Method map

src/main/java/trace/video/SimpleAnalysis.kt:19–21

    }

    fun map(x: java.util.function.Function<List<Float>, Number?>): List<Int> {
        return data.mapIndexed { i, d -> i to x.apply(d) }.filter { it.second != null }.sortedBy { it.second!!.toDouble() }.map { it.first }
    }
}