Please help in below question:

Below is the code which is in the veg editor :

https://vega.github.io/editor/#/examples/vega/scatter-plot-null-values.

Code below: Please execute this in above link.

{

"$schema": "https://vega.github.io/schema/vega/v5.json",

"description": "A scatter plot of film statistics, with null values visualized along the axes.",

"width": 450,

"height": 450,

"padding": 5,

"autosize": {"type": "fit", "resize": true},

"signals": [

{ "name": "yField", "value": "IMDB Rating",

"bind": {"input": "select", "options": ["IMDB Rating", "Rotten Tomatoes Rating", "US Gross", "Worldwide Gross"]} },

{ "name": "xField", "value": "Rotten Tomatoes Rating",

"bind": {"input": "select", "options": ["IMDB Rating", "Rotten Tomatoes Rating", "US Gross", "Worldwide Gross"]} },

{ "name": "nullSize", "value": 8 },

{ "name": "nullGap", "update": "nullSize + 10" }

],

"data": [

{

"name": "movies",

"url": "data/movies.json",

"transform": [

{

"type": "formula",

"expr": "datum.Title + ' (' + (year(datum['Release Date']) || '?') + ')'",

"as": "tooltip"

}

]

},

{

"name": "valid",

"source": "movies",

"transform": [

{

"type": "filter",

"expr": "datum[xField] != null && datum[yField] != null"

}

]

},

{

"name": "nullXY",

"source": "movies",

"transform": [

{

"type": "filter",

"expr": "datum[xField] == null && datum[yField] == null"

},

{ "type": "aggregate" }

]

},

{

"name": "nullY",

"source": "movies",

"transform": [

{

"type": "filter",

"expr": "datum[xField] != null && datum[yField] == null"

}

]

},

{

"name": "nullX",

"source": "movies",

"transform": [

{

"type": "filter",

"expr": "datum[xField] == null && datum[yField] != null"

}

]

}

],

"scales": [

{

"name": "yscale",

"type": "linear",

"range": [{"signal": "height - nullGap"}, 0],

"nice": true,

"domain": {"data": "valid", "field": {"signal": "yField"}}

},

{

"name": "xscale",

"type": "linear",

"range": [{"signal": "nullGap"}, {"signal": "width"}],

"nice": true,

"domain": {"data": "valid", "field": {"signal": "xField"}}

}

],

"axes": [

{

"orient": "bottom", "scale": "xscale", "offset": 5, "format": "s",

"title": {"signal": "xField"}

},

{

"orient": "left", "scale": "yscale", "offset": 5, "format": "s",

"title": {"signal": "yField"}

}

],

"marks": [

{

"type": "symbol",

"from": {"data": "valid"},

"encode": {

"enter": {

"size": {"value": 50},

"tooltip": {"field": "tooltip"}

},

"update": {

"x": {"scale": "xscale", "field": {"signal": "xField"}},

"y": {"scale": "yscale", "field": {"signal": "yField"}},

"fill": {"value": "steelblue"},

"fillOpacity": {"value": 0.5},

"zindex": {"value": 0}

},

"hover": {

"fill": {"value": "firebrick"},

"fillOpacity": {"value": 1},

"zindex": {"value": 1}

}

}

},

{

"type": "symbol",

"from": {"data": "nullY"},

"encode": {

"enter": {

"size": {"value": 50},

"tooltip": {"field": "tooltip"}

},

"update": {

"x": {"scale": "xscale", "field": {"signal": "xField"}},

"y": {"signal": "height - nullSize/2"},

"fill": {"value": "#aaa"},

"fillOpacity": {"value": 0.2}

},

"hover": {

"fill": {"value": "firebrick"},

"fillOpacity": {"value": 1}

}

}

},

{

"type": "symbol",

"from": {"data": "nullX"},

"encode": {

"enter": {

"size": {"value": 50},

"tooltip": {"field": "tooltip"}

},

"update": {

"x": {"signal": "nullSize/2"},

"y": {"scale": "yscale", "field": {"signal": "yField"}},

"fill": {"value": "#aaa"},

"fillOpacity": {"value": 0.2},

"zindex": {"value": 0}

},

"hover": {

"fill": {"value": "firebrick"},

"fillOpacity": {"value": 1},

"zindex": {"value": 1}

}

}

},

{

"type": "text",

"interactive": false,

"from": {"data": "nullXY"},

"encode": {

"update": {

"x": {"signal": "nullSize", "offset": -4},

"y": {"signal": "height", "offset": 13},

"text": {"signal": "datum.count + ' null'"},

"align": {"value": "right"},

"baseline": {"value": "top"},

"fill": {"value": "#999"},

"fontSize": {"value": 9}

}

}

}

]

}

Question:

Please help in add radio buttons to this code that will allow changing the color of the points. After adding radio buttons the picture should look like as attached image:

146 nex (180 xloc) | 6.57 KB Assignment que lauko DULUI w aw changing the color on une poinna, roul TesUIL SITOGIO TOOK BIKE LITIS. IMDB Rating 10- 9 8 7 3- 2- 1 0 152 null yField xField color 0 10 20 30 40 50 60 Rotten Tomatoes Rating IMDB Rating Rotten Tomatoes Rating : steelblue Ored green 70 80 (> D 90 Raw Burun 100