The charts only have 31 colors to work with (proof, side-by-side demo of 62
data series, the first 31 on the left, the second 31 on the right:
http://jsfiddle.net/asgallant/LWLnr/). Colors repeat after 31 series.
On Wednesday, May 21, 2014 2:17:17 PM UTC-4, cyb wrote:
>
> Hi,
>
> but this are only 31 colors, what is if i have a chart with 40 or 50
> columns ?
>
> how did the google framework generate the colors ? there must be a method
> that generates the colors. have i access to this code ?
>
> the best case is, if i have a function that genereates me every time the
> same default google colors.
>
> for example, if i have a chart with 30 columns the function should
> generate 30 colors but it must be every time the same colors...
>
>
>
> Best regards
>
> Am Montag, 5. Mai 2014 18:11:24 UTC+2 schrieb cyb:
>>
>> Hi,
>>
>> i use a chartWrapper to display different charts (Line,Colum,Area,Pie and
>> so on) and i can filter dates and numbers without any problem but if i
>> switch to discrete mode then the filtering did no longer work..
>>
>> i build the filter view for my DataWrapper like this:
>>
>> Data:
>>
>>> date,New York,San Francisco,Austin,Country
>>> 20111001,10,20,30,A
>>> 20111002,40,50,60,B
>>> 20111003,70,80,90,C
>>> 20111004,100,110,120,D
>>
>>
>> var dataTable=new google.visualization.DataTable(DATA);
>>> var filteredView ={columns : 1,2,3, rows :
>>> dataTable.getFilteredRows([{column:1, minValue: 40, maxValue: 70}])};
>>
>>
>> For example i want filter on the xAxis (New York) all values between 40
>> and 70.. this works if i have no discrete mode..
>>
>> but if i change the Column "New York" from type number to string (is this
>> the only method to activate the discrete mode? or is there an option where
>> i must not change the type ? ) the filtering did not work. I do the
>> switching to discrete mode like that:
>>
>> var View =[
>>> {
>>> type: 'string',
>>> label: dataTable.getColumnLabel(1),
>>> calc: function (dt, row) {
>>> return dt.getFormattedValue(row, 1);
>>> }
>>> }
>>> ];
>>> View .push.apply(View ,[2,3]); //Adds the values
>>> from a second array to the first array
>>> var newView={columns: View }; /
>>
>>
>>
>>
>> i have the same problem with the PieChart, there is per default the first
>> column a string so i can not do any filtering.
>>
>> how can i solve this problem ?
>>
>
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