The following issues were fixed in Graph Visualiser:

1) Allow the user to set the row limit and chart line width.
2) Zoom should only be applied to X-axis, not both.
3) On clicking the 'Generate' button, the chart should return to its original zoom level.
4) Negative values are not displayed.

refs #7485

web/pgadmin/static/js/chartjs/index.jsx

@@ -47,7 +47,6 @@ const defaultOptions = {
   elements: {
     line: {
       tension: 0,
-      borderWidth: 2,
       fill: false,
     },
   },
@@ -66,7 +65,6 @@ const defaultOptions = {
       },
     },
     y: {
-      min: 0,
       ticks: {
         callback: function(label) {
           if (Math.floor(label) === label) {