## Line Chart: Number of Fixed Packages Over Time by Unreproducibility Introduction Event ### Overview This is a line chart tracking the cumulative "Number of fixed packages" over time, from early 2018 to late 2023. The chart displays multiple data series, each representing a distinct "Unreproducibility introduced in:" event, identified by a unique numeric code. The data shows how many packages were fixed following the introduction of each specific unreproducibility issue. ### Components/Axes * **Y-Axis (Vertical):** Labeled "Number of fixed packages". The scale is non-linear, with major gridlines at 0, 200, 400, 2000, 2800, 2900, and 3000. This indicates a significant jump in scale between 400 and 2000. * **X-Axis (Horizontal):** Represents time, with major year markers for 2018, 2019, 2020, 2021, 2022, and 2023. Data points appear to be plotted at quarterly or semi-annual intervals. * **Legend:** Located at the bottom center of the chart. It is titled "Unreproducibility introduced in:" and contains 15 entries, each pairing a colored line with a numeric identifier. The legend is organized in three columns. ### Detailed Analysis **Legend Entries (Color to ID Mapping):** 1. **Red:** 1416607 2. **Light Pink:** 1498441 3. **Yellow:** 1569427 4. **Light Purple:** 1653283 5. **Dark Grey:** 1755200 6. **Bright Green:** 1448353 7. **Magenta:** 1520586 8. **Orange:** 1593430 9. **Dark Red/Brown:** 1687868 10. **Cyan:** 1776404 11. **Blue:** 1476353 12. **Light Blue/Cyan:** 1544614 13. **Dark Green:** 1622813 14. **Purple:** 1724521 15. **Olive/Brown:** 1787891 **Data Series Trends & Approximate Values:** * **1593430 (Orange):** This is the most prominent series. It shows a dramatic, near-vertical increase starting in late 2020, rising from near 0 to approximately 2880 by early 2021. It then continues a steady, shallow upward trend, reaching approximately 2970 by late 2023. * **1544614 (Light Blue/Cyan):** Shows a very sharp increase in early 2020, jumping from near 0 to approximately 450. It then plateaus, showing only a very slight increase to around 470 by 2023. * **1448353 (Bright Green):** Begins rising in mid-2018, reaching about 160 by 2019. It continues a steady, shallow upward trend, ending at approximately 210 in 2023. * **1476353 (Blue):** Starts rising in late 2018, reaching about 100 by 2019. It follows a very flat, stable trend, ending near 130 in 2023. * **1520586 (Magenta):** Begins its ascent in late 2019, rising to about 70 by 2020. It shows a slow, steady increase, reaching approximately 100 by 2023. * **1416607 (Red):** One of the earliest series, starting in early 2018. It rises to about 40 by 2019 and then plateaus, remaining between 40-60 for the rest of the period. * **1653283 (Light Purple):** Starts rising in late 2020, reaching about 60 by 2021. It shows a slow increase, ending near 80 in 2023. * **1569427 (Yellow):** Begins in early 2020, rising to about 50 by 2021. It remains relatively flat, ending near 60 in 2023. * **1687868 (Dark Red/Brown):** Starts in early 2021, rising to about 40 by 2022. It shows a slight increase, ending near 50 in 2023. * **1724521 (Purple):** Begins in early 2022, rising to about 40 by 2023. * **1622813 (Dark Green):** Starts in early 2021, rising to about 30 by 2022, and ending near 40 in 2023. * **1776404 (Cyan):** Begins in late 2022, rising sharply to about 90 by late 2023. * **1787891 (Olive/Brown):** Begins in mid-2023, rising sharply to about 80 by late 2023. * **1498441 (Light Pink):** Shows a very shallow rise starting in 2019, remaining below 30 throughout. * **1755200 (Dark Grey):** Begins in early 2022, showing a very shallow rise, remaining below 20. ### Key Observations 1. **Dominant Series:** The orange line (1593430) is a massive outlier, accounting for the vast majority of fixed packages (nearly 3000) and exhibiting a unique, explosive growth pattern in late 2020/early 2021. 2. **Two Distinct Growth Patterns:** Series generally fall into two categories: a) those with a single, sharp increase followed by a long plateau (e.g., 1544614, 1593430), and b) those with a more gradual, sustained increase over years (e.g., 1448353, 1476353). 3. **Temporal Clustering:** Several series (1593430, 1544614, 1653283, 1569427) show their primary growth phase around 2020-2021, suggesting a period of significant activity in fixing packages related to unreproducibility issues introduced around that time. 4. **Late Emergers:** A few series (1776404, 1787891) begin very late in the timeline (2022-2023) and show steep initial slopes, indicating recent, active fixing efforts for newer issues. ### Interpretation This chart visualizes the remediation history of software package unreproducibility. Each line represents the cumulative number of packages fixed due to a specific, identified root cause (the "Unreproducibility introduced in:" ID). The data suggests that unreproducibility issues are not discovered or fixed at a constant rate. Instead, there are periods of intense activity. The monumental spike for issue `1593430` indicates a single, widespread problem that, once addressed, led to a massive wave of package fixes. The sharp plateaus for other series (like `1544614`) suggest that after an initial focused effort to fix packages affected by a particular issue, few additional packages required fixes for that same cause. The more gradually rising lines (e.g., `1448353`) may represent ongoing, background maintenance or issues that are discovered and fixed incrementally over a long period. The emergence of new, steeply rising lines in 2022-2023 shows that the process of identifying and fixing unreproducibility is ongoing, with new issues being actively addressed. The non-linear Y-axis is crucial, as it allows the visualization of both the massive scale of the `1593430` fix and the more modest, but still important, trends of the other issues on the same chart.