Home for GSAS-II: crystallographic and diffraction-based structural characterization of materials
C-Rank Grade: B (Solid) - 51/100
External PR Merge Rate: 100%
Response Time: <1h
First Timer Success: -
AdvancedPhotonSource/GSAS-II has a recorded first-timer success rate of 0.0%. Repositories ranked B typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in AdvancedPhotonSource/GSAS-II respond to incoming external pull requests in approximately 0.7 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 51.5 places AdvancedPhotonSource/GSAS-II in the B tier.
The external contributor pull request merge rate for AdvancedPhotonSource/GSAS-II is 100.0%, based on public PR activity from non-core contributors.
AdvancedPhotonSource/GSAS-II currently has 3 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".
Highly welcoming maintainers in AdvancedPhotonSource/GSAS-II. Prompt code reviews with positive guidance for new contributors.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/AdvancedPhotonSource/GSAS-II?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
Calculating local time...
Calculating local time...
Detected: UTC
Maintainers are most responsive around 00:00 UTC (00:00 UTC in your timezone). Recommended submission window is Monday - Friday from 00:00 to 04:00 UTC (00:00 - 04:00 UTC local).
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~4 hours (96% approval). Large PRs (>500 lines) take ~4 hours (45% approval). Keep your diff compact for rapid review.
Hello, I have been following the GSAS-II RMCProfile-III tutorial and found a discrepancy at Step 7. Environment: GSAS-II: #5837 RMCProfile: 6.7.9.5 macOS After completing the Rietveld refinement, the fit in GSAS-II is excellent (difference curve is essentially identical to the tutorial). I then used "Operations -> Setup RMC" to generate the RMCProfile input files. The exported files are: GaPO4-X.bragg GaPO4-X.back GaPO4-X.inst GaPO4-X.dat GaPO4-X.rmc6f When I start RMCProfile (before any RMC moves), the initial Bragg agreement is already much worse than shown in the tutorial. The tutorial reports an initial Bragg fit close to the Rietveld result, whereas I obtain Bragg Chi^2/npts ≈ 100 immediately after export. Observations: The GSAS-II Rietveld refinement is excellent. The discrepancy is already present before any RMC moves. Adding FITTED_SCALE to the BRAGG section improves the agreement, but the initial Bragg Chi^2/npts is still around 20. Using both RECALCULATE and NO_RECALCU
After running the Unit Cells List ``Run k-SUBGROUPSMAG'' command, the General "Make subgroups project files(s)" command should make magnetic .gpx files.
Rate what actually matters after opening a pull request here.
Rate your first-hand PR experience (review speed, maintainer responsiveness, and onboarding ease) to help other contributors.
When evaluating whether to contribute to AdvancedPhotonSource/GSAS-II, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of AdvancedPhotonSource/GSAS-II acknowledge new external contributions in approximately <1 hour. Out of all submitted pull requests from non-core authors in the last 180-day window, 100.0% were successfully merged into the primary branch.
AdvancedPhotonSource/GSAS-II has a recorded first-timer success rate of 0.0%. Repositories ranked Solid typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~<1 hour. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 51.5 places AdvancedPhotonSource/GSAS-II in the Solid tier.
The external pull request merge rate is 100.0%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
Yes, AdvancedPhotonSource/GSAS-II currently has 3 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.
All metrics displayed for AdvancedPhotonSource/GSAS-II are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.