Gantt aliases work differently from other diagrams (it is not possible to give the same "label" to a task)

Question

Hello PlanUML,

Tests done with version 1.2020.18

Gantt aliases work differently from other diagrams (it is not possible to give the same "label" to a task):

@startgantt
Project starts 2020-11-08
[Task 7 days] as [T7] starts at 2020-11-09
[T7] ends at 2020-11-15
[Task 7 days] as [T7bis] starts at 2020-11-09
[T7bis] ends at 2020-11-15
@endgantt

[See on PlantUML Server]

In Component for example, it is possible to have 2 with the same label:

@startuml
[First component] as Comp1
[Another component] as Comp2
[Another component] as Comp3
Comp1 -> Comp2
@enduml

[See on PlantUML Server]

Thanks for your support  

Comments

Hello S. and PlantUML team,

Here are some another minimal examples:

@startgantt
[SameTaskName] as [T1] lasts 7 days and is colored in pink
[SameTaskName] as [T2] lasts 7 days and is colored in pink
[T1] -> [T2]
@endgantt

And the last one who disappointed us:

@startgantt
[SameTaskName] as [T1] lasts 7 days and is colored in pink
[SameTaskName] as [T2] lasts 3 days and is colored in orange
[T1] -> [T2]
@endgantt

Intermixture: Very hard to detect when you have a large project with stages that have the same name ('test', 'delivery', 'end', ...)

Thanks for your support,
Regards,
Th.

---

Hello.

Any news regarding this issue? It would be very useful to be able to have the same name for different tasks and make each of them unique using the ID or alias.

Currently, we need to make each task name unnecessarily long, by adding spaces or other kind of marks, and it becomes really hard to manage for very large projects. Think about having [Development], [Development ], [Development  ], [Development    ], and so on.

Thanks in advance.

---

Dear PlantUML Team,

This is a blocking point for me. Did you think something can be done?

Thanks for your support,
Regards

SW

---

Hello, PlantUML team.

Would it be possible to use the ID/alias as default unique identifier and only use the task name if no ID/alias has been declared?

Thank you for your support.

---

I'm also getting stuck with this one... I was trying to map out the courses I taught over the years (course has same name, taught many times). I will try the "spaces" hack.

Answer 1

Hi all,

This is now fixed on V1.2024.6:

• https://github.com/plantuml/plantuml/releases/tag/v1.2024.6

@startgantt
Project starts 2020-11-08
[Task 7 days] as [T7] starts at 2020-11-09
[T7] ends at 2020-11-15
[Task 7 days] as [T7bis] starts at 2020-11-09
[T7bis] ends at 2020-11-15
@endgantt

@startgantt
[SameTaskName] as [T1] lasts 7 days and is colored in pink
[SameTaskName] as [T2] lasts 3 days and is colored in orange
[T1] -> [T2]
@endgantt

See similar issue/request here:

• https://github.com/plantuml/plantuml/issues/1809

Thanks PlantUML team and @arnaudroques for the work.

Regards,
Th.

Answer 2

Would it be possible for PlantUML to use the alias as a unique ID, and only use the task name as unique ID if there is no alias?

Comments

I have the same issue in gantt, lets say you have 

Project

1. task 1
   1. demo
2. task 2
   1. demo

demo subtask /milestone should be show for both, but it is not working, just like this there are several examples where same label is needed 

---

Hi everyone,

I suggest a workaround as follows:

1) Define a macro like:     !define N(x,n) x<size:0>n</size>

2) Use for tasks:  N(SAMENAME, INDEX); examples:

N(SAMENAME, 1)

N(SAMENAME, 2)

In the picture only SAMENAME will be shown

---

tried this workaround and is working, it will be nice if they check at the taskid instead of the name

---

This work around does not work for me.

@startgantt

!define N(x,n) x<size:0>n</size>

N(SAMENAME, 1) starts 2020/10/19
N(SAMENAME, 1)
N(SAMENAME, 2)
@endgantt

---

Hello Y., and all,

Here is a (the) worked workaround:

@startgantt

!procedure N(x,n)
[x<size:0>n</size>]
!endprocedure

project starts  2020/10/15
N(SAMENAME, 1) starts 2020/10/19
N(SAMENAME, 2) starts 2020/10/22
N(SAMENAME, 3) starts 2020/10/29
@endgantt

 

Enjoy,
Regards.