my netcdf.open can not open the url I want ;help!!!!!​!!!!!!!!!!​!!!!!!!!!!​!!!!!!!!!!​!

1 次查看（过去 30 天）
guanhao
guanhao 2024-5-16
评论： guanhao 2024-5-17
error:
...
READDAP_New: did not work at 98 try: lets try again.
READDAP_New: did not work at 99 try: lets try again.
READDAP_New: did not work at 100 try: lets try again.
READDAP_New: did not work at 101 try: lets try again.
错误使用 readdap (line 45)
READDAP_New: repeated failures after 100 queries
出错 get_ECCO_subgrid (line 45)
lon=readdap(path,'LONGITUDE_T',[]);
出错 download_ECCO (line 65)
get_ECCO_subgrid(fname,lonmin,lonmax,latmin,latmax);
出错 make_OGCM (line 122)
eval(['download_',OGCM,'(Ymin,Ymax,Mmin,Mmax,lonmin,lonmax,latmin,latmax,',...
readdap (line 45):
if nargin <2
disp(['not engough input argments']);
elseif nargin <3 || isempty(query)
disp(['READDAP_New: Extract : ', varname])
while isempty(data)
if ntry>nmax
error(['READDAP_New: repeated failures after ',num2str(nmax),' queries'])
end
ntry=ntry+1;
try
ncid = netcdf.open ( url,'NOWRITE' );
varid = netcdf.inqVarID(ncid,varname);
data = netcdf.getVar(ncid,varid,'double');
netcdf.close (ncid);
catch
data=[];
disp(['READDAP_New: did not work at ',num2str(ntry),' try: lets try again.'])
end
end
else
.......
the problem:
  2 个评论
Walter Roberson
Walter Roberson 2024-5-16
Please post the URL as plain text so we can experiment with it.
guanhao
guanhao 2024-5-16
url = 'http://apdrc.soest.hawaii.edu/thredds/dodsC/las/ecco2_cube92/data_apdrc.soest.hawaii.edu_dods_public_data_ECCO_ECCO2_cube92_'
Thanks! my friend!!!!!

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

R
R 2024-5-17
Ran in:
The error occurred because the URL provided is not a valid OPenDAP URL. When the NETCDF-C library encounters a path resembling a URL and lacks additional information, it interprets it as an OPenDAP request.
To address this, you will need to determine the correct OPenDAP URL. The best way to do this is to find the thredds catalog entry for the file and see if the proper OPenDAP URL is listed on that page. You can access the desired dataset via the link below and select the OPENDAP URL to resolve the error:
https://apdrc.soest.hawaii.edu/thredds/catalog/las/ecco2_cube92/catalog.html
I tried a few examples from the list and it worked:
ncid = netcdf.open('http://apdrc.soest.hawaii.edu//thredds/dodsC/las/ecco2_cube92/data_apdrc.soest.hawaii.edu_dods_public_data_ECCO_ECCO2_cube92_monthly_mxldepth.jnl','NOWRITE')
ncid = 65536

类别

在 Help Center 和 File Exchange 中查找有关 NetCDF Files 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by