Parkinsonâs Disease (PD) is a chronic, progressive disorder that affects nerve cells deep in the brain responsible for planning and controlling body movement. Dopamine is a chemical used in body movement.
Chart.js is a JavaScript library that allows you to draw different types of charts by using the HTML5 canvas element. Since it uses canvas, you have to include a polyfill to support older browsers. The one suggested by the author is ExplorerCanvas, so you may want to stick with it.
In Jyotish, the main item is your chart. It's a map of the planets in the signs of the zodiac. Charts are cast based on an exact moment at an exact place on earth. Therefore, the moment you were born and the place you were born has a chart, and that is your birth chart or  natal chart .