Selecting a year of a line chart

Selecting a Year on a Line Chart

This line chart shows UN population estimates and projections from 1950 to 2100 for world regions, with a vertical black line marking the currently selected year. Users can hover anywhere on the chart to update the selected year, which is highlighted by the line. The visualization uses D3 v5 with d3.nest() to group data by region, d3.scaleTime() and d3.scaleLinear() for axes, and SVG line paths with a curveBasis interpolation. A color legend and axis labels are also rendered, with data loaded from two CSV files.

Ffbudwill

Selecting a Year on a Line Chart

This interactive line chart displays global population trends by region from 1950 to 2100, using data from United Nations population estimates. A vertical line highlights the currently selected year, and hovering over the chart updates the selection to the nearest year. The visualization builds on d3.csv, d3.nest, d3.scaleTime, d3.scaleLinear, and d3.line for rendering SVG paths, with a custom d3.colorLegend for the categorical color scale. The selected year is stored in a state variable and triggers a re-render on change.

家家兴

Selecting a Year on a Line Chart

This line chart displays global population trends for regions from 1950 to 2100, with a movable vertical line that lets the user select a specific year. The chart highlights population values for that chosen year via circles on each regional line, with a color legend identifying each region. Built with D3 v5, the visualization uses `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` with `curveBasis` to render the SVG chart. Data comes from UN population estimates and medium variant projections, loaded via `csv` and processed through `nest` and `melt` functions. Hover interactions are handled by the `mouse` callback on an invisible rectangle.

FflexKeks

Selecting a Year on a Line Chart

This visualization shows UN population estimates and projections from 1950 to 2100 for world regions as multi-line charts, with a movable vertical line that selects a year. Moving the mouse across the chart updates the selected year, which is rendered as a black vertical line. The chart uses D3 v5 with SVG rendering, employing `d3.line` with `curveBasis` for smooth paths, `d3.nest` to group data by region, and `d3.scaleTime` and `d3.scaleLinear` for axes. A custom color legend maps regions using `d3.scaleOrdinal` with `schemeCategory10`.

Kkbriggs1

Selecting a Year on a Line Chart

This line chart shows population estimates and projections over time for global regions from 1950 to 2100. A vertical black line marks the currently selected year, which changes dynamically as the user moves the mouse across the chart. The visualization uses d3.line with curveBasis for smooth paths, d3.scaleTime and d3.scaleLinear for axes, and d3.mouse to detect hover position, triggering a re-render with the new year. Data comes from UN population estimates and medium-variant projections, rendered as SVG with a categorical color legend.

RRajib Kumar Chanda

Selecting a Year on a Line Chart

This line chart visualizes UN population estimates and projections by region from 1950 to 2100, with a vertical line marking a selected year. A clickable mouse-interceptor rectangle lets users hover to update the selected year via `setSelectedYear`, which re-renders the chart. The visualization uses d3.scaleTime, d3.scaleLinear, d3.line with curveBasis, and d3.nest for grouping, rendering as SVG with an ordinal color scale legend. Data comes from two CSV files loaded with d3.csv, combining estimates and medium-variant projections.

Kkbriggs1

Selecting a year on a line chart

This line chart visualizes population estimates and projections for world regions from 1950 to 2100, using data from the UN Population Estimates and Medium Variant datasets. A vertical line marks the currently selected year, and moving the mouse across the chart updates this selection, with the year recomputed from the mouse position via the x-scale’s inverse mapping. The chart is built with D3 v5, using SVG rendering, scales, axes, and a basis-curve line generator, while a custom legend assigns colors to regions through a categorical ordinal scale.

MMatthiasVanCampen

Selecting a Year on a Line Chart

This line chart visualizes projected global population by region from 1950 to 2100, using UN population estimates and medium-variant projections. A vertical black line marks a selected year, and moving the mouse across the chart updates the selection, re-rendering the visualization. The code uses d3.scaleTime, d3.scaleLinear, d3.line with curveBasis, and d3.nest for grouping, with SVG rendering and a color legend. Data is loaded via d3.csv from two datasets and processed through a custom melt function.

Ggabcoderboi