Talk:GRASS Developer Summit Raleigh 2025: Difference between revisions

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* Fix uninitialized variables in DOutFile() method: ([https://github.com/OSGeo/grass/pull/5650 PR])
* Fix uninitialized variables in DOutFile() method: ([https://github.com/OSGeo/grass/pull/5650 PR])
* Update figures related to GUI: ([https://github.com/OSGeo/grass/pull/5651  PR])
* Update figures related to GUI: ([https://github.com/OSGeo/grass/pull/5651  PR])
* g.proj: upgrade to format=proj4 style text output ([https://github.com/OSGeo/grass/pull/5722  PR])
* g.proj: upgrade to format=wkt style text output ([https://github.com/OSGeo/grass/pull/5727  PR])
* g.proj: upgrade to format=shellstyle text output ([https://github.com/OSGeo/grass/pull/5728  PR])


Working on integration of the Jupyter notebooks to GUI (work for the whole week :-))
Working on integration of the Jupyter notebooks to GUI (work for the whole week :-))

Revision as of 15:15, 27 May 2025

Quick links: Meeting page | Reports | Sponsors

Organizing Team

  • Initial planning: Vaclav Petras, Anna Petrasova, Veronica Andreo, Corey White, Lois Utt, Sarah White, Doug Newcomb, Huidae Cho, Veronica Andreo (Organizing Committee)
  • Budget: Vaclav Petras, Lois Utt, Anna Petrasova
  • Raising support: Helena Mitasova, Vaclav Petras, Anna Petrasova, Michael Barton, Giuseppe Amatulli (NSF POSE project proposal authors)
  • Travel: Lois Utt
  • Venue: Vaclav Petras, Lois Utt
  • Meals: Lois Utt, Sarah White, Vaclav Petras, Corey White, Anna Petrasova
  • Agenda: Vaclav Petras, Huidae Cho, Anna Petrasova
  • Wiki page: Vaclav Petras, Anna Petrasova
  • Swag: Sarah White, Vaclav Petras, Anna Petrasova, Corey White
  • Promotion, invitations, and social media: Vaclav Petras, Sarah White, Corey White, John Vogler
  • Lightning talks organization: Vaclav Petras, Zachary Arcaro, John Vogler
  • Lightning talk speakers: Vaclav Petras (welcome), Markus Metz and Markus Neteler (talk presented by Vaclav Petras), Anna Petrasova, Veronica Andreo, Robert Dzur, Nick Brady, Huidae Cho, Gregory Power, Doug Newcomb, Caitlin Haedrich
  • Photography: Caitlin Haedrich, Māris Nartišs, Pratikshya Regmi
  • Portrait photography: Riya, Caitlin Haedrich, Natalie Trso

Detailed Schedule

Day 1, Monday, May 19

Location: Talley Student Union, 2610 Cates Ave (map)

Room: 5101-Executive Board Room

Highlighted topic: Contributing to GRASS. Getting started. Is it easy to contribute?

Time Slot
8:30-9:00 Breakfast Catered breakfast on site. Meet people, and plan your personal agenda for the day.
9:00-10:00 Morning opening sessions What to expect from the event, contributing to GRASS using Git and GitHub, making your first contribution.
10:00-11:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
11:00-11:20 Self-organized feedback session i.hyper: Integrating Hyperspectral Imagery Processing into GRASS - Alen Mangafić
11:20-11:40 Self-organized feedback sessions
11:40-12:00 Self-organized feedback sessions Project Image - Vaclav Petras
12:00-13:00 Lunch Catered food on site.
13:00-17:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
18:00 Dinner We will walk to Trophy Brewing & Pizza (directions, 30 min walk from Talley)

Day 2, Tuesday, May 20

Location: Talley Student Union, 2610 Cates Ave (map)

Room: 5101-Executive Board Room

Highlighted topics: Hydrology and Interfacing with R and QGIS (gathering user feedback, testing, discussing with developers, developing action items)

Time Slot
8:30-9:00 Breakfast Breakfast on site. Start the day, meet people, and plan your personal agenda for the day.
9:00-10:00 Morning opening sessions Introduction to writing GRASS tools, program for the day.
10:00-11:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
11:00-11:20 Self-organized feedback session fasterRaster R package - Adam Smith
11:20-11:40 Self-organized feedback sessions Hydography90m + Geocomputation Courses - Giuseppe
11:40-12:00 Self-organized feedback sessions Flood modelling with grass and itzi ([1]) - Laurent Courty
12:00-13:00 Lunch Case dining hall
13:00-17:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
18:00 Dinner Served in Jordan Hall at the Center for Geospatial Analytics, evaluate the day's accomplishments, plan and prioritize for the next few days.

Day 3, Wednesday, May 21

Location: Talley Student Union, 2610 Cates Ave (map)

Room: 5101-Executive Board Room

Highlighted topic: Non-coding contributions, natural language translation, and internationalization.

Time Slot
7:00-9:00 Breakfast Case dining hall
9:00-10:00 Morning opening sessions Introduction to non-coding contributions, tutorials, contributing examples, natural language translation and internationalization (procedures, glossaries, code customization, translation).
10:00-11:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
11:00-11:20 Self-organized feedback session Easier access to GRASS tools - Vaclav Petras
11:20-11:40 Self-organized feedback sessions
11:40-12:00 Self-organized feedback sessions GRASS backend for xarray and temporal framework global variables ([2]) - Laurent Courty
12:00-13:00 Lunch Served on site. Eat, drink, and continue the discussion from the feedback sessions.
13:00-17:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
18:00 Dinner [https://maps.app.goo.gl/1E39eySMVaxYJUUS8 Picnic at Pullen Park, shelter #3. In case of bad weather, dinner at the Center for Geospatial Analytics.

Day 4, Thursday, May 22

Location: Center for Geospatial Analytics, Jordan Hall, 2800 Faucette Drive (map)

Room: 5103 (straight from the two elevators, at the end of the hallway)

Highlighted topic: Project vision and computational engine use case.

Time Slot
8:00-9:00 Breakfast On site. Start the day, meet people, and plan your personal agenda for the day.
9:00-10:00 Morning opening sessions Project vision and the computational engine use case (missing features, documentation, user groups).
10:00-11:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
11:00-11:20 Self-organized feedback session NSF POSE I-Corps Interviews - Corey White
11:20-11:40 Self-organized feedback session YAIT - Yet Another Interface to Tools - Vaclav Petras
11:40-12:00 Self-organized feedback session Modernizing Color Tables (Brendan)
12:00-13:00 Lunch On site. Eat, drink, and continue the discussion from the feedback sessions.
13:00-16:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
16:00-17:00 Lightning talks Fast-paced talks, showcasing applications of GRASS, room 5111.
18:00 Reception Connect with researchers, government professionals, and industry collaborators, rooms 5111 and 5119.

Day 5, Friday, May 23

Location: James B. Hunt Jr. Library, 1070 Partners Way - Centennial Campus (map)

Room: Faculty Research Commons - 5100 (floor plan)

Highlighted topic: GRASS project's future course.

Time Slot
7:45-8:15 Breakfast Hotel Aloft (2nd floor). Search for Lois!
9:00-10:00 Morning opening sessions GRASS project's future course.
10:00-11:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
11:00-12:00 PSC meeting Project Steering Committee meets (public).
11:00-11:20 Self-organized feedback session Your topic here
11:20-11:40 Self-organized feedback sessions Your topic here
11:40-12:00 Self-organized feedback sessions Rescheduled for Saturday
12:00-13:00 Lunch Walk to On the Oval Culinary Creations. Eat, drink, and continue the discussion from the feedback sessions.
13:00-17:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
18:00 Dinner Dinner on your own. Corey White will organize trip to downtown. Bus 41 from Hunt library to hotel and then walk.

Day 6, Saturday, May 24

Location: James B. Hunt Jr. Library, 1070 Partners Way - Centennial Campus (map)

Take bus 41 at 8.30 from Aloft.

Room: Faculty Research Commons - 5100 (floor plan)

Highlighted topics: NSF POSE project evaluation.

Time Slot
8:30-10:00 Breakfast We will have breakfast (yogurt, granola, pastries) at Lake Raleigh. Feel free to bring your own coffee.
10:00-11:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
11:00-11:20 Self-organized feedback session GRASS roadmap and future (Vaclav Petras)
11:20-11:40 Self-organized feedback sessions GRASS tools: core and additional functionality (MartinL)
11:40-12:00 Self-organized feedback sessions Jupyter integration into GUI (Linda Karlovska)
12:00-13:00 Lunch Pizza. Eat, drink, and continue the discussion from the feedback sessions.
13:00-17:00 Focus time Time to work on your laptop, whiteboard solutions with a group, or anything in between.
18:00 Dinner Player's Retreat.

Daily tasks for participants

  • List all the things you are working on in the Participant reports section below. Update the list each day. Include things you work on with other people.
  • If you want to discuss something with the whole group, add yourself to a Self-organized feedback sessions slot in the schedule above or tell Vaclav (Vashek) Petras.
  • For people with triage access and above: If you are or will be working on an issue or on a PR which is not originally submitted by you, assign yourself to the issue or PR. (You can unassign yourself later if you change your mind.)

Participant reports

Per-person reports from the meeting.

Giuseppe Amatulli | Yale University

Veronica Andreo | CONICET - Instituto Gulich

  • GitHub contributions
  • Enhanced the GRASS website footer.
  • Sync icons on the Tutorials website footer to those on the main website.
  • Fixed description tags and their display on the tutorials website.
  • Fixed typos in Get Started tutorials.
  • Fixed GRASS page on OSGeo website [3]
    • Changed logo, removed GIS from the name, fixed old links.
  • Posted on social media.
  • Discussion about hyperspectral with Alen and Anna.
  • Expanded the GRASS acronym on the home page.
  • Removed GIS from GRASS name on the website.
  • Reviewed tutorials by Huidae, Michael Barton and Adam Smith.
  • Added external tutorials by Huidae and the one from FOSS4G 2024.
  • Enhanced and added 7 time series tutorials that were on hold from 2024.
  • Added lightbox class in get-started tutorials and others so images can be clicked on.
  • GRASS PSC admin stuff.
  • Participated of the PSC meeting.
  • Talked to Tonis Kardi from FOSS4G EU LOC to have a "State of GRASS" talk in the program. Alen will be presenting.
  • Gave a lightning talk on Thu: GRASS-fed species distribution models.
  • Discussed with Brendan, Corey, and Mimi about tutorials.

Abdullah Azzam | New Mexico State University

Monday 5/19

  • Created first PR; fixed broken links on the website #538

Tuesday 5/20

  • Started working on a new addon and switched to cookiecutter python template from the C implementation.
  • Helped Andres compile OpenMP in Mac.

Wednesday 5/21

  • Drafted the addon and discussed the changes with Dr. Cho and Anna.

Thursday 5/22

  • Pushed a new GRASS Addon r.curvenumber #1403

Friday 5/23

  • Addressed the fixes and issues in r.curvenumber and discussed another addon with Dr. Cho

Saturday 5/24

  • Discussed and developed another addon r.scs.runoff with Anna.

Laura Belica | NC State University

  • my focus was on developing a draft/test tutorial (in Quarto) for a standard basic hydrological study workflow [extraction of nested as well as disconnected study streams and watersheds informed by ground-truthed stream CHIP and outlet point data and estimating stream segment length, watershed area, mean slope, etc.]. The tutorial includes the crucial pre-work of how to figure out the most appropriate project/location and extent for elevation data import [e.g., if region of interest is much smaller than tile extent and/or spans multiple tiles] as well as considerations of some of the downstream impacts of resolution, extent, region etc. when additional datasets with different resolutions and extents (e.g., roads, land cover, sampling points) may be incorporated later.

19 May

  • discussed a novice user issue with 'moving' vector data from one project/location to another with Vero and learned a neat GUI option
  • revised and added workflow tutorial text

23 May

  • tested workflow

24 May

  • worked on tutorial qmd
  • explored different alternatives for transforming aspect for computation of mean watershed aspect within GRASS and with R and Python

Shonil Sateesh Bhide | NC State University

  • CI optimization

Huidae Cho | New Mexico State University

  • CMake, conda, CI, Mentoring

Monday 5/19

Tuesday 5/20

Wednesday 5/21

  • Translation Talk
  • Translation Discussion with Edouard
  • Flow Direction Meeting with Ondrej, Ondrej's Student, Martin, and Markus Metz
  • CMake and Conda Testing on Linux
  • CMake Testing on Windows
  • Mentoring: Chung-Yuan, Abdullah

Thursday 5/22

Friday 5/23

  • CMake and Conda Testing on Linux
  • CMake Testing on Windows
  • CI: Discussion with Edouard
  • Mentoring: Chung-Yuan, Abdullah

Saturday 5/24

Edouard Choinière

  • Quick ideas, way too much for a week: Helping others (may take a reasonable part of the time), managing CI, setting up localization template updating workflow, backporting tool? Pytest/coverage improvements? Discuss and design other projects, to work on during the year. Open to change on other priorities once there, anything that is useful. Maybe make a little progress on high dpi GUI, especially on Windows.
  • Weekend before sprint:
    • Clear up Renovate PRs to not use CI time during the sprint, reviewing and merging: #5664, #5665, #5666, #5667, #5668
    • PR to avoid some CI run time for the sprint: #5670
    • Reviewed open PRs for PRs that were mergeable before the sprint, updated outdated PRs to avoid having it needing CI time during sprint. Only ended up merging #5658, but another reviewed one that might still need changes: #5628
  • Monday May 19, 2025:
    • PR got merged: #5670,#5550
    • Reviewed PRs: #5671, #5672
    • Discussions:
      • Shonil Sateesh Bhid & Shuham on their CI & pytest work and project.
      • Māris Nartišs about a potential issue and improvement for it. Will be discussed in the security reporting tab, also allowing to test the security vulnerability reporting process. + Research on existing solutions
    • Reviewed: #5682, #5660,
    • Reviewed, edited and merged: #3672
    • Discussed/helped user for: #5678 and #5684
    • Long discussion and vision planning for windows scripting with Vaclav, concerning #5624. Tested alternatives and tried the consequences of that PR. This older PR finally got merged.
    • Created PRs for NSIS installer: #5685 and also #5686, which should address #5663. Still needs to test it.
    • Agreed on convention for titles with Vaclav, unblocking #5341
    • Found a name with Ondrej and finally merged older PRs of an external contributor #5473 and #5474
  • Thursday May 20, 2025:
  • Wednesday May 21, 2025:
    • Created a new set of GitHub rulesets for the required checks, applied with Vaclav. One of them is separated in order to increase velocity during the sprint
    • Reviewed the branch protection rules for grass-addons repo with Vaclav. Creating rulesets will be possible after the sprint with the info collected.
    • Reviewed the security reporting settings and secret scanning settings with Vaclav for the main grass repo.
    • Got shown by Huidae Cho how to update the translation files, and reviewed Weblate settings. No settings changed, but a backup stored for 30 days was kept.
    • Created a first implementation of a translation file update workflow
    • Tested out the two NSIS installer PRs, the first one, for installing the VC runtime earlier doesn't work as expected, and after more research I don't know enough to fix it. The second PR with High-DPI improvement was correct and got merged #5685
    • Helped a student set up a grass installation on WSL with conda.
    • PRs created: #5736, #5734
    • My PRs that got merged: #5685, #5341, #5689
    • Reviewed and merged multiple PRs, restarting failed required checks of the previous night.

Laurent Courty

  • Objectives: An xarray backend for GRASS STRDS. Fixing related issues
  • May 20
    • Presented itzi
    • Uploaded arm64 wheels to PyPI for MacOS and Linux ([4])
    • Discussed with other developers about issue #629
  • May 21
    • Uploaded xarray-grass to PyPI
    • Added CI tests to xarray-grass
    • Discussed with the group about the xarray-grass backend
    • Discussed with the group about solving mapset switching in the temporal framework (issue #629)
    • Created PR #5735 to address issue #629
  • May 22
    • Fix bug in PR #5735
  • May 23
    • Continue working on xarray-grass
    • Discussed with Vashek about the GRASS tool's python interface
  • May 24
    • Continue working on xarray-grass
    • published xarray_grass-0.1.0a2 on PyPI
    • Discussed with Vashek about the grass session issues in python

Robert S. Dzur | Bohannan Huston, Inc.

  • r.in.pdal

David W. Farris | East Carolina University

  • A tool to calculate gravity terrain corrections

Neel Ghoshal | NC State University

• LLM for helping users find tools
5/19
• Learnt how to PR (#5674)
• Setup GRASS on system
• Found small issue with compilation document
• Discussed about the possible use case of LLM for helping users find tools
5/20
• Learnt about cookie cutter
• Set up wsl on system
• Compiled GRASS
• Listed data sources for LLM training
5/21
• Extracted tool information from Markdown files
• Started off with data cleaning
5/22
• Worked on LLM setup
5/23
• Ran and finetuned a basic test LLM model for extracted data

Caitlin Haedrich | NC State University

  • Event photographs, food coordination
  • git/github mentoring
  • GRASS mentoring
  • Lightning Talk preparation
  • Preparing workshop for Geomorphometry2025

Brendan Harmon | Louisiana State University

  • Plan: developing (r.earthworks) addon & tutorials
  • Log: GitHub activity
  • Activities: published r.earthworks to addons repo, discussed modernizing colors, & started map algebra tutorials
  • Unfinished: develop map algebra tutorials, open issue about modernizing color, start discussion on citations, open issue about v.to.rast bug, etc...

Linda Karlovska | Czech Technical University in Prague

  • Fix uninitialized variables in DOutFile() method: (PR)
  • Update figures related to GUI: (PR)
  • g.proj: upgrade to format=proj4 style text output (PR)
  • g.proj: upgrade to format=wkt style text output (PR)
  • g.proj: upgrade to format=shellstyle text output (PR)

Working on integration of the Jupyter notebooks to GUI (work for the whole week :-))

Martin Landa | Czech Technical University in Prague

  • Tutorial: GISMentors courses updated (PR)
  • libgis: G__usage_markdown() include tool label in metadata if defined (PR)
  • PyGRASS: Module description property not defined always (PR)
  • Website: OpenGeoLabs commercial support (PR)
  • v.select: create output also when no features found (PR)
  • wxGUI: avoid creating nested list of errors (Graphical modeler) (PR)
  • wxGUI/gmodeler: refactor - move ModelParamDialog to dialogs.py (PR)
  • GUI: make Python editor dockable (PR)
  • r.relief: module label changed to description (PR)
  • GUI: propagate previously defined where option value (PR)
  • GUI: always show 'Close dialog on finish' option (PR)
  • GUI: do not remove parameter value on dialog update event (PR)
  • documentation: add miscellaneous tools too full index (markdown) (PR)

Nicklas Larsson | Hungarian National Museum

Planned work: CMake build system; perhaps Conda recipe

GitHub activity

  • Preparation for CMake build conforming to Filesystem Hierarchy Standard (FHS), resolving resource paths for both the current and FHS in code. In collaboration with Huidae Cho and with important input from Vaclav Petras (PR5630)
  • Helped young students in build configuration and debugging techniques.
  • Discussion with several participants on solutions to publish a GRASS package to Conda-forge.

Chung-Yuan Liang

  • r.horizon
    • PR4213
    • Discussed with Vashek, Anna, and Huidae regarding parallelization performance.
  • r.mapcalc
    • PR5742
    • Parallelized a part of r.mapcalc.
    • Discussed with Anna and Huidae how to improve the parallelization.
    • More work is needed for better efficiency for threads > 4.
  • r.univar
    • PR5748, PR5750
    • Created a test for large data and parallel computations.
    • Applied Kahan sum to avoid accumulations of floating point errors.
    • Update reference numbers in other testing scripts that use r.univar.
  • Discussing how to improve I/O and memory buffers for raster data in the parallelization aspect.

Andres Lucero | Bohannan Huston Inc

  • r.in.pdal

Alen Mangafić | Geodetic Institute of Slovenia

Monday May 19

  • Presentation of i.hyper, add-on which offers hyperspectral data support in GRASS.
  • Architecture of the multi-module addon

Tuesday May 20

  • i.hyper.import module: importing EnMAP imagery as 3D raster map
  • i.hyper.preproc module: draft

Wednesday May 21

  • i.hyper.import module: added option to generate RGB, CIR, SWIR or custom composite during import
  • i.hyper.preproc module: implementing Savitzky-Golay filter with options for polynomial order, derivative order and window width

Thursday May 22 - 24

  • i.hyper.import module: adding options for handling invalid bands, null values and clamping negative values
  • i.hyper.export module: exporting hyperspectral 3D rasters as stacked GeoTiff
  • commition to personal, public repo
  • drafting future plans:
    • i.hyper.preproc PCA, KPCA, continuum removal an wavelet transformation
    • i.hyper.import PRISMA and Hyperion support
    • i.hyper.export: HDF5, Zarr and IMG spport
    • i.hyper.explore: new submodule for spectra visualization
  • Submission of the details of the "State of GRASS" talk for FOSS4GE 2025.

Helena Mitasova | NC State University

  • standardized data set and related tutorials
  • documentation for interpolation tools
  • collaborate/coordinate/discuss hydrology tools (analytics, simulations, soil properties inputs)
  • assist with wiki cleanup if needed

Monday May 19

  • investigated issues with v.surf.rst documentation in source code, tested and identified fixes needed
  • discussed coupling GRASS with Blender versus potree for 3D object rendering with Brendan, Anna and Caitlin (for TL activities and other applications)
  • discussed soil data for runoff estimation and other hydro topics, to be worked on on day 2

Tuesday May 20

  • worked with Corey on fixing v.surf.rst documentation, discussed ideas for improvements and for documentation / tutorial for cross-valiadation
  • discussed suggestions for graphics and examples to be inculded in v.surf.rst docs with Michelle
  • discussed new developments in hydrology tools
  • experimented with basic/standardized versus specialized data sets for documentation and tutorials

Wednesday May 21

  • explored existing tutorials, emailed Paulo about finishing the one on interpolation
  • tested NM basic data set with GIS582 class assignment (very cool)
  • discussed design of Jnotebooks that would work with various localized data with Caitlin

Thursday May 22

  • discussed needed capabilities for a more advanced color ramp processing tool with Brendan
  • added further ideas to basic dataset document after talking to Vero - we just need standardized names for the localized tutorials to work
  • discussed infiltration fix pull request for r.sim.water with Anna - more work is needed

Māris Nartišs

GitHub activity

  • Taking photos of the event
  • Introduced a new GRASS core module r.smooth.edgepreserve
  • Discussed architecture of hyperspectral data import and per-processing tool
  • Discussed testing and organizing AI modules downloading data from internet
  • Prepared and gave a presentation on code preparation for translations (best practice)
  • Debugging translation file updating with Edouard
  • Changed default multiprocessor setting to always use maximum number of available threads
  • Unified max process setting handling in all modules that use default parser parameter
  • Discovered and supervised fixing a bug in r.univar parallelization code
  • Fixed initialization of private variables in OpenMP threads in r.univar
  • Discussed requirements for raster data reading parallelization (GRASS 9)
  • Discussed future features to be implemented (long term view)
  • Run modules in tests under valgrind; opened multiple bug reports, but log file analysis is incomplete

Ondřej Pešek | Czech Technical University in Prague

  • GitHub activity
  • Refactoring, fixing, improving, discussing g.gui.gmodeler
  • Discussing hyperspectral with Alen Mangafic
  • Discussing jupyter in single GUI with Linda Karlovska
  • PyGRASS
  • Docs
  • CQ
  • Reviewing PRs, PR archeology

Vaclav (Vashek) Petras | NC State University

  • GitHub activity
  • My focus: Getting feedback and ideas for computational engine use case, APIs, funding.
  • Summit organizing
  • Implementing rebranding on GitHub (repos, teams)
  • Feedback session on project image
  • Feedback session on easier access to tools (without project)
  • Feedback session different Python APIs to access tools
  • Feedback session on roadmap and future of GRASS
  • Discussed pygrass access to tools with Martin Landa and Ondřej Pešek (e.g. raster = Tools(group="raster"); raster.slope_aspect(...))
  • Discussed LLMs with Neel Ghoshal, Riya, Pratikshya Regmi
  • Discussed session setup Martin Landa
  • Discussed conda with Nicklas Larsson
  • Discussed hyperspectral with Alen Mangafić, Veronica Andreo, and Anna Petrasova
  • Discussed code for new smoothing tool, integer overflows, translations with Māris Nartišs
  • Discussed parallelization with Māris Nartišs, Chung-Yuan Liang, Anna Petrasova
  • Compared setup of GRASS session and project in fasterRaster, QGIS, and GRASS itself with Adam Smith
  • Discussed potential of Pixi for packaging or compilation with Gregory Power
  • Discussed itzi model distribution issues with Laurent Courty
  • Discussed NumPy and xarray integrations with Laurent Courty
  • Discussed r.horizon parallelization with Chung-Yuan Liang and Anna Petrasova
  • Discussed Jupyter integration into GUI with Linda Karlovska
  • Answered user, coding, and setup questions for Neel Ghoshal, Abdullah Azzam, Gregory Power, and Alen Mangafić
  • Participated in the hybrid PSC meeting (presented differences between OSGeo project and NumFOCUS project)
  • Drafted modifications of subprocess calling for tools in Python API
  • Prototype for running tools from Python with NumPy arrays

Anna Petrasova | NC State University

  • GitHub activity
  • plan: mentoring, documentation
  • Monday
    • discussing hyperspectral implementation with Alen
    • helping mentee David Farris implementing his gravity correction addon
  • Tuesday
    • delivered intro to creating an addon, documentation
    • mentoring Alen, Abdullah
    • discussing bug in i.his.rgb with Jayneel
    • reviews
  • Wednesday
    • discuss and demonstrate tutorials page
    • mentoring Alen, Jayneel
    • call with GSoC student
  • Thursday
    • lightning talk
    • discussing openmp implementations for r.horizon, r.mapcalc, default thread number
  • Friday
    • grass repo README
    • reviews

Gregory Power | Town of Cary

  • Documentation
  • Investigate Pixi to manage installation and build procedures.
  • Learned more about GRASS's vector format and modules
    • Need a deeper explanation on how the different vector subtypes behave
    • Need a cleaner output of v.clean so users can inspect error types
    • Documentation could use a comparison of GRASS's topological model and components with that of OGC's Simple Features

Pratikshya Regmi | NC State University

  • Event photographs and videos
  • Opened a pull request to change GRASS GIS to GRASS on the documentation (this was my first contribution to GRASS)
  • Worked on preparing the mock document for LLM RAG
  • Wrote a tutorial to Visualize Contour Lines with a Color Gradient with Folium.
  • Finished mockup document and testing on LLM.

Riya | Indian Institute of Technology, Roorkee

  • I am currently thinking of developing an AI Agent for the grass jupyter library which will help the users with mathematical calculations done in GIS.

Jayneel Shah | NC State University

  • improve the test coverage of imagery modules.

Adam Smith | Missouri Botanical Garden

Overall: R package fasterRaster (fielding bug reports, adding features)

Monday:

  • Assessed scope of fasterRaster issue 83

Tuesday:

  • Created a PR for fasterRaster tutorial on GRASS tutorials page.
  • Improved handling of addons, including autodetect and installing when needed, enabling easier creation of addon-dependent methods.
  • Presented *fasterRaster* package to group.

Wednesday:

  • Created fasterRaster methods for neighborhood matrices, terrain ruggedness index, and multivariate environmental similarity

Michelle (Mimi) Stephens | ERDC

  • Previous work: coupling R and Python scripts for computational analysis in GRASS.
  • Current work: Running through GRASS commands to create visual outputs that can be added to the new GRASS 8.5 manual pages - r.mapcalc, v.surf.rst, examples with topographic parameters, LinkedIn requests.
  • Tutorial for Windows users to install a WSL2 Linux environment. Creates a conda environment with wxpython, installs GRASS without requiring OSGeo installer. Fast, simple, and minimal install. Resolves various issues encountered in government due to automatic Windows updates, cyber security, vpn routing, user preference, and isolated distro can be completely removed if needed. -> Motivation for WSL2 - wanted more hands-on practice with Unix command line tools for HPC; Docker not allowed, but miniforge and Apptainer are on ERDC's HPC; able to install grass via command line (only on internet-capable HPC systems); AND - For other users that always wanted a more native feel to their grass instance!
  • Future work: Presenting on GRASS in JUNE at CERLCON.

Corey White | NC State University

  • JSON, mentoring

Doug Newcomb | Semi Retired Cartographer

  • Discussed hydroflattening method
  • Discussed direct point cloud input to v.surf.rst
  • Learning git procedures by updating branding (GRASS GIS to GRASS) for raster commands

Tuesday

  • Continued updating branding for raster commands
  • Started working on tutorial for r.hydro.flatten

Wednesday

  • Finalized Data set for for r.hydro.flatten
  • Worked on Lightning Talk for Thursday

Thursday

  • Continued work on r.hydro.flatten tutorial
  • Gave lightning talk on r.hydro.flatten

Friday

  • Worked with Rob Dzur on r.hydro.flatten workflow.
  • Explored the possibility of using r.resample.bspline for areas with high standard deviation ranges.

Natalie Trso | Balance Geo LLC

  • r.sim.water

Guests and remote participants

Luís de Sousa | University of Lisbon

  • Review outstanding PRs
  • Prepare GRASS sessions for the OpenGeoHub Summer School

Markus Neteler | mundialis

  • Support full automation of new GRASS manual pages deployment on server (upload artifacts from GitHub to OSGeo servers (grass and download))
  • Source code license documentation: Using SPDX License IDs (GitHub Issue #4190)
  • Support Wiki cleanup
  • GitHub contributions

Nishant Bansal | Indian Institute of Technology, Varanasi

  • Review the previous work on JSON during last year’s GSoC, including enhancements and the addition of JSON output support to other modules.
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