@lowdefy/blocks-echarts

Apache ECharts integration for Lowdefy. Provides rich data visualization capabilities.

Overview

ECharts is a powerful charting library supporting:

Line, bar, pie, scatter charts
Heatmaps, treemaps, sunburst
Geographic maps
3D visualizations
Animation and interactivity

Block

Block	Purpose
`EChart`	ECharts visualization

Basic Usage

yaml

- id: salesChart
  type: EChart
  properties:
    height: 400
    option:
      title:
        text: Monthly Sales
      xAxis:
        type: category
        data:
          _request: getMonths
      yAxis:
        type: value
      series:
        - type: bar
          data:
            _request: getSalesData

Key Properties

Property	Purpose
`height`	Chart height (required)
`width`	Chart width (default: 100%)
`option`	ECharts configuration object
`theme`	ECharts theme name

Chart Types

ECharts supports many chart types via series.type:

line - Line chart
bar - Bar chart
pie - Pie chart
scatter - Scatter plot
radar - Radar chart
heatmap - Heatmap
treemap - Treemap
sunburst - Sunburst chart
graph - Network graph
map - Geographic map

Events

yaml

events:
  onClick:
    - id: drillDown
      type: SetState
      params:
        selectedCategory:
          _event: name

Design Decisions

Why ECharts?

Comprehensive chart library
Good performance with large datasets
Rich customization options
Active community

Why Separate Package?

ECharts is large (~800KB minified). Separating it:

Reduces bundle size for apps without charts
Loads on demand