CODEWITHSUNDEEP
mapbox-gl-js
Sanctus
Sanctus

Reputation: 273

Mapbox property functions: base value

Checking MapBox Street-v9 style I found strange notation, and I could not verify by saerching SO, docs and manuals exact meaning of it.

    "paint": {
        "background-color": {
            "base": 1,
            "stops": [ [11, "hsl(35, 32%, 91%)"], [13, "hsl(35, 12%, 89%)"]]
        }
    }

Suspicious here for me is "base": 1. I understand, in case of line-width or similar, base 1 means default width of 1.

But here property is not integer, so what does it mean exactly? First stop? Starting from 0 or 1?

P.S. there are more examples of similar usage:

        "line-cap": {
            "base": 1,
            "stops": [ [0, "butt"], [11 "round"] ]
        },

Upvotes: 0

Views: 253

Answers (1)

stdob--
stdob--

Reputation: 29172

base

Optional number. Default is 1.

The exponential base of the interpolation curve. It controls the rate at which the function output increases. Higher values make the output increase more towards the high end of the range. With values close to 1 the output increases linearly.

https://www.mapbox.com/mapbox-gl-js/style-spec/#function-base

Upvotes: 1

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