{"version":"1.0","type":"rich","title":"Black hat multiline chart","description":"This example displays daily COVID-19 cases for five Scandinavian countries throughout October 2020 on a logarithmic scale. The black-background chart uses colored lines for Sweden, Denmark, Norway, Finland, and Iceland. The visualization loads CSV data via `d3.csv`, builds scales with `scaleLinear` and `scaleLog`, and renders paths with the `d3.line` generator. SVG elements handle axes, labels, a title, and a legend, demonstrating D3 v7's data-joining and axis APIs.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d05986557e75447a9b2949640e790b46?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}