Neither of those is supported in the API. In theory you could write javascript that modifies the SVG/VML chart code to change the color of the border, but doing so could prove tedious and would not be guaranteed to work in future versions of the API. The second is doable, though, with a bit of hackery. Here's an example that does this: http://jsfiddle.net/asgallant/5SX8w/. Since you have so many data series, it would likely be easier to modify that code to handle an arbitrary number of series rather than change it to do 10.
On Sunday, October 28, 2012 2:19:29 PM UTC-4, Peter Ilfrich wrote: > > Hi, > > So I have a ColumnChart and one of the built-in functionality is that you > can hover over an item in the legend of the chart and you get some > highlight-border around the corresponding columns in the chart. > > Now I have many columns and categories in my chart and a highlighted > series/category is very hard to see, because the default behavior just > shows a 1px gray border around the columns. My columns are only a few > pixels width and I still need to differentiate 10 different categories (=10 > different colors). So picking only very light colors (where the border > would be easy to spot) is no option. I've found no way of changing: > > a) The style of the highlight-border (primarily the color) or > b) The color of the columns (fill color) when their respective category is > selected in the legend. > > Help is highly appreciated! > > Thanks, > Peter > -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-visualization-api/-/UV6ZcP21m1IJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-visualization-api?hl=en.
