Hi, this was my first try at learning about data visualization, aside from a few matplotlib and Seaborn (Python) and d3.js (JavaScript) graphs I'd made earlier. Encouraged and inspired by the #30DayChartChallenge Twitter community, I experimented, had fun, and gained skills in finding data sources, differentiating the various kinds of charts, using pandas and numpy to work with the data, and writing matplotlib code. A couple of the projects also use scipy, plotly, seaborn, holoviews bokeh, streamlit, or R.
Intro to the 30 Day Chart Challenge
![](/roannav/30DayChartChallenge2022/raw/main/day01_part_to_whole/final/day01_part_to_whole.png)
![](/roannav/30DayChartChallenge2022/raw/main/day02_pictogram/final/day02_pictogram.png)
![](/roannav/30DayChartChallenge2022/raw/main/day03_historical/final/day03_historical_timeline.png)
Historical Timeline - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day04_flora/final/day04_flora.png)
![](/roannav/30DayChartChallenge2022/raw/main/day05_slope/final/day05_slope.png)
![](/roannav/30DayChartChallenge2022/raw/main/day06_data_OWID/final/day06_data_OWID.png)
Relational Plot - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day07_physical/final/Nerds_distribution.png)
![](/roannav/30DayChartChallenge2022/raw/main/day08_mountains/final/day08_mountains_v2.png)
![](/roannav/30DayChartChallenge2022/raw/main/day09_statistics/final/day09_statistics.png)
Histogram, Poisson Distribution - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day10_experimental/final/day10_experimental.png)
![](/roannav/30DayChartChallenge2022/raw/main/day11_circular/final/birds.png)
![](/roannav/30DayChartChallenge2022/raw/main/day12_theme_The_Economist/final/day12_TheEconomist.png)
Stacked Bar Chart - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day13_correlation/final/day13_correlation.png)
Heat Map, Regression Plot - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day14_3D/final/education.png)
![](/roannav/30DayChartChallenge2022/raw/main/day15_multivariate/final/heart.png)
![](/roannav/30DayChartChallenge2022/raw/main/day16_environment/final/plastics.png)
![](/roannav/30DayChartChallenge2022/raw/main/day17_connections/final/macbeth.png)
![](/roannav/30DayChartChallenge2022/raw/main/day18_data_OECD/final/tax.png)
![](/roannav/30DayChartChallenge2022/raw/main/day19_global_change/final/energy_tech_costs.png)
Time Series Chart - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day20_new_tool/final/day20_new_tool.png)
Stacked Area Chart - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day21_down_upwards/final/candlestick.png)
Candlestick Chart - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day22_animation/final/ev_sales.gif)
Animated Line Graph - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day23_tiles/final/day23_tiles.png)
![](/roannav/30DayChartChallenge2022/raw/main/day24_theme_Financial_Times/final/day24_financial_times.png)
Time Series Graph - about - code
![](/roannav/30DayChartChallenge2022/raw/main/day26_interactive/final/college_acceptance_rates.gif)