{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "description": "Show a line chart corresponding to selected points.",
  "background": "white",
  "padding": 5,
  "width": 300,
  "data": [
    {"name": "pts_store"},
    {
      "name": "source_0",
      "values": [
        {
          "id": "001",
          "ra": 243.35,
          "dec": "+54.6",
          "lc": [{"time": 1, "mag": 18.5}, {"time": 2, "mag": 19}]
        },
        {
          "id": "002",
          "ra": 210.35,
          "dec": "+14.6",
          "lc": [{"time": 1, "mag": 19.5}, {"time": 2, "mag": 20}]
        },
        {
          "id": "003",
          "ra": 143.35,
          "dec": "+33.6",
          "lc": [{"time": 1, "mag": 19}, {"time": 2, "mag": 18}]
        }
      ]
    },
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {"type": "flatten", "fields": ["lc"], "as": ["lc"]},
        {
          "type": "formula",
          "expr": "datum[\"lc\"] && datum[\"lc\"][\"time\"]",
          "as": "lc.time"
        },
        {
          "type": "formula",
          "expr": "datum[\"lc\"] && datum[\"lc\"][\"mag\"]",
          "as": "lc.mag"
        }
      ]
    },
    {
      "name": "data_1",
      "source": "data_0",
      "transform": [
        {
          "type": "aggregate",
          "groupby": ["ra", "dec", "id"],
          "ops": [],
          "fields": [],
          "as": []
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"ra\"]) && isFinite(+datum[\"ra\"]) && isValid(datum[\"dec\"]) && isFinite(+datum[\"dec\"])"
        }
      ]
    },
    {
      "name": "data_2",
      "source": "data_0",
      "transform": [
        {
          "type": "filter",
          "expr": "!length(data(\"pts_store\")) || vlSelectionTest(\"pts_store\", datum)"
        }
      ]
    }
  ],
  "signals": [
    {"name": "childHeight", "value": 200},
    {
      "name": "unit",
      "value": {},
      "on": [
        {"events": "mousemove", "update": "isTuple(group()) ? group() : unit"}
      ]
    },
    {
      "name": "pts",
      "update": "vlSelectionResolve(\"pts_store\", \"union\", true, true)"
    }
  ],
  "layout": {"padding": 20, "columns": 1, "bounds": "full", "align": "each"},
  "marks": [
    {
      "type": "group",
      "name": "concat_0_group",
      "title": {"text": "Sky position", "frame": "group"},
      "style": "cell",
      "encode": {
        "update": {
          "width": {"signal": "width"},
          "height": {"signal": "childHeight"}
        }
      },
      "signals": [
        {
          "name": "pts_tuple",
          "on": [
            {
              "events": [{"source": "scope", "type": "click"}],
              "update": "datum && item().mark.marktype !== 'group' ? {unit: \"concat_0\", fields: pts_tuple_fields, values: [(item().isVoronoi ? datum.datum : datum)[\"id\"]]} : null",
              "force": true
            },
            {
              "events": [{"source": "view", "type": "dblclick"}],
              "update": "null"
            }
          ]
        },
        {"name": "pts_tuple_fields", "value": [{"type": "E", "field": "id"}]},
        {
          "name": "pts_toggle",
          "value": false,
          "on": [
            {
              "events": [{"source": "scope", "type": "click"}],
              "update": "event.shiftKey"
            },
            {
              "events": [{"source": "view", "type": "dblclick"}],
              "update": "false"
            }
          ]
        },
        {
          "name": "pts_modify",
          "on": [
            {
              "events": {"signal": "pts_tuple"},
              "update": "modify(\"pts_store\", pts_toggle ? null : pts_tuple, pts_toggle ? null : true, pts_toggle ? pts_tuple : null)"
            }
          ]
        }
      ],
      "marks": [
        {
          "name": "concat_0_marks",
          "type": "symbol",
          "style": ["circle"],
          "interactive": true,
          "from": {"data": "data_1"},
          "encode": {
            "update": {
              "opacity": {"value": 0.7},
              "fill": [
                {
                  "test": "!length(data(\"pts_store\")) || vlSelectionTest(\"pts_store\", datum)",
                  "value": "steelblue"
                },
                {"value": "grey"}
              ],
              "ariaRoleDescription": {"value": "circle"},
              "description": {
                "signal": "\"ra: \" + (format(datum[\"ra\"], \"\")) + \"; dec: \" + (format(datum[\"dec\"], \"\"))"
              },
              "x": {"scale": "concat_0_x", "field": "ra"},
              "y": {"scale": "concat_0_y", "field": "dec"},
              "size": {"value": 100},
              "shape": {"value": "circle"}
            }
          }
        }
      ],
      "axes": [
        {
          "scale": "concat_0_x",
          "orient": "bottom",
          "gridScale": "concat_0_y",
          "grid": true,
          "tickCount": {"signal": "ceil(width/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        },
        {
          "scale": "concat_0_y",
          "orient": "left",
          "gridScale": "concat_0_x",
          "grid": true,
          "tickCount": {"signal": "ceil(childHeight/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        },
        {
          "scale": "concat_0_x",
          "orient": "bottom",
          "grid": false,
          "title": "ra",
          "labelFlush": true,
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(width/40)"},
          "zindex": 0
        },
        {
          "scale": "concat_0_y",
          "orient": "left",
          "grid": false,
          "title": "dec",
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(childHeight/40)"},
          "zindex": 0
        }
      ]
    },
    {
      "type": "group",
      "name": "concat_1_group",
      "title": {"text": "Light curve", "frame": "group"},
      "style": "cell",
      "encode": {
        "update": {
          "width": {"signal": "width"},
          "height": {"signal": "childHeight"}
        }
      },
      "marks": [
        {
          "name": "concat_1_pathgroup",
          "type": "group",
          "from": {
            "facet": {
              "name": "faceted_path_concat_1_main",
              "data": "data_2",
              "groupby": ["id"]
            }
          },
          "encode": {
            "update": {
              "width": {"field": {"group": "width"}},
              "height": {"field": {"group": "height"}}
            }
          },
          "marks": [
            {
              "name": "concat_1_marks",
              "type": "line",
              "style": ["line"],
              "sort": {"field": "datum[\"lc.time\"]"},
              "interactive": false,
              "from": {"data": "faceted_path_concat_1_main"},
              "encode": {
                "update": {
                  "stroke": {"value": "steelblue"},
                  "description": {
                    "signal": "\"lc.time: \" + (format(datum[\"lc.time\"], \"\")) + \"; lc.mag: \" + (format(datum[\"lc.mag\"], \"\")) + \"; id: \" + (isValid(datum[\"id\"]) ? datum[\"id\"] : \"\"+datum[\"id\"])"
                  },
                  "x": {"scale": "concat_1_x", "field": "lc\\.time"},
                  "y": {"scale": "concat_1_y", "field": "lc\\.mag"},
                  "defined": {
                    "signal": "isValid(datum[\"lc.time\"]) && isFinite(+datum[\"lc.time\"]) && isValid(datum[\"lc.mag\"]) && isFinite(+datum[\"lc.mag\"])"
                  }
                }
              }
            }
          ]
        }
      ],
      "axes": [
        {
          "scale": "concat_1_x",
          "orient": "bottom",
          "gridScale": "concat_1_y",
          "grid": true,
          "tickCount": {"signal": "ceil(width/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        },
        {
          "scale": "concat_1_y",
          "orient": "left",
          "gridScale": "concat_1_x",
          "grid": true,
          "tickCount": {"signal": "ceil(childHeight/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        },
        {
          "scale": "concat_1_x",
          "orient": "bottom",
          "grid": false,
          "title": "lc.time",
          "labelFlush": true,
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(width/40)"},
          "zindex": 0
        },
        {
          "scale": "concat_1_y",
          "orient": "left",
          "grid": false,
          "title": "lc.mag",
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(childHeight/40)"},
          "zindex": 0
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "concat_0_x",
      "type": "linear",
      "domain": {"data": "data_1", "field": "ra"},
      "range": [0, {"signal": "width"}],
      "zero": false,
      "nice": true
    },
    {
      "name": "concat_0_y",
      "type": "linear",
      "domain": {"data": "data_1", "field": "dec"},
      "range": [{"signal": "childHeight"}, 0],
      "nice": true,
      "zero": true
    },
    {
      "name": "concat_1_x",
      "type": "linear",
      "domain": {"data": "data_2", "field": "lc\\.time"},
      "range": [0, {"signal": "width"}],
      "zero": false,
      "nice": true
    },
    {
      "name": "concat_1_y",
      "type": "linear",
      "domain": {"data": "data_2", "field": "lc\\.mag"},
      "range": [{"signal": "childHeight"}, 0],
      "nice": true,
      "zero": true
    }
  ]
}