Výrazy stylu řízené daty (Android SDK)

//Create a point feature.
Feature feature = Feature.fromGeometry(Point.fromLngLat(-100, 45));

//Add properties to the feature.
feature.addNumberProperty("id", 123);
feature.addStringProperty("entityType", "restaurant");
feature.addNumberProperty("revenue", 12345);
feature.addStringProperty("subTitle", "Building 40");
feature.addNumberProperty("temperature", 64);
feature.addStringProperty("title", "Cafeteria");
feature.addStringProperty("zoneColor", "purple");

JsonArray abcArray = new JsonArray();
abcArray.add("a");
abcArray.add("b");
abcArray.add("c");

feature.addProperty("abcArray", abcArray);

JsonArray array1 = new JsonArray();
array1.add("a");
array1.add("b");

JsonArray array2 = new JsonArray();
array1.add("x");
array1.add("y");

JsonArray array2d = new JsonArray();
array2d.add(array1);
array2d.add(array2);

feature.addProperty("array2d", array2d);

JsonObject style = new JsonObject();
style.addProperty("fillColor", "red");

feature.addProperty("_style", style);

//Create a point feature.
val feature = Feature.fromGeometry(Point.fromLngLat(-100, 45))

//Add properties to the feature.
feature.addNumberProperty("id", 123)
feature.addStringProperty("entityType", "restaurant")
feature.addNumberProperty("revenue", 12345)
feature.addStringProperty("subTitle", "Building 40")
feature.addNumberProperty("temperature", 64)
feature.addStringProperty("title", "Cafeteria")
feature.addStringProperty("zoneColor", "purple")

val abcArray = JsonArray()
abcArray.add("a")
abcArray.add("b")
abcArray.add("c")

feature.addProperty("abcArray", abcArray)

val array1 = JsonArray()
array1.add("a")
array1.add("b")

val array2 = JsonArray()
array1.add("x")
array1.add("y")

val array2d = JsonArray()
array2d.add(array1)
array2d.add(array2)

feature.addProperty("array2d", array2d)

val style = JsonObject()
style.addProperty("fillColor", "red")

feature.addProperty("_style", style)

String featureString = "{\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[-122.13284,47.63699]},\"properties\":{\"id\":123,\"entityType\":\"restaurant\",\"revenue\":12345,\"subTitle\":\"Building 40\",\"temperature\":64,\"title\":\"Cafeteria\",\"zoneColor\":\"purple\",\"abcArray\":[\"a\",\"b\",\"c\"],\"array2d\":[[\"a\",\"b\"],[\"x\",\"y\"]],\"_style\":{\"fillColor\":\"red\"}}}";

Feature feature = Feature.fromJson(featureString);

val featureString = "{\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[-122.13284,47.63699]},\"properties\":{\"id\":123,\"entityType\":\"restaurant\",\"revenue\":12345,\"subTitle\":\"Building 40\",\"temperature\":64,\"title\":\"Cafeteria\",\"zoneColor\":\"purple\",\"abcArray\":[\"a\",\"b\",\"c\"],\"array2d\":[[\"a\",\"b\"],[\"x\",\"y\"]],\"_style\":{\"fillColor\":\"red\"}}}"

val feature = Feature.fromJson(featureString)

Expression exp = Expression.raw("['get','title']")

val exp = Expression.raw("['get','title']")

BubbleLayer layer = new BubbleLayer(source,
    //Get the zoneColor value.
    bubbleColor(get("zoneColor"))
);

val layer = BubbleLayer(source,
    //Get the zoneColor value.
    bubbleColor(get("zoneColor"))
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        //Use a conditional case expression.
        switchCase(
            //Check to see if feature has a "zoneColor" 
            has("zoneColor"), 

            //If it does, use it.
            get("zoneColor"), 

            //If it doesn't, default to blue.
            literal("blue")
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        //Use a conditional case expression.
        switchCase(
            //Check to see if feature has a "zoneColor" 
            has("zoneColor"), 

            //If it does, use it.
            get("zoneColor"), 

            //If it doesn't, default to blue.
            literal("blue")
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    filter(eq(geometryType(), "Point"))
);

val layer = BubbleLayer(source,
    filter(eq(geometryType(), "Point"))
)

BubbleLayer layer = new BubbleLayer(source,
    filter(any(eq(geometryType(), "Point"), eq(geometryType(), "MultiPoint")))
);

val layer = BubbleLayer(source,
    filter(any(eq(geometryType(), "Point"), eq(geometryType(), "MultiPoint")))
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        switchCase(
            //Check to see if the first boolean expression is true, and if it is, return its assigned result.
            //If it has a zoneColor property, use its value as a color.
            has("zoneColor"), toColor(get("zoneColor")),

            //Check to see if the second boolean expression is true, and if it is, return its assigned result.
            //If it has a temperature property with a value greater than or equal to 100, make it red.
            all(has("temperature"), gte(get("temperature"), 100)), color(Color.RED),

            //Specify a default value to return. In this case green.
            color(Color.GREEN)
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        switchCase(
            //Check to see if the first boolean expression is true, and if it is, return its assigned result.
            //If it has a zoneColor property, use its value as a color.
            has("zoneColor"), toColor(get("zoneColor")),

            //Check to see if the second boolean expression is true, and if it is, return its assigned result.
            //If it has a temperature property with a value greater than or equal to 100, make it red.
            all(has("temperature"), gte(get("temperature"), 100)), color(Color.RED),

            //Specify a default value to return. In this case green.
            color(Color.GREEN)
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        match(
            //Get the input value to match.
            get("entityType"),

            //Specify a default value to return if no match is found.
            color(Color.BLACK),

            //List the values to match and the result to return for each match.

            //If value is "restaurant" return "red".
            stop("restaurant", color(Color.RED)),

            //If value is "park" return "green".
            stop("park", color(Color.GREEN))
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        match(
            //Get the input value to match.
            get("entityType"),

            //Specify a default value to return if no match is found.
            color(Color.BLACK),

            //List the values to match and the result to return for each match.

            //If value is "restaurant" return "red".
            stop("restaurant", color(Color.RED)),

            //If value is "park" return "green".
            stop("park", color(Color.GREEN))
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        match(
            //Get the input value to match.
            get("entityType"),

            //Specify a default value to return if no match is found.
            color(Color.BLACK),

            //List the values to match and the result to return for each match.

            //If value is "restaurant" or "grocery_store" return "red".
            stop(Arrays.asList("restaurant", "grocery_store"), color(Color.RED)),

            //If value is "park" return "green".
            stop("park", color(Color.GREEN))
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        match(
            //Get the input value to match.
            get("entityType"),

            //Specify a default value to return if no match is found.
            color(Color.BLACK),

            //List the values to match and the result to return for each match.

            //If value is "restaurant" or "grocery_store" return "red".
            stop(arrayOf("restaurant", "grocery_store"), color(Color.RED)),

            //If value is "park" return "green".
            stop("park", color(Color.GREEN))
        )
    )
)

SymbolLayer layer = new SymbolLayer(source,
    textField(
        coalesce(
            //Try getting the title property.
            get("title"),

            //If there is no title, try getting the subTitle. 
            get("subTitle"),

            //Default to an empty string.
            literal("")
        )
    )
);

val layer = SymbolLayer(source,
    textField(
        coalesce(
            //Try getting the title property.
            get("title"),

            //If there is no title, try getting the subTitle. 
            get("subTitle"),

            //Default to an empty string.
            literal("")
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        //Create a RGB color value.
        rgb(
            //Set red value to 255. Wrap with literal expression since using expressions for other values.
            literal(255f),    

            //Multiple the temperature by 2.5 and set the green value.
            product(literal(2.5f), get("temperature")), 

            //Multiple the temperature by 2.5 and set the blue value.
            product(literal(2.5f), get("temperature")) 
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        //Create a RGB color value.
        rgb(
            //Set red value to 255. Wrap with literal expression since using expressions for other values.
            literal(255f),    

            //Multiple the temperature by 2.5 and set the green value.
            product(literal(2.5f), get("temperature")), 

            //Multiple the temperature by 2.5 and set the blue value.
            product(literal(2.5f), get("temperature")) 
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        //Create a RGB color value.
        rgb(
            255f,  //Set red value to 255.

            150f,  //Set green value to 150.

            0f     //Set blue value to 0.
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        //Create a RGB color value.
        rgb(
            255f,  //Set red value to 255.

            150f,  //Set green value to 150.

            0f     //Set blue value to 0.
        )
    )
)

SymbolLayer layer = new SymbolLayer(source,
    textField(
        concat(Expression.toString(get("temperature")), literal("°F"))
    ),

    //Some additional style options.
    textOffset(new Float[] { 0f, -1.5f }),
    textSize(12f),
    textColor("white")
);

val layer = SymbolLayer(source,
    textField(
        concat(Expression.toString(get("temperature")), literal("°F"))
    ),

    //Some additional style options.
    textOffset(new Float[] { 0f, -1.5f }),
    textSize(12f),
    textColor("white")
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        interpolate(
            linear(),
            get("temperature"),
            stop(50, color(Color.BLUE)),
            stop(60, color(Color.YELLOW)),
            stop(70, color(parseColor("#FFA500"))),
            stop(80, color(Color.RED))
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        interpolate(
            linear(),
            get("temperature"),
            stop(50, color(Color.BLUE)),
            stop(60, color(Color.YELLOW)),
            stop(70, color(parseColor("#FFA500"))),
            stop(80, color(Color.RED))
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(
        step(
            get("temperature"),
            color(Color.BLUE),
            stop(60, color(Color.YELLOW)),
            stop(70, color(parseColor("#FFA500"))),
            stop(80, color(Color.RED))
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(
        step(
            get("temperature"),
            color(Color.BLUE),
            stop(60, color(Color.YELLOW)),
            stop(70, color(parseColor("#FFA500"))),
            stop(80, color(Color.RED))
        )
    )
)

HeatMapLayer layer = new HeatMapLayer(source,
    heatmapColor(
        interpolate(
            linear(),
            heatmapDensity(),
            stop(0, color(Color.TRANSPARENT)),
            stop(0.01, color(Color.MAGENTA)),
            stop(0.5, color(parseColor("#fb00fb"))),
            stop(1, color(parseColor("#00c3ff")))
        )
    )
);

val layer = HeatMapLayer(source,
    heatmapColor(
        interpolate(
            linear(),
            heatmapDensity(),
            stop(0, color(Color.TRANSPARENT)),
            stop(0.01, color(Color.MAGENTA)),
            stop(0.5, color(parseColor("#fb00fb"))),
            stop(1, color(parseColor("#00c3ff")))
        )
    )
)

HeatMapLayer layer = new HeatMapLayer(source,
    heatmapColor(
        step(
            heatmapDensity(),
            color(Color.TRANSPARENT),
            stop(0.01, color(parseColor("#000080"))),
            stop(0.25, color(parseColor("#000080"))),
            stop(0.5, color(Color.GREEN)),
            stop(0.5, color(Color.YELLOW)),
            stop(1, color(Color.RED))
        )
    )
);

val layer = HeatMapLayer(source,
    heatmapColor(
        step(
            heatmapDensity(),
            color(Color.TRANSPARENT),
            stop(0.01, color(parseColor("#000080"))),
            stop(0.25, color(parseColor("#000080"))),
            stop(0.5, color(Color.GREEN)),
            stop(0.5, color(Color.YELLOW)),
            stop(1, color(Color.RED))
        )
    )
)

LineLayer layer = new LineLayer(source,
    strokeGradient(
        interpolate(
            linear(),
            lineProgress(),
            stop(0, color(Color.BLUE)),
            stop(0.1, color(Color.argb(255, 65, 105, 225))), //Royal Blue
            stop(0.3, color(Color.CYAN)),
            stop(0.5, color(Color.argb(255,0, 255, 0))), //Lime
            stop(0.7, color(Color.YELLOW)),
            stop(1, color(Color.RED))
        )
    )
);

val layer = LineLayer(source,
    strokeGradient(
        interpolate(
            linear(),
            lineProgress(),
            stop(0, color(Color.BLUE)),
            stop(0.1, color(Color.argb(255, 65, 105, 225))), //Royal Blue
            stop(0.3, color(Color.CYAN)),
            stop(0.5, color(Color.argb(255,0, 255, 0))), //Lime
            stop(0.7, color(Color.YELLOW)),
            stop(1, color(Color.RED))
        )
    )
)

SymbolLayer layer = new SymbolLayer(source,
    textField(
        format(
            //Bold the title property and scale its font size up.
            formatEntry(
                get("title"),
                formatTextFont(new String[] { "StandardFont-Bold" }),
                formatFontScale(1.25)),

            //Add a new line without any formatting.
            formatEntry("\n"),

            //Scale the font size down of the subTitle property.
            formatEntry(
                get("subTitle"),
                formatFontScale(0.75))
        )
    )
);

val layer = SymbolLayer(source,
    textField(
        format(
            //Bold the title property and scale its font size up.
            formatEntry(
                get("title"),
                formatTextFont(arrayOf("StandardFont-Bold")),
                formatFontScale(1.25)),

            //Add a new line without any formatting.
            formatEntry("\n"),

            //Scale the font size down of the subTitle property.
            formatEntry(
                get("subTitle"),
                formatFontScale(0.75))
        )
    )
)

HeatMapLayer layer = new HeatMapLayer(source,
    heatmapRadius(
        interpolate(
            exponential(2),
            zoom(),

            //For zoom level 1 set the radius to 2 pixels.
            stop(1, 2),

            //Between zoom level 1 and 19, exponentially scale the radius from 2 pixels to 2 * (maxZoom - minZoom)^2 pixels.
            stop(19, 2 * Math.pow(2, 19 - 1))
        )
    )
);

val layer = HeatMapLayer(source,
    heatmapRadius(
        interpolate(
            exponential(2),
            zoom(),

            //For zoom level 1 set the radius to 2 pixels.
            stop(1, 2),

            //Between zoom level 1 and 19, exponentially scale the radius from 2 pixels to 2 * (maxZoom - minZoom)^2 pixels.
            stop(19, 2 * Math.pow(2, 19 - 1))
        )
    )
)

BubbleLayer layer = new BubbleLayer(source,
    bubbleColor(           
        let(
            //Divide the point features `revenue` property by the `temperature` property and store it in a variable called `ratio`.
            literal("ratio"), division(get("revenue"), get("temperature")),

            //Evaluate the child expression in which the stored variable will be used.
            switchCase(
                //Check to see if the ratio is less than 100, return 'red'.
                lt(var("ratio"), 100), color(Color.RED),

                //Check to see if the ratio is less than 200, return 'green'.
                lt(var("ratio"), 200), color(Color.GREEN),

                //Return `blue` for values greater or equal to 200.
                color(Color.BLUE)
            )
        )
    )
);

val layer = BubbleLayer(source,
    bubbleColor(           
        let(
            //Divide the point features `revenue` property by the `temperature` property and store it in a variable called `ratio`.
            literal("ratio"), division(get("revenue"), get("temperature")),

            //Evaluate the child expression in which the stored variable will be used.
            switchCase(
                //Check to see if the ratio is less than 100, return 'red'.
                lt(var("ratio"), 100), color(Color.RED),

                //Check to see if the ratio is less than 200, return 'green'.
                lt(var("ratio"), 200), color(Color.GREEN),

                //Return `blue` for values greater or equal to 200.
                color(Color.BLUE)
            )
        )
    )
)