Fork of Selecting a Year on a Line Chart

Fork of Selecting a Year on a Line Chart

This interactive line chart displays population trends over time for various world regions, with a vertical line marking a selected year, which users can adjust by moving the mouse across the chart. Using D3 v5, the visualization employs `scaleTime`, `scaleLinear`, and `scaleOrdinal` for scales, `axisBottom` and `axisLeft` for axes, and `line` with `curveBasis` for smooth paths. Data is loaded from UN population estimate CSV files. The SVG rendering updates dynamically through a selection state, and a separate color legend uses `scaleOrdinal` with a category 10 scheme to identify regions.

Jjudeluka

Fork of Selecting a Year on a Line Chart

This interactive line chart displays population trends over time by region, with a movable vertical line and circular markers that highlight the selected year across all series. Users click or drag on the chart to change the selection, updating the visualization in real time. The visualization uses the D3 v5 modules `nest`, `scaleTime`, `scaleLinear`, and `scaleOrdinal` to structure and scale the data, while `axisBottom`, `axisLeft`, and `line` handle axes and path generation. Population data comes from UN estimates (1950–2014) and medium-variant projections (2015–2100), rendered as SVG with semi-transparent strokes.

RRaghureddy4545

Fork of Selecting a Year on a Line Chart

This visualization shows population trends over time for world regions, with a vertical line marking a selected year that updates on mouse movement. Users can compare regional curves colored via an ordinal scale, with the selected year’s position recalculated using d3.scaleTime inversion. The chart is rendered in SVG using d3.line with basis curves, and incorporates a nested data structure from UN population estimates and medium variant projections. A color legend and axis labels supplement the interactive line chart.

Ssandeshplanner

Fork of Selecting a Year on a Line Chart

This interactive line chart displays population trends over time for global regions, with a movable vertical line that lets users select a specific year. Hovering over the chart triggers the `setSelectedYear` function, which updates the selected year and redraws the visualization. The chart uses `d3.line` with `curveBasis` for smooth paths, `d3.scaleTime` and `d3.scaleLinear` for axes, and `d3.nest` to group data by region. A color legend built with `d3.scaleOrdinal` and `schemeCategory10` identifies each line. Population data comes from UN estimates merged with medium variant projections, rendered as SVG.

PPiotr Paszek

Fork of Selecting a Year on a Line Chart

This visualization shows regional population trends over time as multi-line chart, with a vertical line marking the currently selected year. Moving the mouse across the chart updates the selected year, and a legend identifies each region's color. The code uses D3 v5 APIs including `d3.nest`, `d3.scaleOrdinal` with `schemeCategory10`, and `d3.line` with `curveBasis`, while the interactive year selection relies on `d3.mouse` and `scaleTime.invert`. Data comes from UN population estimates and medium variant projections, rendered as SVG elements.

Nnayd

Fork of Selecting a Year on a Line Chart

This interactive line chart visualizes population changes over time for world regions, with a vertical line marking a user-selected year. Clicking or hovering along the chart updates the selected year, repositioning the line to show the population at that moment. The visualization uses d3.nest and d3.scaleOrdinal to group data by region, d3.line with curveBasis to draw smoothed paths, and d3.axisBottom and d3.axisLeft for labeled axes. Data comes from UN population estimates and projections split across two CSV files, loaded via d3.csv.

GGerasimos Katsagannis

Fork of Selecting a Year on a Line Chart

This interactive line chart displays population trends over time by region, using data from UN population estimates. A vertical black line marks the currently selected year, and users can hover over the chart to update this selection, which the visualization updates in real time. The D3 code organizes regions by color using `d3.scaleOrdinal` and `d3.schemeCategory10`, draws the lines with `d3.line` and `d3.curveBasis`, and renders axes with `d3.axisLeft` and `d3.axisBottom`. A custom legend component maps colors to region names, and the data is loaded from CSV files.

Rrajeshathakur

Fork of Selecting a Year on a Line Chart

This interactive line chart displays population estimates by region from 1950 to 2100, sourced from UN population data. Users can hover over the chart to select a specific year, which updates a vertical line marker and re-orders the color-coded legend. The visualization uses d3.scaleTime, d3.scaleLinear, d3.line with curveBasis, d3.nest, and d3.mouse to handle interactions. A color legend built with custom D3 code lists regions using d3.scaleOrdinal and d3.schemeCategory10, while axes and labels are rendered as SVG elements.

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