This is a very basic JavaScript question, and it is very easy to ensure
that the variables have values before they are used. E.g.
var a = 123;
var b = 456;
var data = new google.visualization.DataTable();
data.addColumn('string', 'item');
data.addColumn('number', 'value');
data.addRows([
['A', a],
['B', b],
...
So it seems there must be something more to the question. Perhaps you
should give a more complete example of what you are doing.
On Tue, Nov 15, 2016 at 1:40 PM, P-A <[email protected]> wrote:
>
>
> Le lundi 7 septembre 2015 08:16:29 UTC-4, Mario Lopes a écrit :
>>
>> I am trying to create a pie chart where rather than the data being an
>> actual number, it is the name of a variable as I am doing mathematical
>> operations to the raw data from a database.
>>
>> var data = new google.visualization.DataTable();
>> data.addColumn('string', 'item');
>> data.addColumn('number', 'value');
>> data.addRows([
>> ['A', a],
>> ['B', b],
>> ['C', c],
>> ['D', d],
>> ['E', e],
>> ['F', f],
>> ['G', g]
>> ]);
>>
>> The only time that I can display the graph is when a, b, c, d, e, f, and
>> g are actual numerical values. Unfortunately, I have no idea of knowing
>> those values as they are based on the data from the database. Any help is
>> greatly appreciated. Thanks.
>>
>
>
> I have the same problem, if anyone have an anwser !
>
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