Hi Johann

Thanks for your interest in my work and for your questions.

I don't have any specific problems with using the old version of python within 
Dia, it more that I have to maintain an install of the old python version with 
newer versions required for other things. This works OK right now, but as with 
everything you have to update at some point otherwise things stop working 

Here is a short video of the R5 robot working with Plan4.inst created directly 
from the python export - https://youtu.be/7Pur3ADVPO4 

I have created plans with maybe 150 elements and it works fine. I think it 
would usefully scale up to several hundred plan elements, although you would 
need some structure in your layout of the diagram to keep it maintainable. The 
plans are not hierarchies, but directed graphs i.e. a sub tree can be used in 
multiple places. I do not currently support any kind of diagram nesting. This 
visual approach works well for the creation of reactive plans, and we are using 
it with other tools, see ABOD3 on GitHub https://github.com/RecklessCoding/ABOD3

In terms of limitations I can't think of anything specific. It was a little 
difficult to work out how to debug the python script from within the Dia 

I did look at doing this in MS-Visio, and even discounting the huge cost of 
Visio (I can get a free Uni licence), I honestly think it was much easier in 
Dia with Python than it would have been using VBScript in Visio.

One very handy facility would be the ability to group a set of elements and 
then collapse/expand them into a single visible element, whilst maintaining the 
underlying object data structures.

I like Dia very much.



-----Original Message-----
From: Johann Tienhaara [mailto:jtienha...@yahoo.com] 
Sent: 15 September 2016 02:49
To: Rob Wortham <r.h.wort...@gmail.com>; 'discussions about usage and 
development of dia' <dia-list@gnome.org>
Subject: Dia and reactive planning (was: Dia Discontinued)

Hi Rob,

I'm curious, what sorts of features in newer versions of Python would be 
helpful to your project?

I'm halfway through your introductory paper on Instinct
and would highly recommend it to anyone who, like me, knows nothing about robot 
AI or "reactive planning".  It might very well be great for those well versed 
in the field, too.  But the fact that it is well written and low on acronyms 
makes it very approachable for outsiders like me.

Your use of Dia is interesting.  Do you have any videos of robots controlled by 
plans like the sample on your website?


How well is the visual planning approach working for you?  Are you at all 
constrained by lack of hierarchy in a single Dia UML diagram?  Or are the plans 
generally small?  Or have you constructed a way to nest diagrams?  Or is it too 
soon to tell whether the visual approach will suffice for complex plans?

What kinds of limitations in Dia and/or Python did you hit?  Coding

limitations (like getting the UML - to - plan code working)?  Or UI /

usability issues?  Etc?

I can't speak for anyone else on the list, of course, but I'd certainly be 
interested in hearing more about your project in general, and experiences with 
Dia in particular.



From: Rob Wortham <r.h.wort...@gmail.com>
To: 'Johann Tienhaara' <jtienha...@yahoo.com>; 'discussions about usage and 
development of dia' <dia-list@gnome.org>
Sent: Wednesday, September 14, 2016 2:10 PM
Subject: RE: Dia Discontinued

Hi Johann
My python work is here
Details also here http://www.robwortham.com/instinct-planner/

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