openeo-processes/arccos.json at master · Open-EO/openeo-processes · GitHub

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{
    "id": "arccos",
    "summary": "Inverse cosine",
    "description": "Computes the arc cosine of `x`. The arc cosine is the inverse function of the cosine so that *`arccos(cos(x)) = x`*.\n\nWorks on radians only.\nNo-data values are passed through. `NaN` is returned for values < -1 and > 1.",
    "categories": [
        "math > trigonometric"
    ],
    "parameters": [
        {
            "name": "x",
            "description": "A number in the range *[-1, 1]*.",
            "schema": {
                "type": [
                    "number",
                    "null"
                ],
                "minimum": -1,
                "maximum": 1
            }
        }
    ],
    "returns": {
        "description": "The computed angle in radians in the range *[0, π]*.",
        "schema": {
            "type": [
                "number",
                "null"
            ],
            "minimum": 0
        }
    },
    "examples": [
        {
            "arguments": {
                "x": 1
            },
            "returns": 0
        }
    ],
    "links": [
        {
            "rel": "about",
            "href": "http://mathworld.wolfram.com/InverseCosine.html",
            "title": "Inverse cosine explained by Wolfram MathWorld"
        }
    ]
}