How to make the color bar the same color when it is the same variable in two different pictures

figure(1)

set(gcf, 'color', 'w', 'Units', 'Normalized', 'OuterPosition', [0.1 0.1 0.8 0.5]);

subplot(1,2,1)

contourf(lon_97_1,lat_97_1,ssta_97_1,'linecolor','k')

colorbar

xlabel('Longitude(^o)');

ylabel('Latitude(^o)');

subplot(1,2,2)

contourf(lon_00_1,lat_00_1,ssta_00_1,'linecolor','k')

colorbar

xlabel('Longitude(^o)');

ylabel('Latitude(^o)');

I want to know how to make variables have the same color when they represent the same value

Answer 1

[Pratheek]

In this modified code, we are first using the min and max methods to find the ssta variable's minimum and maximum values, across both datasets. The colour limits for both colour bars are then set to these minimum and maximum values using the caxis function. By doing this, the colour scale for both colour bars can be maintained.

figure(1) 
set(gcf, 'color', 'w', 'Units', 'Normalized', 'OuterPosition', [0.1 0.1 0.8 0.5]); 


% Determine the maximum and minimum values of the ssta variable in both datasets 
caxis_min = min([min(ssta_97_1(:)), min(ssta_00_1(:))]); 
caxis_max = max([max(ssta_97_1(:)), max(ssta_00_1(:))]); 

subplot(1,2,1) 
contourf(lon_97_1,lat_97_1,ssta_97_1,'linecolor','k') 
colorbar 
caxis([caxis_min, caxis_max]); % Set the color limits for the first color bar 
xlabel('Longitude(^o)'); 
ylabel('Latitude(^o)'); 
 
subplot(1,2,2) 
contourf(lon_00_1,lat_00_1,ssta_00_1,'linecolor','k') 
colorbar 
caxis([caxis_min, caxis_max]); % Set the color limits for the second color bar 
xlabel('Longitude(^o)'); 
ylabel('Latitude(^o)');