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mlreportgen.dom.ImageArea Class

Namespace: mlreportgen.dom

Define image area as hyperlink

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Description

Define an area in an image to hyperlink to. When you click an image area, an HTML browser displays the target page, based on the URL or link target you specify. If the target is in the same document, clicking the link moves you to that location in the document. You can provide alternative text for screen readers that support alternative text. Create image areas in reports with PDF or HTML output. Create the image map using mlreportgen.dom.ImageMap and append areas to the map.

The mlreportgen.dom.ImageArea class is a handle class.

Creation

Description

imageAreaObj = ImageArea creates an empty image area.

imageAreaObj = ImageArea(target,altText,x1,y1,x2,y2) creates a rectangular image area.

imageAreaObj = ImageArea(target,altText,x,y,radius) creates a circular image area.

example

imageAreaObj = ImageArea(target,altText,polygonCoordinates) creates a polygonal image area.

Input Arguments

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Image area hyperlink target, specified as either:

  • URL of the page to be loaded when this image area is clicked

  • Name of a link target

Text to display if the image is not visible, specified as a character vector.

Specify relative to the top-left corner of the image.

Data Types: uint16

Specify relative to the top-left corner of the image, in pixels.

Data Types: uint16

Specify relative to the top-left corner of the image, in pixels.

Data Types: uint16

Specify relative to the top-left corner of the image, in pixels.

Data Types: uint16

Specify relative to the top-left corner of the image, in pixels.

Data Types: uint16

Specify relative to the top-left corner of the image, in pixels.

Data Types: uint16

The radius, in pixels.

Data Types: uint16

Specify an array of x and y coordinate pairs, with coordinates for each corner of the polygon, in the form [x1, y1, x2, y2, ... xN, yN]. Specify the coordinates to reflect the corners of the polygon, in sequence.

Specify each coordinate relative to the top-left corner of the image, in pixels.

Properties

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Image area target, specified as either:

  • URL of the page to be loaded when this image area is clicked

  • Name of a link target

The window in which the target will be opened, specified as a character vector or string scalar.

Possible values are:

  • "samewindow" - (default) opens a target in the same window

  • "newwindow" - opens a target in a new window

Note

This property applies only to HTML output-type reports.

Data Types: char | string

Text to display if the image is not visible, specified as a character vector.

(Read-only) Possible values are:

  • 'rect' — rectangular image area

  • 'circle' — circular image area

  • 'poly' — polygonal image area

(Read-only) The coordinates represent different kinds of points, depending on the shape of the image area. Coordinates are relative to the top-left corner of the image.

  • For a rectangle, the coordinates represent the top-left corner and the bottom-right corner.

  • For a circle, the array represents the coordinates at the center of the circle and the radius.

  • For a polygon, the coordinates represent the corners.

Object identifier for mlreportgen.dom.ImageArea object, specified as a character vector or string scalar. The DOM API generates a session-unique identifier when it creates the document element object. You can specify your own value for Id.

Attributes:

NonCopyable
true

Data Types: char | string

Tag for mlreportgen.dom.ImageArea object, specified as a character vector or string scalar. The DOM API generates a session-unique tag as part of the creation of this object. The generated tag has the form CLASS:ID, where CLASS is the object class and ID is the value of the Id property of the object. Specify your own tag value to help you identify where to look when an issue occurs during document generation.

Attributes:

NonCopyable
true

Data Types: char | string

Examples

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import mlreportgen.dom.*
d = Document('imageArea','pdf');

% Create a plot and save it as an image file
x = 0:pi/100:2*pi;
y = sin(x);
plot(x,y);
annotation('textbox', [0.2,0.4,0.1,0.1],...
           'string', 'Help on plot function');
saveas(gcf,'plot_img.png');

% Create the DOM image object and append it to your document
plot1 = Image('plot_img.png');
append(d,plot1);

% Define the area and link target using ImageArea
target = ['https://www.mathworks.com/help/matlab/ref/' ...
'plot.html?searchHighlight=plot'];
area1 = ImageArea( target, ...
'plot function help',160,340,383,392);

% Create the image map object and append the area to it
map = ImageMap();
append(map,area1);
plot1.Map = map;

close(d);
rptview(d.OutputPath);

Version History

Introduced in R2014b

See Also

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