Graph renders without lines:
```
{
"legends": [
{
"stroke": "color",
"title": "Legend",
"fill": "color"
}
],
"scales": [
{
"type": "linear",
"name": "x",
"domain": {
"data": "chart",
"field": "x"
},
"zero": false,
"range": "width",
"nice": true
},
{
"type": "linear",
"name": "y",
"domain": {
"data": "chart",
"field": "y"
},
"zero": false,
"range": "height",
"nice": true
},
{
"domain": {
"data": "chart",
"field": "series"
},
"type": "ordinal",
"name": "color",
"range": [
"#0000aa",
"#ff8000"
]
}
],
"version": 2,
"marks": [
{
"type": "group",
"marks": [
{
"properties": {
"hover": {
"stroke": {
"value": "red"
}
},
"update": {
"stroke": {
"scale": "color",
"field": "series"
}
},
"enter": {
"y": {
"scale": "y",
"field": "y"
},
"x": {
"scale": "x",
"field": "x"
},
"stroke": {
"scale": "color",
"field": "series"
},
"strokeWidth": {
"value": 2.5
}
}
},
"type": "line"
}
],
"from": {
"data": "chart",
"transform": [
{
"groupby": [
"series"
],
"type": "facet"
}
]
}
}
],
"height": 150,
"axes": [
{
"type": "x",
"title": "X",
"scale": "x",
"format": "d",
"properties": {
"axis": {
"strokeWidth": {
"value": 2
},
"stroke": {
"value": "#54595d"
}
},
"ticks": {
"stroke": {
"value": "#54595d"
}
},
"title": {
"fill": {
"value": "#54595d"
}
},
"labels": {
"fill": {
"value": "#54595d"
}
}
},
"grid": true
},
{
"type": "y",
"title": "Y",
"scale": "y",
"format": "d",
"properties": {
"title": {
"fill": {
"value": "#54595d"
}
},
"grid": {
"stroke": {
"value": "#54595d"
}
},
"ticks": {
"stroke": {
"value": "#54595d"
}
},
"axis": {
"strokeWidth": {
"value": 2
},
"stroke": {
"value": "#54595d"
}
},
"labels": {
"fill": {
"value": "#54595d"
}
}
},
"grid": true
}
],
"data": [
{
"format": {
"parse": {
"y": "integer",
"x": "integer"
},
"type": "json"
},
"name": "chart",
"values": [
{
"y": 10,
"series": "Y1 Series",
"x": 1
},
{
"y": 12,
"series": "Y1 Series",
"x": 2
},
{
"y": 6,
"series": "Y1 Series",
"x": 3
},
{
"y": 14,
"series": "Y1 Series",
"x": 4
},
{
"y": 2,
"series": "Y1 Series",
"x": 5
},
{
"y": 10,
"series": "Y1 Series",
"x": 6
},
{
"y": 7,
"series": "Y1 Series",
"x": 7
},
{
"y": 9,
"series": "Y1 Series",
"x": 8
},
{
"y": 2,
"series": "Y2 Series",
"x": 1
},
{
"y": 4,
"series": "Y2 Series",
"x": 2
},
{
"y": 6,
"series": "Y2 Series",
"x": 3
},
{
"y": 8,
"series": "Y2 Series",
"x": 4
},
{
"y": 13,
"series": "Y2 Series",
"x": 5
},
{
"y": 11,
"series": "Y2 Series",
"x": 6
},
{
"y": 9,
"series": "Y2 Series",
"x": 7
},
{
"y": 2,
"series": "Y2 Series",
"x": 8
}
]
}
],
"width": 400
}
```