detectionPlotter

Detection plotter for bird's-eye plot

Syntax

detPlotter = detectionPlotter(bep)

detPlotter = detectionPlotter(bep,Name,Value)

Description

detPlotter = detectionPlotter(bep) creates a DetectionPlotter object that configures the display of object detections on a bird's-eye plot. The DetectionPlotter object is stored in the Plotters property of the input birdsEyePlot object, bep. To plot the object detections, use the plotDetection function.

detPlotter = detectionPlotter(bep,Name,Value) sets properties using one or more Name,Value pair arguments. For example, detectionPlotter(bep,'DisplayName','Detections') sets the display name that appears in the bird's-eye-plot legend.

Examples

Create and Display Labeled Detections on Bird's-Eye Plot

Create a bird's-eye plot with an x-axis range from 0 to 90 meters and a y-axis range from –35 to 35 meters. Create a radar detection plotter that displays detections in blue.

bep = birdsEyePlot('XLim',[0 90],'YLim',[-35 35]);
detPlotter = detectionPlotter(bep,'DisplayName','Radar detections', ...
    'MarkerFaceColor','b');

Display the positions and velocities of three labeled detections.

positions = [30 5; 30 -10; 30 15];
velocities = [-10 0; -10 3; -10 -4];
labels = {'D1','D2','D3'};
plotDetection(detPlotter,positions,velocities,labels);

Input Arguments

bep — Bird’s-eye plot

birdsEyePlot object

Bird’s-eye plot, specified as a birdsEyePlot object.

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: detectionPlotter('Marker','+') sets the marker symbol for detections to a plus sign.

DisplayName — Plotter name to display in legend

'' (default) | character vector | string scalar

Plotter name to display in legend, specified as the comma-separated pair consisting of 'DisplayName' and character vector or string scalar. If you do not specify a name, the bird's-eye plot does not display a legend entry for the plotter.

Marker — Marker symbol for detections

'o' (default) | '+' | '*' | '.' | 'x' | ...

Marker symbol for detections, specified as the comma-separated pair consisting of 'Marker' and one of the markers in this table.

Marker	Description	Resulting Marker
"o"	Circle
"+"	Plus sign
"*"	Asterisk
"."	Point
"x"	Cross
"_"	Horizontal line
"|"	Vertical line
"square"	Square
"diamond"	Diamond
"^"	Upward-pointing triangle
"v"	Downward-pointing triangle
">"	Right-pointing triangle
"<"	Left-pointing triangle
"pentagram"	Pentagram
"hexagram"	Hexagram
"none"	No markers	Not applicable

MarkerSize — Size of marker for detections

6 (default) | positive integer

Size of marker, specified as the comma-separated pair consisting of 'MarkerSize' and a positive integer in points.

MarkerEdgeColor — Marker outline color for detections

[0 0 0] (black) (default) | RGB triplet | hexadecimal color code | color name | short color name

Marker outline color for detections, specified as the comma-separated pair consisting of 'MarkerEdgeColor' and an RGB triplet, a hexadecimal color code, a color name, or a short color name.

For a custom color, specify an RGB triplet or a hexadecimal color code.

• An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range [0,1], for example, [0.4 0.6 0.7].

• A hexadecimal color code is a string scalar or character vector that starts with a hash symbol (#) followed by three or six hexadecimal digits, which can range from 0 to F. The values are not case sensitive. Therefore, the color codes "#FF8800", "#ff8800", "#F80", and "#f80" are equivalent.

Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and the hexadecimal color codes.

Color Name	Short Name	RGB Triplet	Hexadecimal Color Code	Appearance
"red"	"r"	[1 0 0]	"#FF0000"
"green"	"g"	[0 1 0]	"#00FF00"
"blue"	"b"	[0 0 1]	"#0000FF"
"cyan"	"c"	[0 1 1]	"#00FFFF"
"magenta"	"m"	[1 0 1]	"#FF00FF"
"yellow"	"y"	[1 1 0]	"#FFFF00"
"black"	"k"	[0 0 0]	"#000000"
"white"	"w"	[1 1 1]	"#FFFFFF"
"none"	Not applicable	Not applicable	Not applicable	No color

This table lists the default color palettes for plots in the light and dark themes.

Palette	Palette Colors
"gem" — Light theme default Before R2025a: Most plots use these colors by default.
"glow" — Dark theme default

You can get the RGB triplets and hexadecimal color codes for these palettes using the orderedcolors and rgb2hex functions. For example, get the RGB triplets for the "gem" palette and convert them to hexadecimal color codes.

RGB = orderedcolors("gem");
H = rgb2hex(RGB);

Before R2023b: Get the RGB triplets using RGB = get(groot,"FactoryAxesColorOrder").

Before R2024a: Get the hexadecimal color codes using H = compose("#%02X%02X%02X",round(RGB*255)).

MarkerFaceColor — Marker fill color

'none' (default) | RGB triplet | hexadecimal color code | color name | short color name

Marker fill color, specified as the comma-separated pair consisting of 'MarkerFaceColor' and an RGB triplet, a hexadecimal color code, a color name, or a short color name.

For a custom color, specify an RGB triplet or a hexadecimal color code.

• An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range [0,1], for example, [0.4 0.6 0.7].

• A hexadecimal color code is a string scalar or character vector that starts with a hash symbol (#) followed by three or six hexadecimal digits, which can range from 0 to F. The values are not case sensitive. Therefore, the color codes "#FF8800", "#ff8800", "#F80", and "#f80" are equivalent.

Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and the hexadecimal color codes.

Color Name	Short Name	RGB Triplet	Hexadecimal Color Code	Appearance
"red"	"r"	[1 0 0]	"#FF0000"
"green"	"g"	[0 1 0]	"#00FF00"
"blue"	"b"	[0 0 1]	"#0000FF"
"cyan"	"c"	[0 1 1]	"#00FFFF"
"magenta"	"m"	[1 0 1]	"#FF00FF"
"yellow"	"y"	[1 1 0]	"#FFFF00"
"black"	"k"	[0 0 0]	"#000000"
"white"	"w"	[1 1 1]	"#FFFFFF"
"none"	Not applicable	Not applicable	Not applicable	No color

This table lists the default color palettes for plots in the light and dark themes.

Palette	Palette Colors
"gem" — Light theme default Before R2025a: Most plots use these colors by default.
"glow" — Dark theme default

You can get the RGB triplets and hexadecimal color codes for these palettes using the orderedcolors and rgb2hex functions. For example, get the RGB triplets for the "gem" palette and convert them to hexadecimal color codes.

RGB = orderedcolors("gem");
H = rgb2hex(RGB);

Before R2023b: Get the RGB triplets using RGB = get(groot,"FactoryAxesColorOrder").

Before R2024a: Get the hexadecimal color codes using H = compose("#%02X%02X%02X",round(RGB*255)).

FontSize — Font size for labeling detections

10 points (default) | positive integer

Font size for labeling detections, specified as the comma-separated pair consisting of 'FontSize' and a positive integer in font points.

LabelOffset — Gap between label and positional point

[0 0] (default) | real-valued vector of the form [x y]

Gap between label and positional point, specified as the comma-separated pair consisting of 'LabelOffset' and a real-valued vector of the form [x y]. Units are in meters.

VelocityScaling — Scale factor for magnitude length of velocity vectors

1 (default) | positive real scalar

Scale factor for magnitude length of velocity vectors, specified as the comma-separated pair consisting of 'VelocityScaling' and a positive real scalar. The bird's-eye plot renders the magnitude vector value as M × VelocityScaling, where M is the magnitude of velocity.

Tag — Tag associated with plotter object

'PlotterN' (default) | character vector | string scalar

Tag associated with the plotter object, specified as the comma-separated pair consisting of 'Tag' and a character vector or string scalar. The default value is 'PlotterN', where N is an integer that corresponds to the Nth plotter associated with the input birdsEyePlot object.

Output Arguments

detPlotter — Detection plotter

DetectionPlotter object

Detection plotter, returned as a DetectionPlotter object. You can modify this object by changing its property values. The property names correspond to the name-value pair arguments of the detectionPlotter function.

detPlotter is stored in the Plotters property of the input birdsEyePlot object, bep. To plot the detections, use the plotDetection function.

Version History

Introduced in R2017a