My code does not work properly

Question

Behrooz Daneshian 2023-1-5

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https://ww2.mathworks.cn/matlabcentral/answers/1889162-my-code-does-not-work-properly

回答： the cyclist 2023-1-6

Hi all,

Using the code below I am supposed to extract daily temperature from NOAA database for a desired year range(e.g. 2006 to 2010). When I examined the created table(annualTemperatureData) in which dates as well as corresponding tempretaures exist, I realized that when a year is changing(e.g. form the date of '2006-12-31' to '2007-01-01'), the next year does not start from January 1,instead it begins with 28 February! I checked the code several times but I do not know why I do not get the right answer. Can anyone help me with this regard?

getdata function is from the MATLAB Interface for NOAA Data. Please see this link: https://www.mathworks.com/matlabcentral/fileexchange/119213-matlab-interface-for-noaa-data

clear
close all
clc
n = noaa("dHsFHwpJjKwcKvgEWfcwoUmzbqYrdGCc");
annualTemperatureData = [];
for y = 2006:2010
    annualTemperatureData = [annualTemperatureData;getdata(n,"GHCND", ...
        datetime(strcat(num2str(y),"-01-01")), ... 
        datetime(strcat(num2str(y),"-12-31")), ...
        stationid  = "GHCND:USW00063857", ...
        datatypeid = "TAVG", ...
        datatypeid = "TMIN", ...
        datatypeid = "TMAX", ...
        limit      = 1000, ...
        units      = "standard")]; 
end

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Behrooz Daneshian 2023-1-6

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Even if we try the code below just for a one year(without using getdata function), data does not start from January!

myToken = "dHsFHwpJjKwcKvgEWfcwoUmzbqYrdGCc";
Initial_URL = "https://www.ncei.noaa.gov/cdo-web/api/v2/data?datasetid=GHCND&stationid=GHCND:SPE00119783&startdate=2006-01-01&enddate=2010-12-31&limit=1000&datatypeid=TAVG";
opt = weboptions('KeyName','token','KeyValue',myToken);
Data=webread(Initial_URL,opt);  

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Answer 1

the cyclist 2023-1-6

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1889162-my-code-does-not-work-properly#answer_1142517

My best guess is that this is a problem at the source, and not with your code. I used curl directly against the API (as we have discussed your previous questions), for a smaller segment of data, and fails to pull the same time period.

curl -H 'token:dHsFHwpJjKwcKvgEWfcwoUmzbqYrdGCc' 'https://www.ncei.noaa.gov/cdo-web/api/v2/data?datasetid=GHCND&stationid=GHCND:USW00063857&datatypeid=TMIN,TMAX&startdate=2006-01-01&enddate=2006-03-31'