Are the NCTOOLBOX commands slow or am I doing something inefficient?

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Edward Strobach 2017-9-20

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https://ww2.mathworks.cn/matlabcentral/answers/357575-are-the-nctoolbox-commands-slow-or-am-i-doing-something-inefficient

关闭： MATLAB Answer Bot 2021-8-20

GFS_Grib2_import.m

Hello,

I've been using various methods for extracting data without downloading for a while now using OPENDaP. For grib2 files I use the nctoolbox to read the data in. I've noticed that all the commands (i.e. nc.geodataset(url), nc.geovariable, etc.) seem really slow when it comes to extracting the data. I'll provide my code below so that you can see the commands where I've highlighted it being slow. Perhaps it is the execution of the command, the extraction of data from the internet, or something else I'm missing. Any thoughts? I attached the code rather than copying it into the message window since it didn't look reader friendly, even after using the code button on the toolbar. I even tried parallel computing options but would rather be as efficient as possible, if possible. Thanks in advance.

Edward Strobach