November 2014 - Pharo-users

Re: [Pharo-users] Named edges and nodes in a Roassal graph

by Alexandre Bergel

> People in the workshop were interested in Roasal/Pharo but there where some important lessons: Yes, it takes time. Thanks for trying! This is very important! > - There is a lack of information on the basic issues (like this one). Agile Visualization is a good start as the Object Profile gallery, but we need more of that. This test case scenarios are useful in detecting the pending issues. Check the chapter about Roassal on Agile Visualization. https://dl.dropboxusercontent.com/u/31543901/AgileVisualization/Roassal/010… What is missing? I can add a new section, but it will repeat other part... > - Would be nice to have tools for all Roassal visualizations like export as svg. Some demos have them, some other don't, so other casual issues has a bigger learning curve to adopt what they are seeing and use it in another context. Yes, we will work on that. > I would like to post the working example on the meetup page, so if any can tell me why the example is broken or how to solve it, would be nice. How can we help? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Nov. 24, 2014

Re: [Pharo-users] Named edges and nodes in a Roassal graph

by Alexandre Bergel

This is done in the Graph builder. If you are not using it, then do not worry. At the end, it simply use @RTLabelled Alexandre > On Nov 22, 2014, at 6:49 PM, Offray Vladimir Luna CÃ¡rdenas <offray(a)riseup.net> wrote: > > By the way, I have found exampleLabelledGraph but I don't understand where you add individual labels to nodes or edges. > > Thanks, > > Offray > > El 22/11/14 a las #4, Offray Vladimir Luna CÃ¡rdenas escribiÃ³: >> Hi all. >> >> We're now in a small workshop about data narratives and I'm showing some >> people Roassal. >> >> I would like to have named nodes and edges in a graph. I have created a >> small understable graph from the object profile gallery here: >> http://ws.stfx.eu/8QMELFJ4V370 >> >> Anyone knows how to add names to edges and nodes in this graph? >> >> If I could have a quick answer on this one would be awesome. By the way >> I'm now 5:50 pm (GMT-5) in the pharo irc channel is someone pops up. >> >> Thanks, >> >> Offray >> >> > > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Nov. 24, 2014

Re: [Pharo-users] Named edges and nodes in a Roassal graph

by Alexandre Bergel

Yeah, this example had been broken for quite some time. This is now fixed! Cheers, Alexandre > On Nov 22, 2014, at 6:49 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > Check out RTRoassalExample>>exampleArrowedAndLabelledLine , it should demonstrate the functionality for both elements and edges. You can also use TRConstraint, but that is a tad bit more advanced. > > Peter -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Nov. 24, 2014

Re: [Pharo-users] Named edges and nodes in a Roassal graph

by Alexandre Bergel

Hi Offray, The chapter about Roassal contains several examples on how to name nodes: https://dl.dropboxusercontent.com/u/31543901/AgileVisualization/Roassal/010… To label the nodes, the simplest way is to use @ RTLabelled. (However, you need first to add the element in the view before doing @ RTLabelled). This works pretty well. Here is your code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= "Definimo los elementos, que denominamos simplemente e1, e2, etc, con su color y su tamaÃ±o" e1 := (RTEllipse new color: (Color blue alpha: 0.4); size: 20) elementOn: 'hello'. e2 := (RTEllipse new color: (Color red alpha: 0.4); size: 20) elementOn: 'Bonjour'. e3 := (RTEllipse new color: (Color yellow alpha: 0.4); size: 20) elementOn: 'Gutten Tag'. e4 := (RTEllipse new color: (Color green alpha: 0.4); size: 20) elementOn: 'BuenGiorno'. "Adicionamos los elementos a la vista" vista add: e1; add: e2; add: e3; add: e4. "Decimos que los elementos antes definidos se podrÃ¡n arrastrar" e1 @ RTDraggable @ RTLabelled. e2 @ RTDraggable @ RTLabelled. e3 @ RTDraggable @ RTLabelled. e4 @ RTDraggable @ RTLabelled. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= You have something like that: For the edges, you can simply use @RTLabelled on an edge. Consider: -=-=-=-=-=-=-=-=-=-=-=-= line1 := line edgeFrom: e1 to: e2. line2 := line edgeFrom: e2 to: e1. line3 := line edgeFrom: e1 to: e2. line4 := line edgeFrom: e2 to: e2. line5 := line edgeFrom: e3 to: e4. vista add: line1. vista add: line2. vista add: line3. vista add: line4. vista add: line5. line1 @ RTLabelled. line2 @ RTLabelled. line3 @ RTLabelled. line4 @ RTLabelled. line5 @ RTLabelled. -=-=-=-=-=-=-=-=-=-=-=-= You can particularize the edge label with something like: line1 @ (RTLabelled new text: 'my edge'). Cheers, Alexandre > On Nov 22, 2014, at 6:33 PM, Offray Vladimir Luna CÃ¡rdenas <offray(a)riseup.net> wrote: > > Hi all. > > We're now in a small workshop about data narratives and I'm showing some people Roassal. > > I would like to have named nodes and edges in a graph. I have created a small understable graph from the object profile gallery here: http://ws.stfx.eu/8QMELFJ4V370 > > Anyone knows how to add names to edges and nodes in this graph? > > If I could have a quick answer on this one would be awesome. By the way I'm now 5:50 pm (GMT-5) in the pharo irc channel is someone pops up. > > Thanks, > > Offray > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Nov. 23, 2014

Re: [Pharo-users] Named edges and nodes in a Roassal graph

by Peter UhnÃ¡k

I think I know what you mean... but wasn't that just a demonstration of Roassal-based menu? Also there is always PNG export available (at least in the Moose image, in Pharo the whole browser is not working properly but I think someone is fixing that) . On Sun, Nov 23, 2014 at 7:31 PM, Offray Vladimir Luna CÃ¡rdenas < offray(a)riseup.net> wrote: > Hi, > > El 22/11/14 a las #4, Peter UhnÃ¡k escribiÃ³: > >> Would be nice to have tools for all Roassal visualizations like >> export as >> >> svg. Some demos have them, some other don't, so other casual >> **users** has a >> bigger learning curve to adopt what they are seeing and use it in >> another >> context. >> >> Roassal supports PNG, SVG and HTML export. What do you mean some demos >> have them >> and some don't? >> >> > I remember to see a demo with a button which make explicit the > exportation. It was something as "Export SVG" or something like that. > Exporting a visualization is such a common task that it should be part of > each visualization window, may be as an option in the border menu (the one > that emerges when clicking on the pointing down triangle). > > Cheers, > > Offray > >

Nov. 23, 2014

Re: [Pharo-users] Named edges and nodes in a Roassal graph

by Offray Vladimir Luna CÃ¡rdenas

Hi, El 22/11/14 a las #4, Peter UhnÃ¡k escribiÃ³: > Would be nice to have tools for all Roassal visualizations like export as > svg. Some demos have them, some other don't, so other casual **users** has a > bigger learning curve to adopt what they are seeing and use it in another > context. > > Roassal supports PNG, SVG and HTML export. What do you mean some demos have them > and some don't? > I remember to see a demo with a button which make explicit the exportation. It was something as "Export SVG" or something like that. Exporting a visualization is such a common task that it should be part of each visualization window, may be as an option in the border menu (the one that emerges when clicking on the pointing down triangle). Cheers, Offray

Nov. 23, 2014

Re: [Pharo-users] layout and other potential class-side variables

by Peter UhnÃ¡k

Aha I wasn't aware of that, thank you. Peter

Nov. 23, 2014

Re: [Pharo-users] layout and other potential class-side variables

by Nicolai Hess

2014-11-23 15:15 GMT+01:00 Peter UhnÃ¡k <i.uhnak(a)gmail.com>: > So I accidentally assigned some content to 'layout' variable in class side > and realized much later that it has overridden some Slot's FixedLayout. > > Looking up the inheritance chain (Object & ProtoObject) I couldn't find > anything so I don't know where is this coming from or how it is added there. > > But most importantly: are there more variable names that I should be aware > of that could get accidentally overridden? > > Thanks, > Peter > Yes, that is a problem, and there is already an issue at fogbugz: 11783 <https://pharo.fogbugz.com/default.asp?11783> #layout should be renamed to e.g. #slotLayout (actually, it is renamed to classLayout) and there are other messages like #users for trait users 13274 <https://pharo.fogbugz.com/default.asp?13274> Replace users by traitUsers

Nov. 23, 2014

layout and other potential class-side variables

by Peter UhnÃ¡k

So I accidentally assigned some content to 'layout' variable in class side and realized much later that it has overridden some Slot's FixedLayout. Looking up the inheritance chain (Object & ProtoObject) I couldn't find anything so I don't know where is this coming from or how it is added there. But most importantly: are there more variable names that I should be aware of that could get accidentally overridden? Thanks, Peter

Nov. 23, 2014

Re: [Pharo-users] Messaging solutions for Pharo

by stepharo

Hello Andres nice to see you on this list :) Stef Le 19/11/14 19:40, Andres Fortier a Ã©crit : > Hi Esteban, > Never used either of them, but IIRC there was a Jabber package in > Visualworks (JabberXMPP?), although not sure if it provided both > client and server. There is also > http://www.squeaksource.com/@zQrCJXpxIQLxqde8/tV369AO0. Seems dated, > but maybe worth a shot considering you only need the server side? > > HTH, > AndrÃ©s > > On Wed, Nov 19, 2014 at 3:06 PM, Esteban A. Maringolo > <emaringolo(a)gmail.com <mailto:emaringolo@gmail.com>> wrote: > > Hi, > > I'll be needing to add bidirectional messaging to our current > Android (Java) application, and as usual I'm expecting to manage > the server side of the communication with Pharo. > > I'm evaluating two alternatives, but I'm in open to other, proven, > options. > > Option 1. WebSockets > Open a WebSocket on each device, and push/retrieve messages from > each of these, tracking the device id if I need to recreate a new > socket (avoiding recreating new sockets in case of connectivity > issues, very common). > > Option 2. MQTT [1] > This is basically a mobile oriented MQ, super low footprint on > mobile. > For what I saw, I could implement the server using an intermediate > MQ (RabbitMQ) and use STOMP to connect to it. > > Option 3. XMPP [3] > Provides several features I'll need in the future, like file > transfer in addition to regular text messaging. It is very well > supported in Android with Smack [4], but I don't know if we have a > Pharo server for it, or if somebody ever played with it. > > By means of simplicity and use load I favor option 1, because I > can understand it better, and as everything moves towards web > based technologies, I could implement WAMP [5] on top of that in > the future. > > Right now I'd need to have a hundred websockets opened at the same > time, which doesn't sound like a heavy load to me, but I certainly > don't know. In the future it could be an order of magnitude > bigger, and that's why I don't discard more complex solutions like > XMPP or MQTT. > > Regards! > > > [1] http://mqtt.org/ > [2] https://github.com/svenvc/docs/blob/master/neo/stamp.md > [3] http://xmpp.org/ > [4] http://www.igniterealtime.org/projects/smack/ > [5] http://wamp.ws/ > > >

Nov. 23, 2014