Enlarge figure in MATLAB

Question

I want to create figure that is enlarged, I use:

fig = figure(1); %These two lines maximize the figure dialogue
set (fig, 'Units', 'normalized', 'Position', [0,0,1,1]);

The dialogue is enlarged. What should I do if I also want the graph inside this dialogue also enlarged? Although I can use "zoom in" and "pan" in the dialogue to enlarge and reposition my graph I want this be done automatically by codes.

Thanks a lot.

Update of my question:

I am trying to plot 3D block which the value is represented by color of each small unit block:

clear; close all; clc; 
fig = figure(1); 
set (fig, 'Units', 'normalized', 'Position', [0,0,1,1]);
fig_color='w'; fig_colordef='white';
cMap=jet(256); %set the colomap using the "jet" scale
faceAlpha1=1;
faceAlpha2=0.65;
edgeColor1='none';
edgeColor2='none';
NumBoxX=100;%box number in x direction
NumBoxY=100;%box number in y direction
NumBoxZ=5;%box number in z direction

fid = fopen('Stress.dat','r');
datacell = textscan(fid, '%f%f%f%f%f%f%f%f%f%f%f%f%f%f'); 
fclose(fid);

all_data = cell2mat(datacell); 

M=zeros(NumBoxX,NumBoxY,NumBoxZ); 

for i=1:NumBoxX            
    for j=1:NumBoxY        
        for k=1:NumBoxZ     
            num=k+NumBoxZ*(j-1)+NumBoxZ*NumBoxY*(i-1);
            M(i,j,k)=all_data(num,4); %the forth column of all_data is dislocation density 
        end
    end
end

indPatch=1:numel(M);
[F,V,C]=ind2patch(indPatch,M,'v'); %Call the function ind2patch in order to plot 3D cube with color

title('\sigma_{xy}','fontsize',20);
xlabel('y','fontsize',20);ylabel('x','fontsize',20); zlabel('z','fontsize',20); hold on;
set(get(gca,'xlabel'),'Position',[5 -50 30]); 
set(get(gca,'ylabel'),'Position',[5 50 -15]);
set(get(gca,'zlabel'),'Position',[64 190 -60]);
patch('Faces',F,'Vertices',V,'FaceColor','flat','CData',C,'EdgeColor','k','FaceAlpha',0.5);
axis equal; view(3); axis tight; axis vis3d; grid off;
colormap(cMap); caxis([min(M(:)) max(M(:))]);
cb = colorbar;                                     
set(get(cb,'title'),'string','Stress (MPa)','fontsize',20);
lbpos = get(cb,'title'); % get the handle of the colorbar title
set(lbpos,'units','normalized','position',[0,1.04]);
zoom(1.9);

I maximize the dialogue, read data from a file and use a function "ind2patch" found in internet to create boxes each has a color determined by a value assigned to it. At the last part I used zoom(1.9) to enlarge it but I want to shift the whole figure without moving the colorbar.

The following is the original picture before zoomed: https://www.dropbox.com/s/xashny3w1fwcb2f/small.jpg?dl=0

The following picture is enlarged using zoom(1.9): https://www.dropbox.com/s/0sfqq1lgo7cm5jd/large.jpg?dl=0

Answer 1

MyAxes=gca;
set(MyAxes,'Units','Normalized','position',[0.1,0.1,0.8,0.8]);

Note that the position you define is with respect to your axes parent, i.e. the figure.

If the figure you want to enlarge is not the current figure, you'll have to dig in your fig object's children in order to find your axes :

MyAxes=get(fig,'Children');
set(MyAxes,'Units','Normalized','position',[0.1,0.1,0.8,0.8]);

Note that, if your figure contains several subplots (thus several axes), you'll have to loop over all of them in order to enlarge them the way you want.

UPDATE : In order to reposition your graph as would the "pan" button do, you'll have to change your axes 'xlim' and 'ylim' properties. For example, if you want to move it 5% to the right and 10% to the top :

 %Get current limits
 MyXLimits=get(MyAxes,'xlim'); %1x2 vector [xmin,xmax]
 MyYLimits=get(MyAxes,'ylim'); %1x2 vector [ymin,ymax]

 %Calculate desired limits
 MyNewXLimits=[MyXLimits(1)+0.05*(MyXLimits(2)-MyXLimits(1))...
               MyXLimits(2)+0.05*(MyXLimits(2)-MyXLimits(1))];

 MyNewYLimits=[MyYLimits(1)+0.1*(MyYLimits(2)-MyYLimits(1))...
               MyYLimits(2)+0.1*(MyYLimits(2)-MyYLimits(1))];

 % Set desired limits
 set(MyAxes,'xlim',MyNewXLimits);
 set(MyAxes,'ylim',MyNewYLimits);

Or if you know a priori the X and Y limits you want :

 %Set desired limits directly
 set(MyAxes,'xlim',[Myxmin Myxmax]);
 set(MyAxes,'ylim',[Myymin Myymax]);

I think you can figure out how to zoom in/zoom out by yourself, as it also involves playing with the limits of your graph.