how to add a STAR or Triangle shape to plot simply without knowing their vertex?

Hi

I have a contourf. I'd like to just add a simple Star or Triangular shape to certian location within the plot. I am thinking to use Patch() but patch still requires to provide the vertext of this Star or triangular shape in order to draw it. Is there a command to add this shape without knowing their vertex? Thanks

Answer 1

[Jonas]

smth. like that probably

Z = peaks;
contourf(Z); hold on; 
plot(15,10,'rp','MarkerSize',15,'MarkerFaceColor','r')

all markers can be found here, there are also triangles and hexagonal stars

[roudan]

Thanks Jonas. It works perfectly. I appreciate your help. It saved me a lot of time. Now another question, how do I delete this shape later? I am creating a array to save the handle of the shape, then later using delete(handle) and the error says Cannot access method 'delete' in class 'matlab.ui.Root'. I found the data saved in the handle array is not a handle and it is just a number. Thanks for your help.

[Jonas]

hi roudan, you can show your code how you saved your handles. the following worked for me without problems:

Z = peaks;
contourf(Z); hold on; 
mark=plot(15,10,'rp','MarkerSize',15,'MarkerFaceColor','r');
delete(mark)

[roudan]

Thanks Jonas