{"version":"1.0","type":"rich","title":"D3: Unit Bar Chart with Brush and Zoom","description":"A unit bar chart displays messages sent over time as a scatterplot of individual circles. The main chart area supports zooming and panning via the d3.zoom behavior, while a smaller context chart below includes a d3.brushX brush to select date ranges and update the focus view. Data is loaded from a CSV file containing message timestamps and daily message counts, rendered as semi-transparent orange circles on time-scaled axes. A summary statistic shows the total number of messages within the currently visible domain, and the brush-and-zoom linkage allows interactive exploration of the temporal distribution.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-be196370ebd19609ca39a9fbd72f77ba?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}