              |&gt; <span class="hljs-type">List</span>.transpose
                |&gt; <span class="hljs-type">List</span>.map (<span class="hljs-type">List</span>.map (\( y1, y2 ) -&gt; ( <span class="hljs-type">Scale</span>.convert xScale y1, <span class="hljs-type">Scale</span>.convert xScale y2 )))

        xScale : <span class="hljs-type">ContinuousScale</span> <span class="hljs-type">Float</span>
        xScale =
            <span class="hljs-type">Scale</span>.linear ( w - padding, padding ) extent
