I'm having trouble getting an accurate legend for charts like the following:
http://chart.apis.google.com/chart?cht=bhs&chs=900x300&chd=t:1,1|1|1|2|1|1|1|1|1|1|2&chtt=Sample+Chart&chts=000000,20&chds=0,13&chco=0000FF|0000FF,007704,E05CE0,CC3333,00CED1,CC3333,00CED1,CC3333,00CED1,FEFE00,00CED1&chxt=x,y&chxl=1:|111|110&chxr=0,0,13,1&chbh=a The Y axis has track number and the X axis has numbers of rail cars on the track. The colors represent groupings of cars by some characteristic and where the color is the same in two or more blocks then those cars all have that same characteristic. I've tried with/without a hidden dataset but all to no avail. It seems that what I need is either to be able to specify a hidden 1st dataset rather than a last dataset or to have a chdlc parameter for specifying legend colors independent of the current method of assigning colors direct from the datasets. Any suggestions?
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