complete shadings and a vertical "TODAY" line. The Legend may be used to group or filter tasks based upon data values.
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Overlapping taskbars. #216

Open bhai-ali opened 4 years ago

bhai-ali commented 4 years ago

Hello,

I am working on a gantt chart timeline, grouped by task, and am finding that the ends of the taskbars are overlapping (Picture below) even tough the date/time format of the source are distinct and should have no overlap.

The only way I don't see any overlap is when I change the data type from day to seconds. Is this a limitation of the software or is there a setting I can change in the formatting.

Thank you for your help in advance and for the development of a great tool!

Thank you! Taskbars overlapping

helen508light commented 4 years ago

@bhai-ali Now there is no option to adjust rounder part. Width and rounded corner depends on data and calculated automatically, seems it need to be improved for all time gaps. We'll add it to our backlog

JMN79 commented 4 years ago

Hi Guys,

Further to this. Sometimes there are genuine overlaps of resources to a task. Rather than overlapping them (sometimes one completely hides the other task) is there possibly an option to display them above one another. Would dynamically increase the row height of the task so might need to put a configurable max value on how many could be done. Just a suggestion, something our users have mentioned several times. To deal with it we developed a "Clash" filter in PBI which can be used to only show resources that overlap in some way and also had to add the resource details to a tooltip so they can understand which resource its clashing with, in the event they have the same start and end date/times.

Thanks

Jarrod

marnason commented 4 years ago

image In this example, the blue task ends on the same date the purple task begins. The orange line underneath is a 1 day long task which begins on the aforementioned date.

I zoomed in and noticed the specifics of the bug in question. The purple task is visualized to begin earlier than the data would suggest. Also, the visual offset is equal to the radius of the rounded corners.

I believe I have tracked the bug to drawRoundedRectByPath in utils.ts. The function returns a concatenated string which I assume holds all the information necessary to render a single task. Fixing the bug would simply mean adding 1×radius to the x position and retracting 1×radius from the width.

I'm hoping someone will continue my work from here. (I'm also hoping you will make the radius customizable in the near future, since rounded corners really don't match the style in any of my reports)

Selthien commented 3 years ago

In my example I would also like to have the task bars separate out when overlapped. My Data labels are right on top of each other no matter where I put them (Inside,Top,Right) making it hard to read the items that are overlapping. I do have some tasks that when grouped start on the same day.

image