Error using surf (line 71) Z must be a matrix, not a scalar or vector.

I got this error when i write this code;

file_nc = 'data.nc';

% see the description of the nc file using ncdisp

% example: ncdisp(file_nc)

% store the information in a struct

info_nc = ncinfo(file_nc);

sn = ncread(file_nc, 'south_north');

we = ncread(file_nc, 'west_east');

height_ws = ncread(file_nc, 'height');

ws = ncread(file_nc, 'wind_speed_mean');

[we_m , sn_m] = meshgrid(we,sn);

for i=1:length(height_ws)

figure

surf(we_m, sn_m, squeeze(ws(:,:,i))','EdgeColor', 'none')

title(strcat("Wind speed at ", num2str(height_ws(i)), " m"))

view(2)

c1 = colorbar;

c1.Title.String = 'U_{avg} [m/s]';

xlabel('Projected West-East [m]')

ylabel('Projected South-North [m]')

axis equal

axis tight

end

Error using surf (line 71)

Z must be a matrix, not a scalar or vector. The line 71 is "error(surfchk(dataargs{:}));"

Answer 1

[Torsten]

Before your loop insert the commands

size(squeeze(ws(:,:,1))')
size(we_m)
size(sn_m)

For surf to work, all sizes must be the same.

[Nihal]

Thank you for answering but I got the same error again when I did that.

[Torsten]

I told you that the output to the command window for these three values must be equal in order for "surf" to work without error. I did not claim that it solves your problem.

According to what three values you get, you will have to change your code. We cannot help you further because we don't know the content of your data file.