Make a plt from a 4-D multi array variable from nc file

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Pepe Grillo 2020-6-17

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https://ww2.mathworks.cn/matlabcentral/answers/549756-make-a-plt-from-a-4-d-multi-array-variable-from-nc-file

评论： Pepe Grillo 2020-6-17

采纳的回答： KSSV

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I have a nc file with:

Dimensions:

time = 8

depth = 48

latitude = 109

longitude = 25

and make this:

u='global-reanalysis-phy-001-030-daily_1591804259623.nc'
ncdisp(u)
east = ncread(u,'uo'); 
lat = ncread(u,'latitude'); 
lon = ncread(u,'longitude');
time=ncread(u, 'time');
depth=ncread(u, 'depth');
dtime = datetime(1950, 1, 1, time, 0, 0);
jd=juliandate(dtime);
plot(lat, east(:,:,15,1));

east is a 4-D 8371200 double

But I want a plot (surfc) in time, this 8 days, latitude, one depth (lets say 48, the last) and the east variable that is a velocity m/s.

Any idea? What I should do with east variable? squeeze, quiver, etc realy dont know or find solution

Thanks.

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KSSV 2020-6-17

OP commented:

the plot(lat, east(:,:,15,1)) is working but only for one day if I change 1 for : then the error

Data cannot have more than 2 dimensions.

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采纳的回答

KSSV 2020-6-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/549756-make-a-plt-from-a-4-d-multi-array-variable-from-nc-file#answer_452454

编辑：KSSV 2020-6-17

在 MATLAB Online 中打开

ncfile = "global-reanalysis-phy-001-030-daily_1591804259623.nc";
time = ncread(ncfile,'time') ; 
depth = ncread(ncfile,'depth') ; 
lat = ncread(ncfile,'latitude') ;
lon = ncread(ncfile,'longitude') ; 
u = ncread(ncfile,'uo') ; 
% plots 
for i = 1:length(time)  % time loop
  for j = 1:length(depth) % depth loop
    z = u(:,:,j,i)' ;  % extract the matrix here 
    pcolor(lon,lat,z) ;
    colorbar
    shading interp
    xlabel('lon')
    ylabel('lat')
    title(sprintf('time = %d, depth = %d',i,j))
    drawnow
 end
end