I would have to say by far I liked the Google Charts the best. I made a pie chart for attendance of SXSW 2013 broken down by events. At first I calculated all the percentages, but then I realized it does it for you! And their math is correct. I checked LOL. It is easy to change the title and variables and creates a legend for you, which is nice. Also, it wasn’t complicated to grab the code online, and it links to online JavaScript API, which is easier for me than having to juggle all those files. You can check out my Google Chart on my website.
My second favorite charting tool was HighCharts. It was great to be able to edit in the JSFiddle, so it’s quick to see your edits right after you make them. It was a little difficult transferring the code into a TextWrangler document, but the tutorial quickly helped my rectify the piece of script code I was missing. For HighCharts, I made a line graph showing the breakdowns of economic impact of the creative sectors in Austin in 2010. The HighCharts line graph is also on my website.
My least favorite by far was the Chart.js bar chart I made. It showed jobs in Austin in the creative sectors in 2005 versus 2010. Juggling all those files from the zip was a hassle. It was hard to add a title, hard to make a legend, just plain hard to make it do anything. I’m positive there are easier ways to make something as simple as a bar chart. Although, the animation on the chart looked good, and it’s user friendly to show the exact data upon mouseover.