generate_bar_chart

Create bar charts to visualize numerical comparisons across categories. Customize axes, group or stack data, and export as PNG, SVG, or ECharts options for clear insights into horizontal data trends.

Instructions

Generate a bar chart to show data for numerical comparisons among different categories, such as, comparing categorical data and for horizontal comparisons.

Input Schema

Name	Required	Description	Default
`axisXTitle`	No	Set the x-axis title of chart.
`axisYTitle`	No	Set the y-axis title of chart.
`data`	Yes	Data for bar chart, such as, [{ category: 'Category A', value: 10 }, { category: 'Category B', value: 20 }] or [{ category: 'Category A', value: 10, group: 'Group A' }].
`group`	No	Whether grouping is enabled. When enabled, bar charts require a 'group' field in the data. When `group` is true, `stack` should be false.
`height`	No	Set the height of the chart, default is 600px.
`outputType`	No	The output type of the diagram. Can be 'png', 'svg' or 'option'. Default is 'png', 'png' will return the rendered PNG image, 'svg' will return the rendered SVG string, and 'option' will return the valid ECharts option.	png
`stack`	No	Whether stacking is enabled. When enabled, bar charts require a 'group' field in the data. When `stack` is true, `group` should be false.
`theme`	No	Set the theme for the chart, optional, default is 'default'.	default
`title`	No	Set the title of the chart.
`width`	No	Set the width of the chart, default is 800px.

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "axisXTitle": {
      "default": "",
      "description": "Set the x-axis title of chart.",
      "type": "string"
    },
    "axisYTitle": {
      "default": "",
      "description": "Set the y-axis title of chart.",
      "type": "string"
    },
    "data": {
      "description": "Data for bar chart, such as, [{ category: 'Category A', value: 10 }, { category: 'Category B', value: 20 }] or [{ category: 'Category A', value: 10, group: 'Group A' }].",
      "items": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category of the data point, such as 'Category A'.",
            "type": "string"
          },
          "group": {
            "description": "Group name for multiple series, used for grouping or stacking",
            "type": "string"
          },
          "value": {
            "description": "Value of the data point, such as 10.",
            "type": "number"
          }
        },
        "required": [
          "category",
          "value"
        ],
        "type": "object"
      },
      "minItems": 1,
      "type": "array"
    },
    "group": {
      "default": false,
      "description": "Whether grouping is enabled. When enabled, bar charts require a 'group' field in the data. When `group` is true, `stack` should be false.",
      "type": "boolean"
    },
    "height": {
      "default": 600,
      "description": "Set the height of the chart, default is 600px.",
      "exclusiveMinimum": 0,
      "type": "integer"
    },
    "outputType": {
      "default": "png",
      "description": "The output type of the diagram. Can be 'png', 'svg' or 'option'. Default is 'png', 'png' will return the rendered PNG image, 'svg' will return the rendered SVG string, and 'option' will return the valid ECharts option.",
      "enum": [
        "png",
        "svg",
        "option"
      ],
      "type": "string"
    },
    "stack": {
      "default": false,
      "description": "Whether stacking is enabled. When enabled, bar charts require a 'group' field in the data. When `stack` is true, `group` should be false.",
      "type": "boolean"
    },
    "theme": {
      "default": "default",
      "description": "Set the theme for the chart, optional, default is 'default'.",
      "enum": [
        "default",
        "dark"
      ],
      "type": "string"
    },
    "title": {
      "description": "Set the title of the chart.",
      "type": "string"
    },
    "width": {
      "default": 800,
      "description": "Set the width of the chart, default is 800px.",
      "exclusiveMinimum": 0,
      "type": "integer"
    }
  },
  "required": [
    "data"
  ],
  "type": "object"
}

MCP ECharts

generate_bar_chart

Instructions

Input Schema

Input Schema (JSON Schema)

Other Tools from MCP ECharts

Related Tools

MCP directory API