wait

(Not recommended) Block MATLAB command line until ROI creation is finished

wait is not recommended. For more information, see Compatibility Considerations.

Syntax

pos = wait(h)
v = wait(he)

Description

example

pos = wait(h) blocks execution of the MATLAB® command line until you finish positioning the ROI object h. Indicate completion by double-clicking on the ROI object. The function returns the position, pos, of the ROI object.

example

v = wait(he) blocks execution of the MATLAB command line until you finish positioning the ellipse ROI object he. Indicate completion by double-clicking on the ROI object. The function returns the coordinates of vertices, v, along the perimeter of the ellipse.

Examples

Click and Drag to Place Rectangle

Interactively place a rectangle by clicking and dragging. Use wait to block the MATLAB command line. Double-click on the rectangle to resume execution of the MATLAB command line.

imshow('pout.tif')
h = imrect;
position = wait(h)

Click and Drag to Place Ellipse

Interactively place an ellipse by clicking and dragging. Use wait to block the MATLAB command line. Double-click on the ellipse to resume execution of the MATLAB command line.

imshow('coins.png')
h = imellipse;
position = wait(h)

Input Arguments

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ROI object, specified as an imfreehand, imline, impoint, impoly, or imrect object.

Ellipse ROI object, specified as an imellipse object.

Output Arguments

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Position of the ROI object, returned as a numeric array. The shape of the array depends on the type of ROI object, and is consistent with the output of getPosition.

ROI ObjectReturned position
imfreehandn-by-2 matrix. The two columns define the x- and y-coordinates, respectively, of the n points along the boundary of the freehand region.
imline2-by-2 matrix of the form [x1 y1; x2 y2], representing the position of the two endpoints of the line.
impoint1-by-2 vector of the form [x y].
impolyn-by-2 matrix. The two columns define the x- and y-coordinates, respectively, of each of the n vertices.
imrect4-element vector of the form [xmin ymin width height]. The initial size of the rectangle is width-by-height pixels. The upper-left corner of the rectangle is at the (x,y) coordinate (xmin,ymin).

Vertices of ellipse ROI object, returned as an n-by-2 matrix. The two columns define the x- and y-coordinates, respectively, of each of the n vertices. The form of the matrix is consistent with the output of getVertices.

Compatibility Considerations

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Not recommended starting in R2018b

Introduced in R2008a