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Chris Cooning

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Exploring a new dataset? Follow these key steps to make sure you know what the data is, that it contains valid and meaningful data, and that you know what might be missing.

How to explore data: A checklist for navigating datasets 

A closer look at bar charts, why they work better for categorical data than line charts, and why things are a bit more complicated when it comes to time

When to use bar or line charts for time series data

Fil Rivière, Data Visualization Engineer at Observable, describes his path into data visualization, what he likes in a map, what’s hard about mapmaking, and why he’s asking if we need a “slow cartography movement.” 


We can always talk about maps

AgroPatterns uses Observable to map and visualize greenhouse data, helping Colombian farmers optimize crops and reduce chemicals.

Mapping the future of agriculture with AgroPatterns

Bar charts are the workhorses of data visualization, showing numerical data broken down into discrete categories. They can also show counts of items, such as in histograms. This post shows some examples, as well as how to create them in Observable Plot.

The powerful simplicity of bar charts and histograms

Learn how linked brushing can help viewers dig further into interconnected data by highlighting patterns across metrics, zoom in on spatial trends, and focus on time periods of interest. 

Use linked brushing to explore patterns across dimensions, space, and time

Pie and donut charts get a bad rep, but they’re useful for some data and tasks. We look at what they’re good for, as well as the research on how they work, to dispel some of the myths and prejudices against them.

Everything you think you know about pie charts is wrong

Kelsey Nanan transforms complex data into impactful stories through creativity, collaboration, and data driven exploration.

From Urban Science to data storytelling: Inside the work of Kelsey Nanan

A look back at 2024 in 24 insights, from our Insight conference to many amazing data apps built by our community, and a look at our own data

Observable Wrapped: 24 insights from 2024

Jason Forrest, data visualization designer and Editor-in-Chief of Nightingale, shares his thoughts on creating empathetic visualizations that inspire conversations.

Observable blog

How to explore data: A checklist for navigating datasets

How to explore data: A checklist for navigating datasets

When to use bar or line charts for time series data

We can always talk about maps

Mapping the future of agriculture with AgroPatterns

The powerful simplicity of bar charts and histograms

Use linked brushing to explore patterns across dimensions, space, and time

Everything you think you know about pie charts is wrong

From Urban Science to data storytelling: Inside the work of Kelsey Nanan

Observable Wrapped: 24 insights from 2024

Jason Forrest: all data visualization is a dialogue

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