fix(scatter): apply visualMap on large datasets and add house-price example#172
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…xample - Disable ECharts scatter `large` mode when visualMap is enabled so gradient coloring works regardless of point count - Replace-merge series on ChartScatter updates so UI toggle takes effect - Use cross axisPointer for value-mode scatter tooltips - Add house-price-area2.csv example and CI deploy matrix entry
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Summary
Fixes 2D scatter
--visualmapnot applying gradient colors on large datasets (e.g. 16k+ points) and adds a house-price CSV example to CI.Problem
ECharts skips
visualMapwhen scatter series runs inlargemode. Vizb always enabledlarge: trueabove 2,000 points, so--visualmapshowed the gradient control but points stayed a single color.Changes
scatterSeriesLargeOpts()— when visualMap is on, setlarge: false; otherwise keep the performance path (large: true, threshold 2000)ChartScatter.vue—replaceMerge: ['series', 'visualMap']so toggling visualMap in the UI clears stalelarge: trueaxisPointerwhen both axes are value typehouse-price-area2.csv— 16,174-row ECharts house-price demo data07-house-price-area2withscatter:visualmapTesting