March 2016 - Pharo-users - lists.pharo.org

Lost class migrating from 3.0 to 4.0

by Hilaire

I am migrating a web application from 3.0 to 4.0. I noted one class can't get load! It is however present in the Squeaksource repo. The class is a WAComponent, it is the entry point of the application with all the initializations. All the libraries dependencies are satisfied. I don't see reason why the class can't be load, and there is no such warning. Trying to load by hand this sole class does not work either. Did any of you meet such problem with Pharo 4.0 Hilaire -- Dr. Geo http://drgeo.eu

March 3, 2016

Re: [Pharo-users] Call about Numerical Methods in Pharo :)

by stepharo

>> Then we started to enhance the distributions to make sure that we >> can plug other distribution for having >> controlled random number. > Ok, did you commit the code ? No I lost my internet connection at home ;( Ask the company to check. > >> - Do a public call to know what is missing for you: this is this mail :) >> Didier would like to work on concrete cases. I love that attitude >> So tell us :) >> >> Hernan ?? >> Alex: ?? pvalue? better distribution? >> Vincent: covariance? CPA? >> Philippe: times series >> Serge R frames? >> Sami: Better random number and various distributions? >> >> - Organise a two day lectures with practices on concrete case in >> September with a recording session. >> Either at IRD Bondy or Lille. >> >> - Make sure that the Numerical Method book will get on lulu :) with a >> better cover and title :) > Thank you Stef for pushing ! > Can we move this discussion of the SciSmalltalk mailing-list ?

March 3, 2016

Little how to

by stepharo

Hi guys for the mooc I would like have a list of how to that students should look in the system and implement. The idea is to show to the participants that Pharo is open and that they can find information. For example, - extracting a sprite from a png file - access a time service of the web Now I would love to get your ideas and their solution. Stef

March 3, 2016

Re: [Pharo-users] [Pharo-dev] Call about Numerical Methods in Pharo :)

by Serge Stinckwich

On Thu, Mar 3, 2016 at 6:25 AM, HernÃ¡n Morales Durand <hernan.morales(a)gmail.com> wrote: > Hi Stef, > > For bioinformatics research it would be **really** nice to have: > > - Tree creation algorithms: UPGMA, WPGMA. > - MCMC methods: Metropolis-adjusted Langevin algorithm (MALA and SMMALA), > Metropolis-coupled MCMC (MC3) would enable Bayesian inferences and to work > with evolution of genes. I cannot tell how important is to have such > algorithms implemented in Smalltalk. > - Mahalanobis distance for analyzing bacterial plasmids. > - Random Forest is used a lot for gene expression, protein-protein > interaction predictions, genome-wide association studies, etc . For the > argument "let's use FFI for it" please remember many of these methods are > extended, like enriched random forest, for research with specialized data. Can you add enhancement issues in the SciSmalltalk issue tracker : https://github.com/SergeStinckwich/SciSmalltalk/issues in order to keep them in mind ? We are trying to create a pure Smalltalk library, so we try to avoid FFI as much as possible :-) > There are implementations of naive Bayes classifier in NaturalSmalltalk > (which could be adapted to SciPharo) > http://smalltalkhub.com/#!/~hernan/NaturalSmalltalk Great, if we can move them to SciSmalltalk. > As a side note I found an interesting history report of SciPy. > From the slide 9 onwards: > > http://sssslide.com/www.slideshare.net/shoheihido/sci-pyhistory > > Presentation shows SciPy history (credited contributors with pictures, very > nice!). > As you can se they even have a Foundation NumFOCUS for raising money. For sure, money always help ;-) The only problem at the moment is that the Pharo community is much smaller at the moment than the Python one. Thank you for your help. -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

March 3, 2016

Re: [Pharo-users] [Pharo-dev] Call about Numerical Methods in Pharo :)

by Serge Stinckwich

On Wed, Mar 2, 2016 at 11:39 PM, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > Hi ! > >> - Do a public call to know what is missing for you: this is this mail :) >> Didier would like to work on concrete cases. I love that attitude >> So tell us :) > > This is an excellent initiative! > I personally need the following: > - Shapiro-Wilk test to check for data normality > - Kruskal-Wallis to analyze differences in median values between samples > - Bonferroni-Dunn to support multiple comparison and controlling the group error rate > - Mann-Whitney U test is a nonparametric statistical test that operates over two samples of the same size. Great list ! At the moment, there is only Kolmogorov-Smirnov test implemented. Can you create issues in the SciSmalltalk issue tracker in order to keep track of your needs ? The issue tracker is here: https://github.com/SergeStinckwich/SciSmalltalk/issues You can also join the SciSmalltalk mailing-list: https://groups.google.com/forum/#!forum/scismalltalk Thank you Alex. -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

March 3, 2016

Re: [Pharo-users] Call about Numerical Methods in Pharo :)

by HernÃ¡n Morales Durand

Hi Stef, For bioinformatics research it would be **really** nice to have: - Tree creation algorithms: UPGMA, WPGMA. - MCMC methods: Metropolis-adjusted Langevin algorithm (MALA and SMMALA), Metropolis-coupled MCMC (MC3) would enable Bayesian inferences and to work with evolution of genes. I cannot tell how important is to have such algorithms implemented in Smalltalk. - Mahalanobis distance for analyzing bacterial plasmids. - Random Forest is used a lot for gene expression, protein-protein interaction predictions, genome-wide association studies, etc . For the argument "let's use FFI for it" please remember many of these methods are extended, like enriched random forest, for research with specialized data. There are implementations of naive Bayes classifier in NaturalSmalltalk (which could be adapted to SciPharo) http://smalltalkhub.com/#!/~hernan/NaturalSmalltalk As a side note I found an interesting history report of SciPy. >From the slide 9 onwards: http://sssslide.com/www.slideshare.net/shoheihido/sci-pyhistory Presentation shows SciPy history (credited contributors with pictures, very nice!). As you can se they even have a Foundation NumFOCUS for raising money. HernÃ¡n 2016-03-02 10:17 GMT-03:00 stepharo <stepharo(a)free.fr>: > Hi guys > > I met Didier Besset and we had a great hacking session and discussions > with Serge Stinckwich. > Didier would like to help Pharo and the numerical part of it. ***Big > thanks*** Didier. > > We would like to do several things: > > - Work on "Hows to" > The numerical methods in Pharo is good but the gap between us and > the math is too large :) > so the idea is to have a series of "how to ..." > - histomgram (simple, based on distribution) > > - Improve the SciPharo/NumPha (previously SciSmalltalk) library > This morning we started to implement a ComponentPrincipalDecomposition > by combining two of the > objects available in SciPharo. > Then we started to enhance the distributions to make sure that we > can plug other distribution for having > controlled random number. > > - Do a public call to know what is missing for you: this is this mail > :) > Didier would like to work on concrete cases. I love that attitude > So tell us :) > > Hernan ?? > Alex: ?? pvalue? better distribution? > Vincent: covariance? CPA? > Philippe: times series > Serge R frames? > Sami: Better random number and various distributions? > > - Organise a two day lectures with practices on concrete case in > September with a recording session. > Either at IRD Bondy or Lille. > > - Make sure that the Numerical Method book will get on lulu :) with a > better cover and title :) > > > Stef > > >

March 3, 2016

Re: [Pharo-users] Is there a way to display Spec widgets in a ListModel?

by Johan Fabry

For me, a list should just hold âdumbâ items where the kinds of actions you can do are limited to e.g. a simple context menu. Otherwise if you need complex actions or multiple nested widgets et cetera, the ListModel implementation and API will become too complicated. I instead think that what you want is something that should be taken care of by dynamic spec: (1) you make a ComposableModel subclass that holds all the widgets for one item of your list, (2) you make your own âlist widgetâ that uses dynamic spec to dynamically add/remove instances of (1) in a one column layout. Note that I have never tried this. As far as I understand, this should mostly work. When there will be a need for a vertical scrollbar I donât think it will appear. If this is the case, dynamic spec should be extended with this support. I think that in general, dynamic spec and layouting of widgets could benefit of some work. But this is a complex topic and I do not have the time to tackle it, sadly. > On Mar 2, 2016, at 17:44, Julien Delplanque <julien(a)tamere.eu> wrote: > > This: [1] is what I would like to do. > I found it in an old thread: [2] but it is a prototype. I wondered if there was an object able to do it in the framework :-)... > > Julien > > Links: > [1]: http://ijintek.fr/wiki/doku.php?id=spec_examples#listview_example > [2]: http://forum.world.st/Spec-question-td4741608.html#a4747231 > > On 02/03/16 21:31, Johan Fabry wrote: >> I never tried anything like this, I do not think it is possible. >> >> What you are trying to do seems strange to me, what is the use case you want to implement? >> >>> On Mar 2, 2016, at 17:06, Julien Delplanque <julien(a)tamere.eu> wrote: >>> >>> Hi everyone, >>> >>> I can't find how to display Spec widgets in a ListModel, is it possible? >>> >>> I would like to have a list model holding, at each row, a TextModel and a ButtonModel. >>> >>> Thanks in advance, >>> >>> Julien >>> >>> >> >> >> ---> Save our in-boxes! http://emailcharter.org <--- >> >> Johan Fabry - http://pleiad.cl/~jfabry >> PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile >> >> > > > ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile

March 3, 2016

Re: [Pharo-users] Celebrating the upcoming Open Data Day (March 5) with Pharo

by Alexandre Bergel

This is fantastic! Let us know how we can help you! Alexandre > On Mar 2, 2016, at 6:45 PM, Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> wrote: > > Hi all, > > I just want to share a post made on the Open Knowledge Foundation Forum talking about what we're doing in our local community to celebrate the Open Data Day: > > https://discuss.okfn.org/t/our-poryect-and-hackathon-workshop-for-the-open-… > > Pharo, Roassal and Moose will be an integral part of our celebration. As I said in the link, we're going to try some treemapping techniques. I know about Quick Silver, but if any has some other advice, is very welcomed. > > Probably I will be making some questions here and in the chat channel regarding treemapping and some SQLite queries to get the proper info, so I'll keep you posted on how our pharo powered workshop/hackathon for the celebration of the Open Data Day advances. > > Cheers, > > Offray > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

March 2, 2016

Re: [Pharo-users] Call about Numerical Methods in Pharo :)

by Alexandre Bergel

Hi ! > - Do a public call to know what is missing for you: this is this mail :) > Didier would like to work on concrete cases. I love that attitude > So tell us :) This is an excellent initiative! I personally need the following: - Shapiro-Wilk test to check for data normality - Kruskal-Wallis to analyze differences in median values between samples - Bonferroni-Dunn to support multiple comparison and controlling the group error rate - Mann-Whitney U test is a nonparametric statistical test that operates over two samples of the same size. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

March 2, 2016

Re: [Pharo-users] Is there a way to display Spec widgets in a ListModel?

by HernÃ¡n Morales Durand

Hi Julien Have a look at https://youtu.be/fRhcNkPKXWY?t=28 That's a list creating composed Spec widgets dynamically. Is that what you mean? HernÃ¡n 2016-03-02 17:06 GMT-03:00 Julien Delplanque <julien(a)tamere.eu>: > Hi everyone, > > I can't find how to display Spec widgets in a ListModel, is it possible? > > I would like to have a list model holding, at each row, a TextModel and a > ButtonModel. > > Thanks in advance, > > Julien > >

March 2, 2016