Nicola Rennie<p>I finally got around to writing up a ✨ chart makeover ✨ blog post based on my (deliberately) bad chart created for the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a>! 📊</p><p>Link: <a href="https://nrennie.rbind.io/blog/chart-makeover/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nrennie.rbind.io/blog/chart-ma</span><span class="invisible">keover/</span></a></p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a></p>
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#30DayChartChallenge
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Nicola Rennie<p>📊 30 Day Chart Challenge Blog Post 📊</p><p>Featuring:</p><p>🧠 What I've learned<br>🤩 My favourite charts<br>🤞 Advice if you're thinking about participating!</p><p>Link: <a href="https://nrennie.rbind.io/blog/30-day-chart-challenge-2025/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nrennie.rbind.io/blog/30-day-c</span><span class="invisible">hart-challenge-2025/</span></a></p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/Python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Python</span></a> <a href="https://fosstodon.org/tags/D3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>D3</span></a> <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a></p>
Nicola Rennie<p>📆 30 Days.<br>📊 30 Charts. <br>💻 1 Dataset. </p><p>The 2025 <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> is done ✅ </p><p>Blog post coming soon!</p><p><a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a> <a href="https://fosstodon.org/tags/D3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>D3</span></a> <a href="https://fosstodon.org/tags/Python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Python</span></a></p>
Nicola Rennie<p>It's the last day of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a>, and the final prompt is "National Geographic Theme" so here's my first and only map created for the challenge!</p><p>📊 Made with <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a><br>🎨 Colours inspired by National Geographic logo<br>📦 {ggpattern} to use striped areas for missing data</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/Day30" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day30</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a></p>
Nicola Rennie<p>It's almost the end of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> and for the prompt of "Extraterrestrial", I decided to make a chart designed in the style of an extraterrestrial who has never heard of good data visualisation principles! 📊 </p><p>How many chart crimes can you spot? 🕵️♂️ </p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a> <a href="https://fosstodon.org/tags/Day29" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day29</span></a></p>
Nicola Rennie<p>A very loose interpretation of the "Inclusion" prompt for Day 28 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a>, by "including" two charts in one!</p><p>💻 Data prep with <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a><br>📊 Waffle plot made with D3<br>🔤 Icons from Font Awesome</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/Day28" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day28</span></a> <a href="https://fosstodon.org/tags/D3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>D3</span></a></p>
Nicola Rennie<p>Another <a href="https://fosstodon.org/tags/Quarto" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Quarto</span></a> + <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> + Observable combination for Day 27 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a>📊 </p><p>Two heatmaps to illustrate the prompt of "Noise" - unsorted heatmaps look like random noise, (sensibly) sorted heatmaps are more likely to reveal patterns!</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/Day27" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day27</span></a> <a href="https://fosstodon.org/tags/ObservableJS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ObservableJS</span></a></p>
Tan G.<p><a class="hashtag" href="https://bsky.app/search?q=%2330DayChartChallenge" rel="nofollow noopener noreferrer" target="_blank">#30DayChartChallenge</a> - Day 20: Urbanization
UN Habitat data across global regions showing how green areas per capita has declined since 1990.
<a class="hashtag" href="https://bsky.app/search?q=%23rstats" rel="nofollow noopener noreferrer" target="_blank">#rstats</a> <a class="hashtag" href="https://bsky.app/search?q=%23dataviz" rel="nofollow noopener noreferrer" target="_blank">#dataviz</a></p>
Nicola Rennie<p>Catching up on Day 24 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> where the prompt is using data from the World Health Organization 🧑⚕️ </p><p>📊 Tried an experimental way to visualise two variables, where lower values are better for both<br>✅ Area shrinking towards zero indicates improvement<br>🤔 Think this would work better if there's a more natural scaling between two variables</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/D3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>D3</span></a> <a href="https://fosstodon.org/tags/Day24" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day24</span></a></p>
Nicola Rennie<p>For the "Monochrome" prompt on Day 26 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a>, I decided to do a little bit of data art in D3! 📊 </p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/Day26" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day26</span></a> <a href="https://fosstodon.org/tags/D3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>D3</span></a></p>
Nicola Rennie<p>For the "Risk" prompt on Day 25 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> I decided to create something using a 'risky' chart type - a pie chart! 📊 </p><p>(Actually not just one, but many, many pie charts!)</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/Day25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day25</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a></p>
Marie Jamet<p>Day 21 - Stars<br><a href="https://piaille.fr/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a></p><p>Coding in Matplotlib a chart done in Flourish some time ago for this article </p><p><a href="https://fr.euronews.com/culture/2023/10/20/festival-lumiere-la-parite-rattrape-un-retard-immense-dans-les-festivals-de-cinema" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">fr.euronews.com/culture/2023/1</span><span class="invisible">0/20/festival-lumiere-la-parite-rattrape-un-retard-immense-dans-les-festivals-de-cinema</span></a></p><p>Looking at the major cinema festivals and the number of times when they gave the main award to a woman... Long way to go still...</p><p><a href="https://piaille.fr/tags/datavis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>datavis</span></a></p>
Nicola Rennie<p>For Day 23 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a>, the prompt is "Log scale" 📊 </p><p>(Technically, this isn't actually a log scale but I wanted to play around with the idea of giving the more recent, more densely located data points more space)</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/Day23" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day23</span></a></p>
Nicola Rennie<p>I'm almost back on track with the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> with another trio of plots - this time all made from scratch in D3! </p><p>I learned how to:<br>📊 Make scatter plots, line charts, and area charts<br>💡 Highlight and annotate specific data points<br>📈 Fit Loess curves in D3</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/Day18" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day18</span></a> <a href="https://fosstodon.org/tags/Day19" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day19</span></a> <a href="https://fosstodon.org/tags/Day21" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day21</span></a> <a href="https://fosstodon.org/tags/D3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>D3</span></a></p>
Nicola Rennie<p>For Day 22 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> and the prompt of "Stars", I found it quite tricky to make the income inequality data I've been working with fit the prompt. </p><p>🎯 Is it a radar chart?<br>⭐ Is it a star?<br>🌌 Is it a constellation?</p><p>I don't know whether I love it or hate it , but either way it's made with <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a>! For reference, the inner 'stars' represent 1%.</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a> <a href="https://fosstodon.org/tags/Day22" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day22</span></a></p>
Marie Jamet<p>📊 Day 21 - Fossils (time series)<br><a href="https://piaille.fr/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a></p><p>Focusing on one type of fossil fuel (natural gas) and looking at its price overtime </p><p><a href="https://piaille.fr/tags/datavis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>datavis</span></a><br><a href="https://piaille.fr/tags/matplotlib" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>matplotlib</span></a></p>
Marie Jamet<p>📊 Day 20 - Urbanisation (time series)<br><a href="https://piaille.fr/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a></p><p>Lacking time, I keep my focus on coding fluency more than data interest or design exuberance</p><p><a href="https://piaille.fr/tags/datavis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>datavis</span></a> <a href="https://piaille.fr/tags/matplotlib" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>matplotlib</span></a></p>
Nicola Rennie<p>A trio of plots for day 12, 13, and 14 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> - for the prompts of Data.gov data, clusters, and kinship!</p><p>📊 All made with the same <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a> theme to save time<br>✍️ Making use of highlighting and annotations<br>📈 Different layouts using facets</p><p><a href="https://fosstodon.org/tags/Day12" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day12</span></a> <a href="https://fosstodon.org/tags/Day13" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day13</span></a> <a href="https://fosstodon.org/tags/Day" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day</span></a> 14 <a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a></p>
Nicola Rennie<p>For Day 20 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> 📊 and the prompt of "Urbanization", I used <a href="https://fosstodon.org/tags/Python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Python</span></a> to make a very abstract plot in the style of a city skyline silhouette! 🐍</p><p>(Still using the income inequality data via Our World in Data)</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/Day20" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day20</span></a></p>
Nicola Rennie<p>Catching up on Day 16 of the <a href="https://fosstodon.org/tags/30DayChartChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>30DayChartChallenge</span></a> with the prompt of "Negative"! 📊 </p><p>💧 Waterfall chart made in <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RStats</span></a><br>📉 Doesn't feel as intuitive when decreases are a positive outcome<br>🛠️ Needed a few hacky approaches to get the right layout</p><p><a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DataViz</span></a> <a href="https://fosstodon.org/tags/ggplot2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ggplot2</span></a> <a href="https://fosstodon.org/tags/Day16" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Day16</span></a></p>
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