Is it possible to color the days in the default Gantt Diagram?

Question

For the Gantt Diagram of the calendar form (that starts with something like

Project starts the 2020/09/01

), you can color the days with the following statement:

2020/09/13 to 2020/09/16 are colored in lightblue

But it seems impossible to color the days without that initial statement. (I tried "Day1" and "Day 1", but neither worked.)

(It may sounds a bit strange, but I'm currently using Gantt Diagram to demonstrate how variables change in a program process, so the calendar form isn't what I want.)

Comments

Hello. S,

• What is 'Day1' or 'Day 1'?

Regards,
Th.

---

Hello S.,

I'm currently using Gantt Diagram to demonstrate how variables change in a program process, so the calendar form isn't what I want.

Have you an example of your works in progress...
in order to confirm the implementation, and also to put with all the other doc.

Regards,
Th.

Answer 1

Hello S.,

Here is a proposal:

@startgantt
<style>
ganttDiagram {
  timeline {
    'LineColor transparent
    FontColor transparent
  }
}
</style>

hide footbox
project starts the 2021/01/01
2021/01/05 to 2021/01/07 are colored in lightblue

[Var. A] as [A] lasts 9 days
[Var. B] as [B] lasts 5 days
[B] starts at [A]'s end
[A] is colored in Fuchsia/FireBrick
[B] is colored in GreenYellow/Green

2021/01/11 is colored in gold
2021/01/12 is colored in orange
2021/01/13 is colored in red
-- note --
@endgantt

See also doc. here; see 'Clean style', on:

• https://plantuml.com/en/gantt-diagram#f80ba0c004d810f7
• https://forum.plantuml.net/13464

If that can help,
Regards,
Th.

Comments

Is it possible to add M for months? In long projects we count everything in months. So task "requires 5 months" or "task starts M+4" for task starting in the beginning of month 5.

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It would be possible, but only if M always represented exactly 30 days, which is not necessarily accurate.
Would that still be acceptable for you? It could lead to some confusion.

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That would be fine for quick fix and estimated gantt.

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With last snapshot https://github.com/plantuml/plantuml/releases/tag/snapshot

you can have:

https://editor.plantuml.com/uml/SoWkIImgIK_CAodXYdQCLSX9B2ufLZ1II4ciBEQATa88bAUcPWD5d14YkVbv9Hd5N0wfUIaG_G00

Hope this helps!

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Thanks this helps a lot.

It is not perfect. If I can help please contact me.