Why I cannot zoom heatmap?
From Array Suite Wiki
Users can use Zoom to explore the heatmap view in more details.
However, if color bar has been applied to either of the 2 axes, zooming is disabled for that axis. In the example below, the color bar has been added to x-axis, so zooming can only be applied to y-axis. If color bars are added to both axes, the heatmap cannot be zoomed.