The error message could be better, but I believe your JSON is malformed.
Take a look at this documentation:
https://developers.google.com/chart/interactive/docs/reference#dataparam
In particular, the items in your cols list should be objects with a few
more properties.
Ditto for the cells in your rows list.
Here's the JSON I got when I created the table manually (minus a few rows)
and ran toJSON on the datatable:
'{
"cols": [{
"id": "",
"label": "Day",
"pattern": "",
"type": "string"
}, {
"id": "",
"label": "Joined",
"pattern": "",
"type": "number"
}, {
"id": "",
"label": "Canceled",
"pattern": "",
"type": "number"
}],
"rows": [{
"c": [{
"v": "29",
"f": null
}, {
"v": 6,
"f": null
}, {
"v": 0,
"f": null
}]
}, {
"c": [{
"v": "30",
"f": null
}, {
"v": 7,
"f": null
}, {
"v": 0,
"f": null
}]
}],
"p": null
}'
On Thu, Feb 28, 2013 at 11:43 PM, <[email protected]> wrote:
> { "cols": ["Day","Joined","Canceled"], "rows":
> [["29",6,0],["30",7,0],["31",8,0],["01",12,1],["02",14,0],["03",18,2],["04",16,0],["05",20,1]]}
>
Thomas Rybka | Software Engineer | [email protected] | Google
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