How can I get Google Charts to display multiple colors in a scatter chart?

Question

I would like to display multiple colors (and potentially shapes and sizes) of data points in a Google Chart scatter chart. Does anyone have an example of how to do so?

Thanks,

Kent Beck

Answer 1

You can only use one dataset in a scatter plot, thus only one color.

http://code.google.com/apis/chart/#scatter_plot

From the API description:

Scatter plots use multiple data sets differently than other chart types. You can only show one data set in a scatter plot.

Answer 2

You could effectively fake a multi-color scatter plot by using a line plot with white lines and colored shape markers at the points you want to display.

Answer 3

I answered my own question after waiting SECONDS for an answer here :-)

You can indeed have different colors for different data elements. For example:

http://chart.apis.google.com/chart?chs=300x200&cht=s&chd=t:1,2,3|6,5,4&chds=1,3,0,10&chxt=x,y&chxl=0:|0|1|2|1:|0|10&chm=d,ff0000,0,0,8,0|a,ff8080,0,1,42,0|c,ffff00,0,2,16,0

It's the chm= that does the magic. I was trying to have multiple chm= statements. You need to have just one, but with multiple descriptions separated by vertical bars.

Answer 4

Here's another example: twitter charts. I'm hoping to do the same thing. Need to find out how to do the concentric circles.