xlim and ylim for contourf

I need to add limits for the extent of where data was collected on a model. ie. the model goes from 0-900 but we only took measurements from 40-870 or something. I want the plot to show the full model dimensions.

I'm using contour plots. I have tried using xlim and ylim but it will only work for one or the other, depending where they appear in the code. I can't get it to use both.

subplot(1,4,1);
pressure_values = data_means(faces.front.tap_number);
faces.front.pressure = pressure_values;

x_size = length(unique(faces.front.x));
y_size = length(unique(faces.front.y));
z_size = length(unique(faces.front.z));

x_mesh = squeeze(reshape(faces.front.x,x_size,y_size,z_size));
y_mesh = squeeze(reshape(faces.front.y,x_size,y_size,z_size));
z_mesh = squeeze(reshape(faces.front.z,x_size,y_size,z_size));
pressure_mesh = squeeze(reshape(faces.front.pressure,x_size,y_size,z_size));

contourf(x_mesh, z_mesh, pressure_mesh,25,':');
colormap(gca,'jet')
hcb1 = colorbar;
title('FRONT');

ylim([0,900]);
xlim([-112.5,112.5]);
caxis(clims);
axis equal

Thanks!

Answer 1

[Raunak Gupta]

Hi,

The axis equal command after xlim and ylim squeezes one of the axis limits to fit the figure box into minimum space. This happens due to PlotBoxAspectRatioMode being set to auto by default and it has stretch to fill inbuilt property. To get out of this expected behavior you can replace the order of axis and xlim/ylim commands. Last four lines of your code can be replaced as follows:

axis equal 
ylim([0,900]); 
xlim([-112.5,112.5]); 
caxis(clims); 

[Alli Whalley]

That's great, thank you!