1๐
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I think a solution is to specify a value for the y axis anyway.
{
"y": 0,
"x": "2017-12-22 08:59"
}
The resulting dataset is:
[{
"data": [{
"y": 2,
"x": "2017-12-22 08:59"
}, {
"y": 18,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#32AA09",
"label": "7726bj0dhtnmt"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 2,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#CF5A26",
"label": "0ks4u5nywjbdj"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 4,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#DA43AA",
"label": "1mnbsygj75jvx"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 2,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#5200A0",
"label": "39ymdt11ybwhz"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 2,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#925E44",
"label": "4v1whmzv76j2z"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 2,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#477BD4",
"label": "5sfyujuhwbj9n"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 4,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#272755",
"label": "6x0zvf2mw8t6g"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 2,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#F581E0",
"label": "7kpk62m5n8j9q"
}, {
"data": [{
"y": 0,
"x": "2017-12-22 08:59"
}, {
"y": 20,
"x": "2017-12-22 09:00"
}],
"backgroundColor": "#4128A8",
"label": "7mwz4m103nn1k"
}];
Source:stackexchange.com