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Free Software FoundationThe March <a href="https://hostux.social/tags/GNU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNU</a> Spotlight with Amin Bandali is here with eighteen new releases in the last month: <a href="https://u.fsf.org/46i" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://u.fsf.org/46i</a> <a href="https://hostux.social/tags/GNUBoot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUBoot</a> <a href="https://hostux.social/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a> <a href="https://hostux.social/tags/GNUZile" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUZile</a>

uxor :verified:<a href="https://mastodon.xyz/tags/mathematiques" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mathematiques</a> celà fait quelques jours que je me suis mis dans la tête de construire la fractale des cercles d' <a href="https://mastodon.xyz/tags/Apollonius" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Apollonius</a> (idée de TP mêlant récursivité, géométrie, calculs 🤦‍♂️. Bien que les formules de Descartes soient simple, le problème du choix du disque à tracer est finalement assez subtile 😂 je trouve que c'est très mal expliqué dans les sources que j'ai lu, alors qu'il y a un test simple sur les rayons des cercles et leurs centres. Figure tracée avec <a href="https://mastodon.xyz/tags/GNUoctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUoctave</a> <a href="https://en.wikipedia.org/wiki/Descartes%27_theorem" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Descartes%27_theorem</a>

Free Software FoundationThe February <a href="https://hostux.social/tags/GNUSpotlight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUSpotlight</a> by <a href="https://hostux.social/tags/AminBandali" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AminBandali</a> is live and ready to read! Read it here: <a href="https://u.fsf.org/462" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://u.fsf.org/462</a> <a href="https://hostux.social/tags/FSF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FSF</a> <a href="https://hostux.social/tags/GNUBinutils" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUBinutils</a> <a href="https://hostux.social/tags/GNUTypist" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUTypist</a> <a href="https://hostux.social/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a>

uxor :verified:La suite avec la simulation de processus de Poissons et de files d'attentes. prendre le temps de montrer comment on passe d'une définition abstraite (une limite de processus discret) à une simulation numérique permet de rendre les choses plus concretes donc plus accessibles. Ici simulation d'une file d'attente limité à 20 places avec des arrivées et départs de taux=4événements/unité de temps on voit le processus osciller entre saturation et vide.<a href="https://mastodon.xyz/tags/math%C3%A9matiques" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mathématiques</a> <a href="https://mastodon.xyz/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#maths</a> <a href="https://mastodon.xyz/tags/GNUoctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUoctave</a>

uxor :verified:et on continue avec la génération de bruit blanc et la visualisation de sa densité spectrale de puissance ( et le fameux théorème de Wiener Kintchine) toujours avec <a href="https://mastodon.xyz/tags/GNUoctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUoctave</a> <a href="https://mastodon.xyz/tags/mathematiques" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mathematiques</a> <a href="https://mastodon.xyz/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#maths</a>

uxor :verified:toujours dans mes processus stochastiques avec des simulations de mouvement Brownien faites avec <a href="https://mastodon.xyz/tags/GNUoctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUoctave</a> <a href="https://mastodon.xyz/tags/mathematiques" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mathematiques</a> <a href="https://mastodon.xyz/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#maths</a>

Yazılım Teknisyeni<a href="https://mastodon.social/tags/Switch" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Switch</a> to <a href="https://mastodon.social/tags/OpenSource" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OpenSource</a> solutions in <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Linux</a>Photoshop: <a href="https://mastodon.social/tags/Photopea" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photopea</a> Illustrator: <a href="https://mastodon.social/tags/Inkscape" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Inkscape</a> PremierePro: <a href="https://mastodon.social/tags/Kdenlive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Kdenlive</a> <a href="https://mastodon.social/tags/Shotcut" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Shotcut</a> <a href="https://mastodon.social/tags/OBStudio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OBStudio</a> Office: <a href="https://mastodon.social/tags/FreeOffice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeOffice</a> <a href="https://mastodon.social/tags/LibreOffice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LibreOffice</a> Maya: <a href="https://mastodon.social/tags/Blender" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Blender</a> Media: <a href="https://mastodon.social/tags/VLC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#VLC</a> Unity: <a href="https://mastodon.social/tags/Godot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Godot</a> ToonBoom: <a href="https://mastodon.social/tags/SynfigStudio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SynfigStudio</a> <a href="https://mastodon.social/tags/Pencil2D" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pencil2D</a> InDesign: <a href="https://mastodon.social/tags/Scribus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Scribus</a> Nuke: <a href="https://mastodon.social/tags/Natron" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Natron</a> Procreate: <a href="https://mastodon.social/tags/Krita" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Krita</a> After Effects: <a href="https://mastodon.social/tags/Friction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Friction</a> Mathematica: <a href="https://mastodon.social/tags/SageMath" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SageMath</a> <a href="https://mastodon.social/tags/SymPy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SymPy</a> MatLab: <a href="https://mastodon.social/tags/GnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GnuOctave</a> Audition: <a href="https://mastodon.social/tags/Audacity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Audacity</a> Autocad: <a href="https://mastodon.social/tags/FreeCAD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeCAD</a> <a href="https://mastodon.social/tags/QCad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QCad</a> Ableton: <a href="https://mastodon.social/tags/Ardour" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Ardour</a> <a href="https://mastodon.social/tags/LMMS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LMMS</a> (daily build) Lightroom: <a href="https://mastodon.social/tags/DarkTable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DarkTable</a>, <a href="https://mastodon.social/tags/RawTherapee" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RawTherapee</a>And more...

Eugenia L<a href="https://mastodon.social/tags/Switch" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Switch</a> to <a href="https://mastodon.social/tags/opensource" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#opensource</a> solutions:Windows: <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Linux</a> Photoshop: <a href="https://mastodon.social/tags/Gimp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gimp</a> 3.0-rc Illustrator: <a href="https://mastodon.social/tags/Inkscape" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Inkscape</a> PremierePro: <a href="https://mastodon.social/tags/Kdenlive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Kdenlive</a>, <a href="https://mastodon.social/tags/Shotcut" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Shotcut</a> Office/Acrobat: <a href="https://mastodon.social/tags/OnlyOffice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OnlyOffice</a>, <a href="https://mastodon.social/tags/LibreOffice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LibreOffice</a> Maya: <a href="https://mastodon.social/tags/Blender" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Blender</a> Media: <a href="https://mastodon.social/tags/VLC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#VLC</a> Unity: <a href="https://mastodon.social/tags/Godot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Godot</a> ToonBoom: <a href="https://mastodon.social/tags/SynfigStudio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SynfigStudio</a>, <a href="https://mastodon.social/tags/Pencil2D" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pencil2D</a> InDesign: <a href="https://mastodon.social/tags/Scribus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Scribus</a> Nuke: <a href="https://mastodon.social/tags/Natron" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Natron</a> Procreate: <a href="https://mastodon.social/tags/Krita" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Krita</a> After Effects: <a href="https://mastodon.social/tags/Friction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Friction</a> Mathematica: <a href="https://mastodon.social/tags/SageMath" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SageMath</a>, <a href="https://mastodon.social/tags/SymPy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SymPy</a> MatLab: <a href="https://mastodon.social/tags/GnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GnuOctave</a> Audition: <a href="https://mastodon.social/tags/Audacity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Audacity</a> Autocad: <a href="https://mastodon.social/tags/FreeCAD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeCAD</a>, <a href="https://mastodon.social/tags/QCad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QCad</a> Ableton: <a href="https://mastodon.social/tags/Ardour" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Ardour</a>, <a href="https://mastodon.social/tags/LMMS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LMMS</a> (daily build) Lightroom: <a href="https://mastodon.social/tags/DarkTable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DarkTable</a>, <a href="https://mastodon.social/tags/RawTherapee" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RawTherapee</a><a href="https://mastodon.social/tags/foss" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#foss</a>

uxor :verified:<a href="https://mastodon.xyz/tags/matlab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#matlab</a> vs <a href="https://mastodon.xyz/tags/gnuoctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gnuoctave</a> : try computing f=@(x,y) log(2+x)./atan(x-y) c=@(x) -x d=@(x) sin(x) integral2(f,0,2,c,d) then you'll get : 7.453231792656116 % with matlab 7.453230816525963 % with octave a more accurate calculation gives integral2(f,0,2,c,d,'AbsTol',1e-12) 7.453230816525963 % with matlab 7.453230816525963 % with octave so matlab integral2 has not 1e-10 absolute error as said in the manual 🙄 <a href="https://mastodon.xyz/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mathematics</a>

Mathias MagdowskiHier gibt es auch noch das passende <a href="https://bildung.social/tags/OctaveOnline" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OctaveOnline</a>-Bucket mit der Zahlenrechnung und grafischen Darstellung in <a href="https://bildung.social/tags/GnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GnuOctave</a>: <a href="https://octav.onl/Zylinderkondensator_geschichtere_Dielektrika" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://octav.onl/Zylinderkondensator_geschichtere_Dielektrika</a>

Mathias MagdowskiGleiches Problem (Strom durch eine Parallelschaltung aus Widerstand R und Kondensator C bei Anregung mit eienr Dreieckförmigen Quellspannung) in <a href="https://bildung.social/tags/LTspice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LTspice</a> simuliert: <a href="https://youtu.be/HRTpP2jIdEw" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/HRTpP2jIdEw</a>und in <a href="https://bildung.social/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a> berechnet: <a href="https://youtu.be/5CESRD8NZ3U" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/5CESRD8NZ3U</a>

Mathias Magdowski<a href="https://openedtech.social/@moodle" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@moodle</a> Ich habe jetzt auch wieder ein Video mit der Lösungsidee für die letzte Online-Leistungskontrolle "<a href="https://bildung.social/tags/GrundlagenDerElektrotechnik" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GrundlagenDerElektrotechnik</a> II" vom 03.07.2024 aufgezeichnet, in dem ich mit Hilfe von <a href="https://bildung.social/tags/GnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GnuOctave</a> alle 30 Fragen in ca. 35 min korrekt beantworte. <a href="https://youtu.be/5ZT9LgnOibw" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/5ZT9LgnOibw</a>

Mathias MagdowskiZweiter Mitschnitt aus dem Live-Stream: Lösung der Aufgabe 13 zur Abstandsumrechnung eines magnetischen Dipols mit Zahlenrechnung in <a href="https://bildung.social/tags/GnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GnuOctave</a> <a href="https://youtu.be/MCLu9kif52k" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/MCLu9kif52k</a>

Mathias MagdowskiDie gleiche <a href="https://bildung.social/tags/Impedanzmessung" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Impedanzmessung</a> haben wir dann auch noch mit einer Induktivität und dem gesamten Reihenschwingkreis durchgeführt. Der Vergleich mit der vorherigen Rechnung in <a href="https://bildung.social/tags/GnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GnuOctave</a> oder <a href="https://bildung.social/tags/MATLAB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MATLAB</a> sieht sehr gut aus.L: Betrag steigend, 90°-PhasenwinkelRLC: Betrag fallend, Minimum und dann ansteigend, Phasenwechseln von -90° über 0° zu +90°

Mathias MagdowskiLetztes <a href="https://bildung.social/tags/Erkl%C3%A4rvideo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Erklärvideo</a> der Miniserie - gleiche Schaltung, gleiche Fragestellung, aber selbstgemachte zeitdiskrete numerische Simulation in <a href="https://bildung.social/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a>: "Ausgleichsvorgang/Schaltvorgang mit Uq, R, L und 2 Schaltern in <a href="https://bildung.social/tags/Octave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Octave</a> oder <a href="https://bildung.social/tags/MATLAB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MATLAB</a> simulieren" <a href="https://youtu.be/qkk_jyp4hdA" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/qkk_jyp4hdA</a>

(webdev Tory) :emacs:Today I learned about <a href="https://qoto.org/tags/gnuOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gnuOctave</a>, apparently as an OS alternative to <a href="https://qoto.org/tags/MatLab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MatLab</a>. Full disclosure: I've never actually used matlab. Does anyone have experience with Octave? Was it good?<a href="https://wiki.octave.org/Differences_between_Octave_and_Matlab" rel="nofollow noopener noreferrer" target="_blank">https://wiki.octave.org/Differences_between_Octave_and_Matlab</a>

رضا :freeswfa: Reza<a href="https://mas.to/tags/Matlab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Matlab</a> has almost 20GiB volume! Meanwhile <a href="https://mas.to/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a> needs only 0.5 GiB space! <a href="https://mas.to/tags/FOSS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FOSS</a> <a href="https://mas.to/tags/FreeSoftware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeSoftware</a>

Júlio Gardona<a href="https://bolha.us/@guites" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@guites</a> a programação sempre encontra a matemática. A diferença é que a gente usa um problema que já foi resolvido por alguém. 😉 O legal é que existem ferramentas para você prototipar algoritmos como <a href="https://mastodon.social/tags/gnuoctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gnuoctave</a>, alternativa para o matlab, o <a href="https://mastodon.social/tags/scilab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#scilab</a> e até linguagens como <a href="https://mastodon.social/tags/python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#python</a> ou <a href="https://mastodon.social/tags/julialang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#julialang</a>. Mas imho, octave é muito simples de usar<a href="https://octave.org/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://octave.org/</a>

MatthiasRecently I needed an optimization solver to do some image white balance manipulation. As minsearch solver in <a href="https://nerdculture.de/tags/octave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#octave</a> did not work well, I wrote a solver which systematically steps through the 2-dimensional space to find the optimum. Now I expanded the solver to n-dimensions and it is fun to see how fast and reliable it is 😆 <a href="https://nerdculture.de/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a> <a href="https://nerdculture.de/tags/NumericalMethods" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NumericalMethods</a>

Mathias MagdowskiIch habe mich mal wieder selbst dabei gefilmt, wie ich unsere <a href="https://bildung.social/tags/OnlineLeistungskontrolle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OnlineLeistungskontrolle</a> in den <a href="https://bildung.social/tags/GrundlagenDerElektrotechnik" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GrundlagenDerElektrotechnik</a> lösen würde, natürlich unter Nutzung von <a href="https://bildung.social/tags/GNUOctave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GNUOctave</a>: "Lösungsidee für die Online-Leistungskontrolle "Grundlagen der Elektrotechnik I" vom 18.01.2023" <a href="https://youtu.be/GbHNwhP_vT0" rel="nofollow noopener noreferrer" target="_blank">https://youtu.be/GbHNwhP_vT0</a>

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