hasView

(To be removed) Check if view exists

TheviewSetobject and itshasViewfunction will be removed in a future release. Use theimageviewsetobject and itshasViewfunction instead. For more information, seeCompatibility Considerations.

Syntax

tf = hasView(vSet,viewId)

Description

example

tf= hasView(vSet,viewId)returns1if the view specified byviewIDexists and0if it does not exist.

Examples

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Check If View Exists

Open Live Script

Create an empty viewSet object.

vSet = viewSet;

Detect interest points in the image.

imageDir = fullfile(toolboxdir('vision'),'visiondata','structureFromMotion'); I = imread(fullfile(imageDir,'image1.jpg')); points = detectSURFFeatures(im2gray(I));

Add a new view.

vSet = addView(vSet, 1,'Points',points);

Confirm that the view with ID 1 exists.

tf = hasView(vSet,1);

Input Arguments

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`vSet`—View set object
`viewSet`object

viewSetobject.

`viewId`—View ID
integer

View ID in theviewSet对象,指定为一个integer.

Output Arguments

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`tf`— Validity of view connection
logical

Validity of view connection, returned as a logical1or0.

Version History

Introduced in R2016a

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R2020a:`hasView`function of`viewSet`object will be removed

Not recommended starting in R2020a

TheviewSetobject and itshasViewfunction will be removed in a future release. Instead, manage views and pairwise connections between views of data using use theimageviewsetobject. Check if a view exists in theimageviewsetobject using itshasViewfunction.