MATLAB Answers

I am using contour with a color bar. The axis are not equal sizes.

1 view (last 30 days)
figure
%plotting the contour
contourf(x*2.54,y*2.54,pdata(j).k,64,'linecolor','none')
%setting color range
colormap('jet')
%allowing colorbar to be manipulated
cbar = colorbar('peer', gca);
%setting colorbar label
cbar.Label.String = 'Mach Number';
%setting axii labels
xlabel('r [cm]')
ylabel('r [cm]')
%putting a scatter plot onto the contour
hold on
set(gca,'FontSize', fontsize);
scatter(xxxx2*2.54,yyyy2*2.54,[],'k')
st_fig_range = caxis;
%setting colorbar ranges
caxis([st_fig_range(1) st_fig_range(1)+1]);
cbar.XTick=[round(st_fig_range(1),2):0.1:round(st_fig_range(1),2)+1];
end
%attempting to make axis square
axis square
%saving figure
print(gcf,[figpath,Reynoldsrange,...
sprintf('/ContourM%.0fz%.0f', machnumber,j) ],'-depsc','-loose')
So here is my code, hopefully these comments make sense. This is embedded in some research code I have been working on for several years so it may not be the cleanest, but it generally works really well. I am by no means an expert in Matlab, but I am happy with the codes efficiency (or lack there of). Mostly, the 'axis square' command isnt working.
Due to the colorbar, the axis arent completely square. The plot is slightly taller than it is long. I need to automate this because of how many figures I am producing. Is there a method, brute force or otherwise, that would make this work?
I would love some help! Thanks!

  2 Comments

Erik Hoberg
Erik Hoberg on 7 Oct 2020
This has the same result as axis square This is just slightly not square, even with the command positioned below all the labels and color bar. Is there a brute force way to define like the number of pixels or something in the figure Frame window?

Sign in to comment.

Accepted Answer

Kiran Felix Robert
Kiran Felix Robert on 9 Oct 2020
Hi Erik,
If axis square and axis equal results are not what you expect, you can manually set the axis sizes in a figure you can use the set function with the axes handle. The following code demonstrates it.
x = linspace(-2*pi,2*pi);
y = linspace(0,4*pi);
[X,Y] = meshgrid(x,y);
Z = sin(X) + cos(Y);
contourf(X,Y,Z,10)
cbar = colorbar(gca);
Ax = gca;
set(Ax,'Units','pixels','Position',[10 10 200 200])
You can also refer to this answer regarding the units.
Kiran Felix Robert

  1 Comment

Erik Hoberg
Erik Hoberg on 13 Oct 2020
This worked great! Thank you for your help. I was able to drop this command into my code and play with the numbers until the axiis squared up.

Sign in to comment.

More Answers (0)

Products


Release

R2020a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!