Removing any previously draw roi on an image

7 次查看（过去 30 天）
Jason
Jason 2020-7-1
评论： Jason 2020-7-1
Hello. I have an image in a UIAxes component (app designer) and have the code below. Everytime I run the code (via pushButton callback), I want tod elete any previous roi ellipses and create a new one, hence I try and delete any previous ones. The way I've done doesn't do anything
[sx,sy]=size(app.imgArray{1})
ax=app.UIAxes3;
g=get(ax,'children')
findall(g, 'type', 'Ellipse');
t = findall(g, 'type', 'Ellipse'); delete(t);
h = images.roi.Ellipse(app.UIAxes3,'Center',[round(sy/2) round(sx/2)],'Semiaxes',[round(sx/2) round(sx/2)],'Color','r','StripeColor','b','LineWidth',1);
Have also tried (but didn't work)
findall(g, 'type', 'line');
t = findall(g, 'type', 'line'); delete(t);

请先登录，再回答此问题。

采纳的回答

Mehmed Saad
Mehmed Saad 2020-7-1
findobj(ax,'Type','images.roi.Ellipse')

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Install Products 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by