March 2015 - Pharo-users - lists.pharo.org

The Grapher charting engine
by Alexandre Bergel March 25, 2015

March 25, 2015

Dear all, As many of you know, Grapher is a Ã¼ber-cool charting engine, part of Roassal. For people who do not know what Grapher is, here is a (compelling we hope) example: Which is obtained by the following script: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= | b colors points ds pts dec lb | b := RTGrapher new. colors := Array with: Color red with: Color blue. points := OrderedCollection new. colors do: [ :c | ds := RTStackedDataSet new. pts := ((1 to: 100) collect: [ :i | 50 atRandom - 25 ]) cumsum. points add: pts. ds points: pts. dec := RTDevVarDecorator new. dec moveBehind; desviation: 0.5; color: (c alpha: 0.3); points: pts. ds connectUsing: (RTLine new color: (c alpha: 0.5); width: 1 ). b add: ds. b addDecorator: dec. ]. b axisX; axisY. b build. lb := RTLegendBuilder new. lb view: b view. colors doWithIndex: [ :c :i | lb addColor: c text: 'Series ', i printString ]. lb build. b view @ RTZoomableView. b view -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= In our grand vision of making Roassal the best visualizing engine of the Universe (we also know to be modest time to time, but not today :-), Grapher will play a very important role. We would like to stabilize Grapher and make it sure it happily fits everybody needs. You can help on it: - When you are tempted to look at the dark side of the planet (this is where R, JFreeChart, gnuplot, D3 and all their friends live), let us know. We will make sure to make you are happy again. - Share your wishlist with us. We already have a long todo list, but your opinion does matter and will take it seriously - we are open to contributions, which could be financial, bug fixe, enhancement, or simply encouragement. I am very happy to be surrounded by very smart engineers. Your encouragement are making them happy :-) Cheers, Alexandre, in the name of the Object Profile Team NB: sorry for the cross-list posting, but this email is very important for us, and for you we hope. -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Re: [Pharo-users] GRNumberPrinter
by Sven Van Caekenberghe March 25, 2015

March 25, 2015

According to GRPrinterTest>>#testIntegerPrinter this is expected behaviour ;-) There is also a GRSignPrinter, but since there are no class comments ... > On 25 Mar 2015, at 20:14, Cameron Sanders via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > Date: 25 Mar 2015 20:13:59 CET > Subject: GRNumberPrinter > From: Cameron Sanders <camsanders(a)aol.com> > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > > > What am i doing wrong here with my usage? > > (GRNumberPrinter new separator: $,; precision: 2; yourself) > print: -300. > > when inspected i get '300.00'. > > Thanks in advance. > > -Cam > >

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GRNumberPrinter
by Cameron Sanders March 25, 2015

March 25, 2015

What am i doing wrong here with my usage? (GRNumberPrinter new separator: $,; precision: 2; yourself) print: -300. when inspected i get '300.00'. Thanks in advance. -Cam

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USB in Pharo?
by Udo Schneider March 25, 2015

March 25, 2015

All, does anybody have some code or plugin to access USB ports with Pharo? Maybe something using libUSB or OpenUSB? Thanks, Udo

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Collection with memory?
by stepharo March 25, 2015

March 25, 2015

Hi I need a collection that does the following: col := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') asMyNewCollection. col findFirst: [:each | each first = $a] > a12 col findFirst: [:each | each first = $a] > a13 Do you know a collection that would work? So I have the impression that such behavoir could be defined with a kind of methods wrapper. Stef

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Using Google service discovery API's with Pharo Smalltalk by Richard J. Prinz
by Sven Van Caekenberghe March 25, 2015

March 25, 2015

I hadn't seen this posted on the mailing list, but this is really cool stuff. Using Google service discovery API's with Pharo Smalltalk by Richard J. Prinz > http://www.min.at/prinz/?x=entry:entry150318-104537 <http://www.min.at/prinz/?x=entry:entry150318-104537;comments:1#comments> Nice work, Richard ! Sven

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Monitoring spotter
by Alexandre Bergel March 25, 2015

March 25, 2015

Hi! The GT crew recently introduces in Pharo a way to keep track of what people are searching in the system. This is a highly valuable piece of information that could benefit everybody. For example, I would love to know which Roassal classes are looking the most often. Or which Roassal examples people are repeatedly searching. However, this is hard to know currently. The reason is because of anonymity. No strings are stored in what is being sent over. To me, this is _highly counter-productive_: if you are working with sensitive information (I donât personally), then do not send things over. But enforcing anonymity generate frustration. So, here is my call: If you care about letting us improving the tools everybody use, feel free to reveal your identity. Simply send the result of the following expression: GTSpotterEventRecorderSettings uniqueInstance secretUUID hash For me => 195966943 Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Git overriding repo load from different source
by Peter UhnÃ¡k March 25, 2015

March 25, 2015

Hi, I'm trying to load local package over git one... basically: Projects A and B. A depends on B. A loads B from its BaselineOfA, the reference points to github. Now I have also local copy of B git repository, and I would like to either a) Override the load of B with local B (so the packages will point to local instead of remote). Currently it fails on MetacelloRepositorySpec>>hasNoLoadConflicts: because each (local and git) repo points to different place. This would be useful if I want to make change to B AFTER the project B is already loaded. b) Add all packages from B to local B repo (same as manually using "add to package..." in Monticello Browser") This will work only if both the repos have the same packages, so probably not that useful. (i.e. no code differences) c) Override the GitHub B repository in the BaselineOfA BEFORE the project is loaded. This would require some mapping in Monticello browser, I've seen something like "repositoryOverrides:" but I don't know how it works. This would be useful if I knew beforehand that I want to make changes also to B. So how would one go about this? Having option "c)" would be probably the best; I can live without "a)". :) Any pointers appreciated, Peter

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Code formatting - preserving newlines and comments
by Peter UhnÃ¡k March 25, 2015

March 25, 2015

Is it possible to configure formatter to preserve empty lines and line comments? e.g. -------------- myMethod someCode. < empty line that I would like to preserve > moreCode. --------------- the formatter also automatically puts comments on the end of the previous statement. e.g. ------ someCode. "a comment" moreCode. ---- ends up as ---- someCode. "a comment" moreCode. ----- Both those behaviors seems odd to me. I've seen empty newlines and line comments in Pharo code... so either I missed some setting or people just don't use the formatter? Thanks, Peter

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Re: [Pharo-users] Settings browser
by Hilaire March 25, 2015

March 25, 2015

Le 24/03/2015 21:22, Alain Plantec via Pharo-users a Ã©crit : > Have a look at the setting chapter (The Setting Framework) Hi Alain, Thanks Alain. I was already studying the chapter yesterday, but it appears there is an unexpected complication, In a singleton DrGeoStylePreference class I define the methods as follow: drgeoStylesOn: aBuilder <drgeosettings> (aBuilder group: #drgeoStyle) label: 'Style'; with: [ (aBuilder group: #point) label: 'Point' translated; with: [ (aBuilder setting: #pointColor) label: 'Colour' translated]. ../.. then pointColor ^ current "respond the singleton, widget build up set later" settingInputWidgetForNode: aSettingDeclaration ^ (aSettingDeclaration name, 'Widget') asSymbol value: self. pointColorWidget ^ (UITheme builder newMorphDropListFor: self list: #colorMorphCollection getSelected: #pointColorIndex setSelected: #pointColorIndex: help: 'Set the colour.' translated) minWidth: DrGIcons menuExtent x + 35 ../.. and so on. The complication comes from the SettingDeclaration>>inputWidget where the widget model is set to the SettingDeclaration, and it breaks: inputWidget "return the default widget for the input a the setting" ../.. inputWidget ifNotNil: [(inputWidget respondsTo: #model:) ifTrue: [inputWidget model: self]]. ../.. If I remove the #model: call, it is ok. Did I miss something? Thanks Hilaire -- Dr. Geo - http://drgeo.eu iStoa - http://istoa.drgeo.eu

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