hello Daniel
you need to freeze your axes , otherwise you will not get the desired results
here I simply used "hold on" after the axes generation, but you may also set the axes properties like : Sets XLimMode , YLimMode , and ZLimMode to 'manual';
figure;
% test of the image fuction with matlab R2019b
Haxe=axes('position',[0 0 1 1],'Xlim',[0 500],'Ylim',[0 500]);
hold on % freeze axes !!
line([0 500],[0 500]); % Crée une croix sur mon axe
line([500 0],[0 500]);
rectangle('position',[200,200,100,100],'facecolor','r'); %cree un rectangle rouge "centré" sur la croix
% the goal is tu put the image exactly whereis the red square
MonImage=imread('MonImage.png'); % l'image png est de taille [100 100]
% essai 2
Xpos=[200 300];
Ypos=[200 300];
MonHandle=image(Xpos,Ypos,MonImage);
