share/collection.js: Keep visibility when redrawing graphs.

diff --git a/share/collection.js b/share/collection.js
index 57bd04d..141acbd 100644 (file)
--- a/share/collection.js
+++ b/share/collection.js
@@ -399,7 +399,10 @@ function inst_redraw (inst, def, data_list) /* {{{ */
   }
 
   for (i = inst.chart.series.length - 1; i >= 0; i--)
+  {
+    series_array[i].visible = inst.chart.series[i].visible;
     inst.chart.series[i].remove (/* redraw = */ false);
+  }
 
   for (i = 0; i < series_array.length; i++)
     inst.chart.addSeries (series_array[i], /* redraw = */ false);