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.
Charts and graphs are probably the most common types of arbitrary graphics (Winn, 1987). Charts refer to tables or information contained in table-like formats. Examples include taxonomies, such as the classification of animal groups, language families, or baseball teams (such as shown in Figure 2.4).