MATLAB Creating Graphical User Interfaces

10 Lay Out a Programmatic UI

'Units','pixels',...

'Tag','ax');

end

function plotsine(hObject,callbackdata)

theta = 0:pi/64:6*pi;

y = sin(theta);

plot(hs.ax,theta,y);

end

function resizeui(hObject,callbackdata)

% Get figure width and height

figwidth = hs.fig.Position(3);

figheight = hs.fig.Position(4);

% Set button position

bheight = 30;

bwidth = 70;

bbottomedge = figheight - bheight - 50;

bleftedge = 10;

hs.btn.Position = [bleftedge bbottomedge bwidth bheight];

% Set axes position

axheight = .75*figheight;

axbottomedge = max(0,figheight - axheight - 30);

axleftedge = bleftedge + bwidth + 30;

axwidth = max(0,figwidth - axleftedge - 50);

hs.ax.Position = [axleftedge axbottomedge axwidth axheight];

end

end

The resizeui function sets the location and size of the button and axes whenever the

user resizes the window:

• The button height, width, and left edge stay the same when the window resizes.


• The bottom edge of the button, bbottomedge, allows 50 pixels of space between the
  top of the figure and the top of the button.


• The value of the axes height, axheight, is 75% of the available height in the figure.


• The value of the axes bottom edge, axbottomedge, allows 30 pixels of space between
  the top of the figure and the top of the axes. In this calculation, the max function
  limits this value to nonnegative values.