calculate_polyline

The calculate_polyline function is used to get a polyline area and/or perimeter.

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svc=render/calculate_polyline&params={"p":[
                                            {
                                                "x":<double>,
                                                "y":<double>
                                            },
                                            ...
                                      ],
                                      "flags":<uint>,
                                      "w":<uint>}

Parameters

Name	Description
p	The array of coordinate points.
x	Longitude.
y	Latitude.
flags	Displaying the flags: 0x1 — show area; 0x2 — show perimeter; 0x3 — show both parameters.
w	Line width, meters.

Returned result

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{
    "area":<double>,      /* area */
    "perimeter":<double>  /* perimeter */
}

Possible error codes:

Code	Description
4	Wrong input parameters.