I created stock exchange graphic on rad chart. It worked perfectly.
But, I had two problems.
1. I want to show on my chart, previously closed value that is single line parallel to x axis and different color. (can I add manual YAxis minor gridline ?)
2. And if possible, I want to add extra label in chart title to show stock exchange value positif or negative. (red or green color)
Like that http://www.six-swiss-exchange.com/