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Position

Scott Hunter edited this page May 16, 2019 · 13 revisions

This page describes the possible content of a CZML document or stream. Please read CZML Structure for an explanation of how a CZML document is put together.

Position

Defines a position. The position can optionally vary over time.

Extends: InterpolatableProperty

Interpolatable: yes

Properties

referenceFrame - string

The reference frame in which cartesian positions are specified. Possible values are "FIXED" and "INERTIAL".

Default: FIXED

cartesian - Cartesian3Value

The position specified as a three-dimensional Cartesian value, [X, Y, Z], in meters relative to the referenceFrame.

cartographicRadians - CartographicValue

The position specified in Cartographic WGS84 coordinates, [Longitude, Latitude, Height], where Longitude and Latitude are in radians and Height is in meters.

Examples:

{
    "position": {
        "cartographicRadians": [ -1.3439035240356338, 0.6457718232379019, 100000 ]
    }
}

cartographicDegrees - CartographicValue

The position specified in Cartographic WGS84 coordinates, [Longitude, Latitude, Height], where Longitude and Latitude are in degrees and Height is in meters.

Examples:

{
    "position": {
        "cartographicDegrees": [ -77, 37, 100000 ]
    }
}

cartesianVelocity - Cartesian3VelocityValue

The position and velocity specified as a three-dimensional Cartesian value and its derivative, [X, Y, Z, dX, dY, dZ], in meters relative to the referenceFrame.

reference - ReferenceValue

The position specified as a reference to another property.

delete - boolean

Whether the client should delete existing samples or interval data for this property. Data will be deleted for the containing interval, or if there is no containing interval, then all data. If true, all other properties in this property will be ignored.

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