...
figure(1); %Create figure #1
clf; %Clear current figure
h=plot(,,'');
set(gca,'Box','on','LineWidth',2,...
'FontName','Helvetica',...
'FontSize',14);
%Set axis properties
set(h,'LineWidth',2);
%Set linewidth for curve
xlabel('');
ylabel('');
title('');
axis square; %Make axis box square