Incorrect use of latitude/longitude in README?

[rtcpw]

The example in README.md:

// Map to library's MapPoint<'a>
    let points : MapPoint<_VisibleChargingPoint_> [] =
        filtered
        |> Array.map (fun m -> { X = m.Lat; Y = m.Long; Data = m })

It shows X = Latitude and Y = Longitude. Shouldn't these be the other way around? Longitude are "vertical lines" so I think those are more akin to "X", while latitude are "horizontal lines" and hence "Y"?

https://en.wikipedia.org/wiki/Longitude