With charts sampler there is the option to move axis to top/bottom/left/right. If you move x axis to left or right (keep y at left or right) the data all collapses to the left. If you move y axis (keep x top or bottom) to top or bottom the chart data collapses to the top. If you swap the positions, ie move x to left and y to bottom the chart is cleared. Either this should work or for X axis only top/bottom available and for y axis only left right.