Geo Map Chart
Display data on a geographic map with color-coded regions. Supports pan, zoom, tooltips, and custom color scales.
Installation
dotnet add package Lumeo.Charts
One-time app setup (AddLumeo(), CSS & JS) is covered in the
installation guide.
Usage
@using Lumeo <GeoMapChart />
Loading world map data...
Shape-aware skeleton with reserved space for legend and axes — no layout shift when real data arrives.
API Reference
GeoMapChart
| Property | Type | Default | Description |
|---|---|---|---|
| MapName | string | "world" | Name to register the map under in ECharts. |
| MapJson | string? | null | GeoJSON string for the map geometry. Required. |
| Data | object? | null | List of objects with Name and Value for each region. |
| VisualMapMin | double | 0 | Minimum value for the color scale. |
| VisualMapMax | double | 100 | Maximum value for the color scale. |
| Roam | bool | true | Enable pan and zoom interaction on the map. |
| Colors | List<string>? | Blue gradient | Color range for the visual map (low to high). |
| IsLoading | bool | false | When true, renders a shape-matched loading skeleton in place of the chart. Bind to your async fetch state. |
| ShowLoadingSkeleton | bool | true | Set to false to opt out of the skeleton (chart area stays empty while IsLoading is true). |
| SkeletonKind | ChartSkeletonKind | (chart default) | Override the skeleton silhouette (Bars, Line, Area, Pie, Scatter, Grid, Generic). |
| SkeletonStyle | ChartSkeletonStyle | Phantom | Phantom renders the real chart with placeholder data and morphs to real data via ECharts animation. Silhouette falls back to the legacy SVG skeleton overlay. |
| ShowLoadingLabel | bool | true | Shows a small "Loading…" pill in the top-right corner whenever IsLoading is true. Layered on top of any SkeletonStyle. Set to false for bare visuals. (rc.18) |
| LoadingText | string? | "Loading…" | Label rendered next to the spinner inside the loading pill. Set to empty to show the spinner alone. (rc.18) |
| Width | string | "100%" | Chart container width as a CSS length. |
| Height | string | "350px" | Chart container height as a CSS length. |
| Theme | string? | null | ECharts theme name applied to this chart instance. |
| ColorPalette | List<string>? | null | Named palette used to seed region colors. |
| ShowTooltip | bool | true | Shows or hides hover tooltips on map regions. |
| ShowDataLabels | bool | false | Show value labels on map regions. |
| LabelPosition | string | "inside" | Position of data labels relative to each region. |
| LabelFormat | string? | null | ECharts label formatter template string. |
| DataZoom | bool | false | Enable scroll and drag zoom controls. |
| Toolbox | bool | false | Show ECharts toolbox with save, restore, and zoom utilities. |
| AnimationDuration | int? | null | Animation length in milliseconds when rendering. |
| AnimationEasing | string? | null | ECharts easing function name applied to animations. |
| PhantomCycleMs | int | 1400 | Phantom-mode refresh interval in milliseconds while loading. |