Hello,
The graphs can't be linked, since they are not axes object.
Here's a dirty approach, there are lots of assumptions, including that all heatmap charts have same X and Y labels. I am not sure if this fits your case, but you get the idea. You have to click on it first so it becomes the CurrentAxes, then use the scroll button to zoom in the charts,
T = readtable('outages.csv');
hFig = uifigure("WindowScrollWheelFcn", @ZoomHeatmap);
hTL = tiledlayout(2, 1, "Parent", hFig)
h1 = heatmap(hTL, T, 'Region','Cause');
nexttile(hTL)
h2 = heatmap(hTL, T, 'Region','Cause');
function ZoomHeatmap(src, event)
% Get layout, assuming only one exists
hLayout = findall(src, "type", "tiledlayout");
hHeatmaps = hLayout.Children;
% Obtain CurrentAxes from UIFigure and use its XLim and YLim property to assign
% to other objects
hCurrHeatmap = src.CurrentAxes;
hIdxFound = eq(hCurrHeatmap, hHeatmaps);
% Update properties
hHeatmaps(~hIdxFound).XLimits = hCurrHeatmap.XLimits;
hHeatmaps(~hIdxFound).YLimits = hCurrHeatmap.YLimits;
end
