As the title says `listOf(1.0, 2.0).toDataFrame()` gives an empty dataframe. The overloads for `Float?` and `Double?` are missing here: https://github.com/Kotlin/dataframe/blob/master/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt This is a critical miss.