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{{Note|GNU Octave | {{Note|GNU Octave is a [https://summerofcode.withgoogle.com/programs/2023/organizations/gnu-octave mentoring organization for GSoC 2023].}} | ||
Since 2011 the GNU Octave project has successfully mentored: | Since 2011 the GNU Octave project has successfully mentored: | ||
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# 😉💬 '''We want to get to know you (before the deadline). Communicate with us.''' | # 😉💬 '''We want to get to know you (before the deadline). Communicate with us.''' | ||
#* Join [https://octave.discourse.group/ '''Octave Discourse'''] or [[IRC]]. Using a nickname is fine. | #* Join [https://octave.discourse.group/ '''Octave Discourse'''] or [[IRC]] for general discussion and to ask questions (Please do not use the bug tracker for general GSOC inquiries unrelated to specific bugs found with Octave.) Using a nickname is fine. | ||
#* Show us that you're motivated to work on Octave 💻. There is no need to present an overwhelming CV 🏆; evidence of involvement with Octave is more important. | #* Show us that you're motivated to work on Octave 💻. There is no need to present an overwhelming CV 🏆; evidence of involvement with Octave is more important. | ||
#* '''<span style="color:darkblue;">If you never talked to us, we will likely reject your proposal</span>''', even it looks good 🚮 | #* '''<span style="color:darkblue;">If you never talked to us, we will likely reject your proposal</span>''', even it looks good 🚮 | ||
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The following suggested projects are distilled from the [[Projects]] page for the benefit of potential SoC participants. You can also look at our [[Summer of Code|completed past projects]] for more inspiration. | The following suggested projects are distilled from the [[Projects]] page for the benefit of potential SoC participants. You can also look at our [[Summer of Code|completed past projects]] for more inspiration. | ||
{{Note|Do you use Octave at your working place or university? Do you have some numerical project in mind? You are always welcome to '''propose your own projects'''. If you are passionate about your project, it will be easy to find an Octave developer to mentor and guide you.}} | {{Note|Do you use Octave at your working place or university? Do you have some numerical project in mind? You are always welcome to '''propose your own projects'''. If you are passionate about your project, it will be easy to find an Octave developer to mentor and guide you. Please note that for such a proposal to be successful it will almost certainly involve initiating pre-proposal discussion over at the [https://octave.discourse.group Octave Discourse forum].}} | ||
== | == Adding regression GAM and kNN classification functionality in statistics package == | ||
Generalized Additive Models and k-Nearest Neighbor algorithms are two important tools in advanced statistics used for regression and classification problems, respectively. The statistics package, although heavily developed during the past year, still lacks any functionality regarding these two algorithms. | |||
The scope is to implement both the respective class def objects as well as the relevant functions in a MATLAB compatible way. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~ | : ~350 hours (medium) | ||
* '''Required skills''' | * '''Required skills''' | ||
: Octave, | : Octave, familiarity with statistical methods | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: [https://octave.discourse.group/u/ | : [https://octave.discourse.group/u/pr0m1th3as Andreas Bertsatos] | ||
== | == Custom re-implementation of the texi2html (v.1.82) command line tool == | ||
Implement a custom perl script to relax the dependency of the pkg-octave-doc package on texi2html (v.1.82) command line tool, which is no longer maintained or further developed but also not readily available to all linux distributions. | |||
This will also help improve the speed of pkg-octave-doc processing large packages, which contain specific tags (such as @math) which are currently handled within Octave code. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~350 hours ( | : ~350 hours (hard) | ||
* '''Required skills''' | * '''Required skills''' | ||
: Octave, | : Perl, Octave, Texinfo, HTML | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: | : [https://octave.discourse.group/u/pr0m1th3as Andreas Bertsatos] | ||
== | == A function search index website for all Octave Packages == | ||
Develop additional functionality for the pkg-octave-doc package than will search all pkg compatible packages listed in Octave Packages, enumerate the available functions from each package, and built a website with search capability that will list all functions’ names and their respective package(s). The function list should have links corresponding to their documentation or/and source code. This could be integrated in the current Octave Packages website and the implemented tool can be part of the current CI (used for testing a package before merging a new release) and automatically update the website with every package release. Alternatively, it can be a stand alone service which will monitor Octave Packages repository for any merged PR and update the function search index website accordingly. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~350 hours (medium) | : ~350 hours (medium) | ||
* '''Required skills''' | * '''Required skills''' | ||
: Octave, | : Octave, Bootstap 5 framework | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: [https://octave.discourse.group/u/ | : [https://octave.discourse.group/u/pr0m1th3as Andreas Bertsatos] | ||
== | <!-- | ||
== ode15{i,s} : Matlab Compatible DAE solvers == | |||
[https:// | An initial implementation of Matlab compatible Differential Algebraic Equations (DAE) solvers, {{manual|ode15i}} and {{manual|ode15s}}, based on [https://computing.llnl.gov/projects/sundials SUNDIALS], | ||
was done by [https://gsoc2016ode15s.blogspot.com/ Francesco Faccio during GSoC 2016]. The code is maintained in the main Octave repository and consists mainly of the following three files: [https://hg.savannah.gnu.org/hgweb/octave/file/tip/libinterp/dldfcn/__ode15__.cc {{path|libinterp/dldfcn/__ode15__.cc}}], [https://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/ode/ode15i.m {{path|scripts/ode/ode15i.m}}] and [https://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/ode/ode15s.m {{path|scripts/ode/ode15s.m}}]. | |||
The {{manual|decic}} function for selecting consistent initial conditions for ode15i can be made more Matlab compatible by using [http://dx.doi.org/10.1515/JNMA.2002.291 another algorithm]. Another useful extension is to make ode15{i,s} work with datatypes other than double and to improve interpolation at intermediate time steps. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~350 hours (medium) | : ~350 hours (medium) | ||
* '''Required skills''' | * '''Required skills''' | ||
: Octave, C/C++ | : Octave, C/C++; familiarity with numerical methods for DAEs | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: [https://octave.discourse.group/u/ | : Francesco Faccio, [https://octave.discourse.group/u/cdf Carlo de Falco], [https://octave.discourse.group/u/marco_caliari Marco Caliari], Jacopo Corno, [https://octave.discourse.group/u/schoeps Sebastian Schöps] | ||
--> | |||
<!-- | |||
== PolarAxes and Plotting Improvements == | == PolarAxes and Plotting Improvements == | ||
Octave currently provides | Octave currently provides support for polar axes by using a Cartesian 2-D axes and adding a significant number of properties and callback listeners to get things to work. What is needed is the implementation of a dedicated "polaraxes" object in C++. This will require creating a new fundamental graphics object type, and programming in C++/OpenGL to render the object. When "polaraxes" exists as an object type, then m-files will be written to access them, including polaraxes.m, polarplot.m, rticks.m, rticklabels.m, thetaticks, thetaticklabels.m, rlim.m, thetalim.m. This relates to bug {{bug|49804}}. | ||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
Line 129: | Line 122: | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: [https://octave.discourse.group/u/rik Rik] | : [https://octave.discourse.group/u/rik Rik] | ||
--> | |||
<!-- | |||
== Table datatype == | == Table datatype == | ||
Line 141: | Line 136: | ||
: Octave, C/C++ | : Octave, C/C++ | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: [https://octave.discourse.group/u/ | : ??? | ||
--> | |||
<!-- | |||
== TISEAN package == | |||
The [[TISEAN package]] provides an Octave interface to [https://www.pks.mpg.de/~tisean/Tisean_3.0.1/index.html TISEAN] is a suite of code for nonlinear time series analysis. In 2015, another GSoC project started with the work to create interfaces to many TISEAN functions, but [[TISEAN_package:Procedure | there is still work left to do]]. There are missing functions to do computations on spike trains, to simulate autoregresive models, to create specialized plots, etc. These are of importance for many scientific disciplines involving statistical computations and signal processing. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | |||
: ~350 hours (medium) | |||
* '''Required skills''' | |||
: Octave, C/C++; FORTRAN API knowledge | |||
* '''Potential mentors''' | |||
: [https://octave.discourse.group/u/kakila KaKiLa] | |||
--> | |||
== | <!-- | ||
== Better tab completion == | |||
[https:// | Links: [https://savannah.gnu.org/bugs/index.php?62492 https://savannah.gnu.org/bugs/index.php?62492] and [https://savannah.gnu.org/bugs/?53384 https://savannah.gnu.org/bugs/?53384] | ||
Description: currently pressing Tab at the Octave command prompt attempts autocompletion of all identifiers in scope (variables, functions, classdefs etc) as well as files and directories in the path. It is not context sensitive. | |||
Project: Improve tab completion. For example, | |||
* | * Typing | ||
: load x | |||
and then pressing tab should ideally give all loadable files and directories starting with x, not unrelated results like variables or functions. | |||
* Typing | |||
:cd | |||
and tab should only give directories. | |||
* Any file and directory names that are included in the results should include those with spaces and special characters including those that would be interpreted as operators by Octave. | |||
* Typing commands like | |||
: axis | |||
or | |||
: format | |||
and pressing tab should give only those options relevant to that command. E.g. format can be followed by short / long / loose / compact etc but not by a file or variable. Similarly axis can be followed by ij / xy / tight / equal / actual limits etc but not by files or directories. And so on for other commands. This should be made possible for both preexisting commands and for yet-to-be-written commands without any rewriting of existing function code or documentation. | |||
To get more examples, see how bash completion works. You can type git or hg and then tab and it will give the list of available commands. If you type "sort --r" and then tab, it gives the list of options to sort starting with "--r", etc. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~350 hours ( | : ~350 hours (medium) | ||
* '''Required skills''' | * '''Required skills''' | ||
: | : ??? | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: | : ??? | ||
--> | |||
== | <!-- | ||
== Graphics rendering back to front sorting == | |||
Several incompatibilities have been identified in how Octave plots transparent objects in 3D, causing certain transparent objects to hide opaque objects behind them even though they're not supposed to. The vast majority of them were isolated to one problem: if the objects to be drawn are rendered such that the one farthest away from the viewer is rendered first and nearer objects are rendered on top of that, then transparency would be automatically achieved, but this needs very careful coding to stay performant and to avoid rendering objects that will be overwritten fully by others. See [https://savannah.gnu.org/bugs/?57980] for a summary. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~350 hours (medium) | : ~350 hours (medium) | ||
* '''Required skills''' | * '''Required skills''' | ||
: | : ??? | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: | : ??? | ||
--> | |||
<!-- | |||
== Symbolic package == | |||
The [[Symbolic package]] provides symbolic computing and other [https://en.wikipedia.org/wiki/Computer_algebra_system computer algebra system] tools via the [https://sympy.org SymPy Python library]. GSoC projects in 2016 and 2022 improved the package. | |||
There are no specific plans for Symbolic in GSoC 2023, but improvements elsewhere that would help Symbolic include: | |||
* Developing the Octave-Pythonic package. | |||
* Fix the storage of non-expressions by working with upstream SymPy: currently we rely on deprecated functionality in SymPy. | |||
* Improvements and fixes to classdef-related issues in Octave itself. | |||
* Developing the Octave Jupyter kernel. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | * '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | ||
: ~350 hours (medium) | : ~350 hours (medium) | ||
* '''Required skills''' | * '''Required skills''' | ||
: | : ??? | ||
* '''Potential mentors''' | * '''Potential mentors''' | ||
: | : ??? | ||
--> | |||
= Project sizes = | = Project sizes = |
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