Exporting figure keeping in given pixel size

I want to save my figure in tiff format with given dimensions i.e 2464 * 2056 pixels.

However, when I use saveas(gcf,['locationr' num2str(j) '.tif']); I get this error ie

Error using print (line 83):

Unable to create output using specified size and resolution. Specify a smaller value for the PaperPosition

property of the figure or specify a smaller resolution value.

My code is as follows:

 figure;
    xlim([0 2500]);
    ylim([0 2056]);
    set(gca,'YDir','reverse');
    set(gca,'Units','normalized','Position',[0 0 1 1]); 
    rez = [r c]; %set desired [horizontal vertical] resolution
    set(gcf,'PaperPosition',[0 0 rez]); 
    hold on; x1=[]; y1=[]; x2=[]; y2=[]; u=[]; v=[];
    x1=D4(:,1)
    y1=D4(:,2)
    x2=D4(:,3)
    y2=D4(:,4)
    u=x2-x1;
    v=y2-y1;
    q = quiver(x1,y1,u,v,'k', 'linewidth',5);
    q.ShowArrowHead = 'off';
    q.Marker = 'none';
     saveas(gcf,['location' num2str(j)  '.tif']);

[Eric Delgado]

See this discussion.

https://www.mathworks.com/matlabcentral/answers/272767-how-to-set-exact-figure-size-in-pixels

[PRAGYA ARORA]

Thankyou

Answer 1

[Askic V]

The preferred way to save figures is to use builtin function called exportgraphics

Usually, if you need finer/better resolution for printing you specify DPI (dots per inch).

Please have a look at the following code:

figure;
xlim([0 2500]);
ylim([0 2056]);
set(gca,'YDir','reverse');
set(gca,'Units','normalized','Position',[0 0 1 1]);
hold on; x1=[]; y1=[]; x2=[]; y2=[]; u=[]; v=[];
x1=D4(:,1)
y1=D4(:,2)
x2=D4(:,3)
y2=D4(:,4)
u=x2-x1;
v=y2-y1;
q = quiver(x1,y1,u,v,'k', 'linewidth',5);
q.ShowArrowHead = 'off';
q.Marker = 'none';
% The preferred way is to use exportgraphics
exportgraphics(gcf,'test.tiff','Resolution',600) 

In my case, it will produce test.tiff image with a resolution of 3501x2626

[PRAGYA ARORA]

Thankyou for your reply, is there a way that I can get precisely 2464 * 2056 pixels. How do I modify the above code?

[Askic V]

If you really need a specific resolution, I guess this is the way to go:

figure;
xlim([0 2500]);
ylim([0 2056]);
set(gca,'YDir','reverse');
set(gca,'Units','normalized','Position',[0 0 1 1]);
hold on; x1=[]; y1=[]; x2=[]; y2=[]; u=[]; v=[];
x1=D4(:,1)
y1=D4(:,2)
x2=D4(:,3)
y2=D4(:,4)
u=x2-x1;
v=y2-y1;
q = quiver(x1,y1,u,v,'k', 'linewidth',5);
q.ShowArrowHead = 'off';
q.Marker = 'none';
% The preferred way is to use exportgraphics

output_size = [2464, 2056];%Size in pixels
resolution = 300;%Resolution in DPI
set(gcf,'paperunits','inches','paperposition',[0 0 output_size/resolution]);
% use 300 DPI
print('test','-dtiff',['-r' num2str(resolution)]);

[PRAGYA ARORA]

Thankyou it works well.