Re: snap to a line

[Hans Breuer <hans breuer org>]

At 08.02.2011 19:49, dynvec gmail com wrote:
> Hello,
>
> As this is my first message to this list, let me thank you for providing
> a way to give user support.
Welcome to dia-list

> I'm creating a UML diagram and I need to add an Association Class so
Sorry, I don't know an "Association Class", AFAIK there is only support for 
Association between classes.

> I'll need to link the class to the previous association (of 2 other
> classes).I looked at the definitions of the tools on the UML sheet and
> nothing seemed to fit
What's wrong with the seventh button in the UML sheet? At least the tooltip 
"Association, two classed are associated" should give the final hint, even 
if the icon does not.

> so I used a line (on top of the sheet selector),
> although I would've preferred to use a UML tool, so I snap one side to
> the Association Class and the other I try the best to snap to the middle
> colored dot
Are you talking of the orange square or of the cross within the class?

> that I hope would have served as an anchor but it seem
> there's no way to snap it on the association line.
Usually the lines are snapping to the elements.

Please take a look at the manual, e.g. 
http://dia-installer.de/doc/en/objects-chapter.html#connecting-objects

> I'm reminded of my
> failure each time I move one of the 2 previous classes and there's a gap
> between the lines. How would you suggest I proceed?
First of all a common understanding of what association are supposed to be 
would be helpful. (E.g. for me there is no need to associate associations - 
aka. connect lines with other lines - but association are always between 
two classes (or other elements))

> Another point, although less problematic, the best way I found to create
> associations is to use the Aggregation tool then (in its properties)
> choose the type none. Is there a better way to create association?
The Aggregation is just a specialiced Association. I usually start 
Associations from the "Association tool".

HTH,
        Hans

-------- Hans "at" Breuer "dot" Org -----------
Tell me what you need, and I'll tell you how to
get along without it.                -- Dilbert