I think you've hit a limitation there. AFAIK, the only lines that can be made transparent are trendlines (like this: https://developers.google.com/chart/interactive/docs/gallery/trendlines#Example4), and there is no option to make them dashed lines.
On Thursday, February 6, 2014 11:46:20 AM UTC-5, Roberto Tremonti wrote: > > Thank you for your reply. > I tried different solution. > One is to attach a line chart with a “certainty” column set to false to > create a dashed line. > > https://developers.google.com/chart/interactive/docs/roles#certaintyrole > > But line opacity can’t be customized. > And certainty doesn’t seem to work well in heterogeneous charts. > > Another solution is to set width line to 0 and data point to 1 to create a > dotted line. > Opacity can be customized for data points. > The problem is that it’s not a real dotted line, because it depends on > quantity of data points in chart. > If you use a animation to zoom in the chart, line points stretch. > > On 06 Feb 2014, at 17:05, asgallant <[email protected] <javascript:>> > wrote: > > You could add a line to the chart for your warning level, and you could > use annotations to label a point on the line. There are a couple of > different tricks you can use to style the line, but I'm not sure off the > top of my head whether you could get a dashed line with 50% opacity. The > label's font, size, and opacity can be specified. > > > -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-visualization-api. For more options, visit https://groups.google.com/groups/opt_out.
