Panning vertical line on a track chart

Chart for saved tracks.

You can only pan the chart when it is enlarged.

It would be great to be able to DRAG the vertical line of the selected point on the map.

On the lower half of the chart you could drag/pan the chart just like now. But on the upper half of the screen you could drag your finger and with that movement you could drag the vertical line that highlights the selected point on the chart. This way you wouldn’t have to press, and press, and press, and press again to precisely select the point you want; and/or to see altitude or speed data for several consecutive points on the track.