Scaling, scrolling, and panning.

UI explained:

• Use Scale X and Scale Y to zoom in the chart. You can scale the chart anisotropically.
• Use Offset X and Offset Y to move the origin of the chart.
• You cannot move the chart outside its boundaries.
  • Example: if both scale factors are 1, you cannot move the origin — you should zoom in first.
• After applying scale/offset to the chart, sliders' positions change to reflect actual values.
• When you zoomed in, you can grab chart with mouse and move around (pan).
  • Warning: can be slow on some browsers.

That's all Folks!