Fix heatmaps ignoring ColorLimits

Author: robertoffmoura

plotly/Test_plotlyfig.m

@@ -1145,6 +1145,8 @@ function testHeatmapData(tc)
                 x = {num2cell(num2str((1:5)'))}, ...
                 y = {num2cell(num2str(flip(1:5)'))}, ...
                 z = flip(data), ...
+                zmin = min(data,[],"all"), ...
+                zmax = max(data,[],"all"), ...
                 connectgaps = false, ...
                 hoverongaps = false, ...
                 hoverinfo = "text", ...
@@ -1173,6 +1175,20 @@ function testHeatmapData(tc)
             ), AbsTol=1e-15);
         end
 
+        function testHeatmapDataColorLimitsOverride(tc)
+            fig = figure("Visible","off");
+            data = magic(5);
+            zmin = -5;
+            zmax = 5;
+            h = heatmap(data);
+            h.ColorLimits = [zmin, zmax];
+
+            p = plotlyfig(fig,"visible","off");
+
+            tc.verifyEqual(p.data{1}.zmin, zmin);
+            tc.verifyEqual(p.data{1}.zmax, zmax);
+        end
+
         function testErrorbarData(tc)
             fig = figure("Visible","off");
             x = 1:10;
@@ -2470,6 +2486,8 @@ function testTiledLayoutHeatmap(tc)
                 x = {num2cell(num2str((1:2)'))}, ...
                 y = {num2cell(num2str(flip(1:2)'))}, ...
                 z = flip(data), ...
+                zmin = min(data,[],"all"), ...
+                zmax = max(data,[],"all"), ...
                 connectgaps = false, ...
                 hoverongaps = false, ...
                 hoverinfo = "text", ...

plotly/plotlyfig_aux/handlegraphics/updateHeatmap.m

@@ -14,6 +14,8 @@
     data.x = heat_data.XDisplayData;
     data.y = heat_data.YDisplayData(end:-1:1, :);
     data.z = cdata;
+    data.zmin = heat_data.ColorLimits(1);
+    data.zmax = heat_data.ColorLimits(2);
     data.connectgaps = false;
     data.hoverongaps = false;