Last month, we released improved accuracy for Vercel Analytics charts —making it easier to visualize trends over time. This initially began as a side project I worked on during Vercel's Design Your Friday program (on the first Friday of every month, we work on a project of our choice). The goal: improving the data visualization of our Analytics charts. Let's dig deep on this new change. Link to heading Before and after Previously, all the data points were visualized by simply connecting them as a line. It’s hard to read the  trend  from that chart because it’s too noisy. And the delta showed a -0.15 decrease which felt wrong. With the improvement I made, it now uses a smooth curve to visualize the trend and measures the delta more accurately. Link to heading The challenge There are two main challenges in the old visualization. It displays  all  data points on the chart and this makes the chart noisy.…