How to set eact part as the same size in the subplot ?

Just like the figure, I want to set the same size of each part.

To control the width and length of subplot.

[Rik]

What have you tried so far?

[wenhao yang]

% plot figure 1

figure(1)

subplot(4,1,1);

title('General parameters');

plot(Z,TEMP,'-','linewidth',2);

ax = gca;

ax.YAxis(1).Exponent = 3;

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('T (K)')

xlim([0.0,0.5]);

ylim([1000,3000]);

set(gca,'YTick',[1000:500:3000]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

subplot(4,1,2);

plot(Z,HEATR,'-','linewidth',2);

xtickformat('%.2f');

ytickformat('%.1f');

set(gca,'YTick',[-1e8:1e8:2e8]);

ylabel('HRR (W/m^3)')

xlim([0.0,0.5]);

ylim([-1e8,2e8]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

max(HEATR)

min(HEATR)

subplot(4,1,3)

plot(Z,NFI,'-','linewidth',2);

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('NFI')

xlim([0.0,0.5]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

subplot(4,1,4)

plot(Z,G,'-','linewidth',2);

hold on

x = [0 1];

y = [0.5 0.5];

plot(x,y,'linewidth',2)

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('G');

xlabel('Mixture fraction (-)')

xlim([0.0,0.5]);

ylim([0.0,1.0]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

set(gcf,'PaperUnits','centimeters');

% % set(gcf,'Position',[0.18 0.18 0.75 0.70]);

set(gcf,'PaperPosition',[1 10 20 20]);

print(gcf,'-r600','-dpng','general.png')

close all

[wenhao yang]

% plot figure 2

figure(2)

subplot(4,1,1)

% title('Reaction rate (g/m^3s)');

yyaxis left

plot(Z,Y_NH3,'-','linewidth',2);

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('Y_N_{H_3}')

xlim([0.0,0.5]);

ylim([0,1]);

yyaxis right

plot(Z,w_NH3/(1000*moleW_NH3),'-','linewidth',2);

ytickformat('%.1f');

ylabel('\omega_N_{H_3}')

xlim([0.0,0.5]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

subplot(4,1,2)

yyaxis left

plot(Z,Y_O2,'-','linewidth',2);

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('Y_{O_2}')

xlim([0.0,0.5]);

yyaxis right

plot(Z,w_O2/(1000*moleW_O2),'-','linewidth',2);

ytickformat('%.1f');

ylabel('\omega_{O_2}')

xlim([0.0,0.5]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

subplot(4,1,3)

yyaxis left

plot(Z,Y_NH,'-','linewidth',2);

ax = gca;

ax.YAxis(1).Exponent = -4;

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('Y_N_H')

yyaxis right

plot(Z,w_NH/(1000*moleW_H),'-','linewidth',2);

ax.YAxis(2).Exponent = 4;

ytickformat('%.1f');

ylabel('\omega_N_H')

xlim([0.0,0.5]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

subplot(4,1,4)

yyaxis left

plot(Z,Y_NH2,'-','linewidth',2);

ax = gca;

ax.YAxis(1).Exponent = -3;

xtickformat('%.2f');

ytickformat('%.1f');

ylabel('Y_N_{H_2}')

yyaxis right

plot(Z,w_NH2/(1000*moleW_NH2),'-','linewidth',2);

ax.YAxis(2).Exponent = 3;

xlabel('Mixture fraction (-)')

ytickformat('%.1f');

ylabel('\omega_N_{H_2}')

xlim([0.0,0.5]);

% 坐标轴字体

set(gca,'FontName','Times New Roman','FontSize',14);

% 坐标轴粗细

set(gca,'linewidth',1.5);

set(gcf,'PaperUnits','centimeters');

% set(gcf,'Position',[0.18 0.18 0.75 0.70]);

set(gcf,'PaperPosition',[1 10 20 20]);

print(gcf,'-r600','-dpng','r1.png')

close all

[wenhao yang]

I use these two commands to get two figures. However, they are not exactly the same in the size of each subplot. Their axises are not in the same position when I compare these two figures. The first one is a liitle bigger than the second one.

So, I wanna make the subplot size, widh and length exactly the same position.