> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Download material property data as JSON

> Return the property dataset as a JSON object mapping column name to value array.

Supports optional downsampling (``max_points``) and x-range filtering
(``x_col`` + ``x_min`` + ``x_max``) for dynamic chart zoom resolution.

Example response::

    {
        "c_e": [0.5, 1.0, 1.5, 2.0],
        "kappa": [0.42, 0.71, 0.89, 0.95],
        "diffusivity": [3.2e-10, 2.8e-10, 2.3e-10, 1.9e-10]
    }



## OpenAPI

````yaml https://api.ionworks.com/openapi.json get /material_property_datasets/{property_id}/data
openapi: 3.1.0
info:
  title: FastAPI
  version: 0.1.0
servers:
  - url: https://api.ionworks.com
    description: Production
security: []
paths:
  /material_property_datasets/{property_id}/data:
    get:
      tags:
        - Material Property Datasets
      summary: Download material property data as JSON
      description: >-
        Return the property dataset as a JSON object mapping column name to
        value array.


        Supports optional downsampling (``max_points``) and x-range filtering

        (``x_col`` + ``x_min`` + ``x_max``) for dynamic chart zoom resolution.


        Example response::

            {
                "c_e": [0.5, 1.0, 1.5, 2.0],
                "kappa": [0.42, 0.71, 0.89, 0.95],
                "diffusivity": [3.2e-10, 2.8e-10, 2.3e-10, 1.9e-10]
            }
      operationId: >-
        get_material_property_data_material_property_datasets__property_id__data_get
      parameters:
        - name: property_id
          in: path
          required: true
          schema:
            type: string
            title: Property Id
        - name: max_points
          in: query
          required: false
          schema:
            anyOf:
              - type: integer
                minimum: 1
              - type: 'null'
            description: Downsample to at most this many points
            title: Max Points
          description: Downsample to at most this many points
        - name: x_col
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            description: Column to filter by x range
            title: X Col
          description: Column to filter by x range
        - name: x_min
          in: query
          required: false
          schema:
            anyOf:
              - type: number
              - type: 'null'
            description: Minimum x value (inclusive)
            title: X Min
          description: Minimum x value (inclusive)
        - name: x_max
          in: query
          required: false
          schema:
            anyOf:
              - type: number
              - type: 'null'
            description: Maximum x value (inclusive)
            title: X Max
          description: Maximum x value (inclusive)
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError

````