Set text label for point ROI object
setString is not recommended. With the new
set the value of the
Label property instead. For more information,
see Compatibility Considerations.
Set Label of Point ROI
Display an image and create a point ROI.
imshow("rice.png") h = impoint(gca,100,200);
Set the label of the ROI.
setString(h,"My point label");
text — Text label
string scalar | character vector
Text label, specified as a string scalar or character vector.
Version HistoryIntroduced before R2006a
setString is not recommended
Starting in R2018b, a new set of ROI objects replaces the existing set of ROI objects. The new objects provide more functional capabilities, such as face color transparency. The new classes also support events that you can use to respond to changes in your ROI such as moving or being clicked. Although there are no plans to remove the old ROI objects at this time, switch to the new ROIs to take advantage of the additional capabilities and flexibility. For more information on creating ROIs using the new ROI functions, see Create ROI Shapes.
To specify a label for a point ROI, assign a value to the
property of the ROI. Use the
LabelVisible property to control the
visibility of the label.
Update all instances of
|Discouraged Usage||Recommended Replacement|
This example specifies a label for the point ROI using
imshow("cameraman.tif"); h = impoint(gca,[100 100]); setString(h,"My Label");
Create a point ROI using the new ROI objects and
replace use of the
imshow("cameraman.tif"); h = drawpoint(gca,"Position",[100 100]); h.Label = "My Label";