ArcGIS API for JavaScript (legacy) ^3.46

Name of the feature attribute field that contains the angle of rotation. Or a function that returns the angle of rotation.

A function is useful in cases where the angle of rotation is not available in an attribute field but needs to be computed using a mathematical expression or formula. For example, you can specify a function to compute wind or current direction when the underlying data is stored as U or V vectors. View example below.

Defines the origin and direction of rotation depending on how the angle of rotation was measured. Can be one of the following:

• geographic: rotates the symbol from the north in a clockwise direction.
• arithmetic: rotates the symbol from the east in a counter-clockwise direction.

The default value is "geographic".

• expression: (Required) A string value that allows a size to be defined based on the scale. "view.scale" is the only expression currently supported, but is subject to change in future implementations.
• stops: (Required) An array of objects that define the maximum size of the symbol at various values of the expression. Each object in the array has a numeric size property and a numeric value property. If the value calculated from the expression matches the value of a stop, than the size corresponding to that stop is selected.
  For example, if expression is set to "view.scale", the value corresponds to the map's scale. The size represents the maximum symbol size (in pixels) that corresponds to this scale. If the map scale matches the scale value of a stop, the size corresponding to that stop value is used as the maximum symbol size for the features. If the map scale value falls between two stops, the maximum symbol size is interpolated between the sizes of the two stops.
  The minSize and maxSize stop values are usually the same, although it is possible to have different values depending on how minSize is calculated versus the maxSize.
  The sample snippet below illustrates a scenario where the stops are optimized and minSize and maxSize values are different. In this snippet, all the scales smaller than 288895 have a minSize of 16 and maxSize of 80. This could be optimized by removing the first stop from both minSize and maxSize. The scale values would remain identical even after removing the first stop. This could vary depending on how many consecutive stops have the same size.

  {
    "type": "sizeInfo",
  
    "field": "pop2000",
    "minDataValue": 493782,
    "maxDataValue": 33871648,
    "valueUnit": "unknown",
  
    "minSize": {
      "type": "sizeInfo",
      "expression": "view.scale",
      "stops": [
        { "value": 1128,      "size": 16 },
        { "value": 288895,    "size": 16 },
        { "value": 73957191,  "size": 9 },
        { "value": 591657528, "size": 2 }
      ]
    },
  
    "maxSize": {
      "type": "sizeInfo",
      "expression": "view.scale",
      "stops": [
        { "value": 1128,      "size": 80 },
        { "value": 288895,    "size": 80 },
        { "value": 73957191,  "size": 50 },
        { "value": 591657528, "size": 25 }
      ]
    },
  }
  

• type: String value indicating the type of rendering, e.g., "sizeInfo".
• target: String value indicating that the sizeInfo should be applied to the outline of polygons. This value can be "outline" or null.

  "maxSize": {
    "type": "sizeInfo",
    "expression": "view.scale",
    "stops": [
      {"value": 1128, "size": 80},
      {"value": 288895, "size": 80},
      {"value": 73957191, "size": 50},
      {"value": 591657528, "size": 25}
    ]
  }

• expression: (Required) A string value that allows a size to be defined based on the scale. "view.scale" is the only expression currently supported, but is subject to change in future implementations.
• stops: (Required) An array of objects that define the minimum size of the symbol at various values of the expression. Each object in the array has a numeric size property and a numeric value property. If the value calculated from the expression matches the value of a stop, than the size corresponding to that stop is selected.
  For example, if expression is set to "view.scale", the value corresponds to the map's scale. The size represents the minimum symbol size (in pixels) that corresponds to this scale. If the map scale matches the scale value of a stop, the size corresponding to that stop value is used as the minimum symbol size for the features. If the map scale value falls between two stops, the minimum symbol size is interpolated between the sizes of the two stops.
  The minSize and maxSize stop values are usually the same, although it is possible to have different values depending on how minSize is calculated versus the maxSize.
  The sample snippet below illustrates a scenario where the stops are optimized and minSize and maxSize values are different. In this snippet, all the scales smaller than 288895 have a minSize of 16 and maxSize of 80. This could be optimized by removing the first stop from both minSize and maxSize. The scale values would remain identical even after removing the first stop. This could vary depending on how many consecutive stops have the same size.

  {
    "type": "sizeInfo",
  
    "field": "pop2000",
    "minDataValue": 493782,
    "maxDataValue": 33871648,
    "valueUnit": "unknown",
  
    "minSize": {
      "type": "sizeInfo",
      "expression": "view.scale",
      "stops": [
        { "value": 1128,      "size": 16 },
        { "value": 288895,    "size": 16 },
        { "value": 73957191,  "size": 9 },
        { "value": 591657528, "size": 2 }
      ]
    },
  
    "maxSize": {
      "type": "sizeInfo",
      "expression": "view.scale",
      "stops": [
        { "value": 1128,      "size": 80 },
        { "value": 288895,    "size": 80 },
        { "value": 73957191,  "size": 50 },
        { "value": 591657528, "size": 25 }
      ]
    },
  }
  

• type: String value indicating the type of rendering, e.g., "sizeInfo".
• target: String value indicating that the sizeInfo should be applied to the outline of polygons. This value can be "outline" or null.

  "maxSize": {
    "type": "sizeInfo",
    "expression": "view.scale",
    "stops": [
      {"value": 1128, "size": 80},
      {"value": 288895, "size": 80},
      {"value": 73957191, "size": 50},
      {"value": 591657528, "size": 25}
    ]
  }

• size: A numeric value indicating the size of the symbol
• value: A numeric value indicating the value the symbol represents.

var stops = 
 [
   { "value": 1128, "size": 16 },
   { "value": 288895, "size": 16 },
   { "value": 73957191, "size": 9 },
   { "value": 591657528, "size": 2 }
 ]

• radius: Data value represents the radius of a circular feature.
• diameter: Data value represents the diameter of a circular feature.
• area: Data value represents the area of a feature.
• width: Data value represents the width of a line.
• distance: Data value represents the distance from the center line (one half of the width).