http://www.quietlyscheming.com/blog/charts/easy-custom-charts/
--- In flexcoders@yahoogroups.com, "nasawebguy" <[EMAIL PROTECTED]> wrote: > > cool. thanks. > didn't find the data canvas? But Ely has some > very cool charting samples here > http://demo.quietlyscheming.com/ChartSampler/app.html > He has a mouse handling example that shows how to convert mouse > location to data. Looks like what I need to learn, then learn the drag > drop side. But, I'm on a short deadline, so this feature will have to > come later. I was hoping charts supported datapoint drag/drop natively. > > Thanks for the help Simon. and thanks Ely for the wealth of charting > examples! > > Don > > > > > --- In flexcoders@yahoogroups.com, "simonjpalmer" <simonjpalmer@> > wrote: > > > > Look at CartesianChart dataToLocal and localToData they convert from a > > pixel point to a data point and vice versa. > > > > If you want to get really clever then Ely Greenfield had a data canvas > > on his quietlyscheming blog. > > > > --- In flexcoders@yahoogroups.com, "nasawebguy" <dkerr@> wrote: > > > > > > Thank you. > > > > > > How do you covert the "where dropped" coordinates to data coordinates? > > > > > > I assume by where dropped, you mean x,y coordinates within the chart. > > > > > > and by data coordinates, you mean x,y data in my dataProvider. > > > > > > I guess I need to dig in and understand drop coordinates in the chart. > > > > > > Drag n' Drop is well documented generically, but after a day of > > > searching, I found no documentation on drag n' drop within a chart > > > using chart data. > > > > > > I appreciate your help. > > > Don > > > > > > > > > --- In flexcoders@yahoogroups.com, "simonjpalmer" <simonjpalmer@> > > > wrote: > > > > > > > > yes. > > > > > > > > Write yourself a custom renderer for the data points in your chart > > > > which traps the start of the drag. Add drag and drop handlers > to your > > > > chart. On drop inspect what is being dropped and where the drop > > > > happened, convert into data coordinates, update the data accordingly > > > > and refresh your chart. > > > > > > > > All the drag drop stuff is very well documented. Converting from > > > > screen to data is possible on your chart via several mechanisms. > Data > > > > binding should take care of refreshing your chart. > > > > > > > > hth > > > > Simon > > > > > > > > --- In flexcoders@yahoogroups.com, "nasawebguy" <dkerr@> wrote: > > > > > > > > > > Can you drag n' drop OR "move" a data point from one place to > > another > > > > > inside a chart and have it update the chart and dataprovider? > > > > > > > > > > For example, if my x-axis is date, and a datapoint sits at > 1/9/2008, > > > > > and the user moves that datapoint to 2/9/2009, the > > chart/dataProvider > > > > > would update the new date for the selectedItem? > > > > > > > > > > Thanks, > > > > > Don > > > > > > > > > > > > > > >
