Data does not support the Point structure

[rodneyjoyce]

Hi,

I'm working on a graph that has 2 lines and a different number of point for each series.
If a List is used then the X-axis positions are ordinal, which means the graph is wrong - the JS version supports a Point.

For example:
Labels on X axis = 1,2,3,4,5
Data 1: x=3,y=20
Data 2: x=1,y=6, x=2,y=7,x=5,y=10

I'll have a look at the source to see if this could be supported easily..

[rodneyjoyce]

Ah, I have found LineScatterDataset - looks like it does the job, thanks

[rodneyjoyce]

Unfortunately, LineScatterData only works if the X axis is a number.

I am using different data - e.g. TimeStamps. Here's an example of the problem with day's of the week. It works in JS but currently not possible to do:

var data = {
labels: ["M","T","W","TH","F"],
datasets: [{
label: "Stock A",
data: [{
x: 'T',
y: 20
}, {
x: "TH",
y: 10
}],
}, {
label: "Stock B",
data: [{
x: "M",
y: 3
}, {
x: "T",
y: 11
},
{
x: "W",
y: 4
}, {
x: "TH",
y: 19
}
, {
x: "F",
y: 21
}],
}
]
};

[mattosaurus]

Hi @rodneyjoyce, do you have a link to the chart.js documentation for this? Am happy to update this but would be good to make sure I include all possible datatypes.

[rodneyjoyce]

Hi @mattosaurus . On this link, http://www.chartjs.org/docs/latest/charts/line.html, scroll down to "Data Structure" and you'll see the other format:
The data property of a dataset for a line chart can be passed in two formats."

[mattosaurus]

I've updated the x and y properties of LineScatterData to be strings, if they parse as a double then the value will be output without quotes, if not then the original string be output. I'm not sure this is the best way to do it as I imagine that most values for these will be doubles so these will now need to be converted to strings but I can't think of a better solution. This has been published now, let me know if you have any better ideas.

[rodneyjoyce]

Ok, I'll try it out now and let you know, thanks.

[rodneyjoyce]

Works great, thanks