The GeoChart allows you to chart up to two numerical values per data point in markers mode (one determines the color of the point, one determines the size of the point). If you want to add additional data (like dates), you have to add them in to the formatted value of the one of the other columns.
Example with the dates added to the locations: http://jsfiddle.net/asgallant/rHqa2/ Example with the dates replacing the "size" value: http://jsfiddle.net/asgallant/rHqa2/1/ On Thursday, November 21, 2013 9:34:29 AM UTC-5, Don Doyle wrote: > > I am a historian and a complete novice to this realm. I want a Geo Chart > or Map that will show the global dispersion of letters of condolence > following Abraham Lincoln's death in 1865. > My data include: > country, city, date, type of group, and I may want to add some kind of > content variable indicating political sentiment > I want the map to show a marker, a small round dot, for each of about 500 > letters from all part of the world. > I see the GeoChart template with markers indicating variables for > countries. > How do I use city level data tp visualize the dispersion of these > letters? > Many thanks for whatever help you can provide. > --Don > -- 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.
