3Dplot suggestions on azimuthal data

Hi,

I never used 3D plot in Matlab. I will like to plot in 3D, the data from the the attached file. I was trying in Excel and the results is

not very good. I would like to have some sugestions how to use mesh here.

Thank you,

Ionut

Answer 1

[Adam Danz]

There are lots of 3D plots. Here are two examples using a 3D bar plot and a 3D surface.

data = [ 45	33	25	60	32	34	50	9
    5	61	17	71	18	7	7	6
    37	41	20	19	20	47	27	20
    8	8	9	11	11	10	9	8];
col = 0:45:315; 
rows = {'Low','Mid','Upp','Out'}';

figure()
bar3(data)
set(gca, 'XTick', 1:size(data,2), 'XTickLabel',compose('%g',col), ...
    'YTick',1:size(data,1), 'YTickLabel',rows);
xlabel('Azimuth (deg)')
ylabel('level')
zlabel('value')

figure()
surf(col,1:size(data,1),data)
colormap(gca,'gray')
set(gca, 'XTick',col, 'YTick',1:size(data,1), 'YTickLabel',rows);
xlabel('Azimuth (deg)')
ylabel('level')
zlabel('value')

[Ionut Anghel]

Very nice solutions!

They are working perfect.

Thank you.

Answer 2

[Bjorn Gustavsson]

You seem to have your x and y-coordinate values along the first row and column of the data. If so:

x = test(1,2:end);
y = test(2:end,1);
z = test(2:end,2:end);

Then you can plot with surf or mesh:

subplot(2,2,1)
surf(x,y,z)
subplot(2,2,2)
mesh(x,y,z)

Or you can use scatter or scatter3:

subplot(2,2,3)
scatter(x(:),y(:),32,z(:),'filled')
subplot(2,2,4)
scatter3(x(:),y(:),z(:),32,z(:),'filled')

Then you can play around with the other plotting-functions too...

HTH

[Ionut Anghel]

Your answwer is very good as well. I had to arrange the vectors. Matlab doesn't allowed me to accept both answers.

Thank you.