MATLAB: How to download multiple data files at once using matlab

MATLABwebsave

I need to call on a website and download data for each and every day for the month of july. Im curious what command or format can help me do this. For example this is the code to retrieve 1 day of the year.
filename='weather_data_2019_255.txt';
if isfile(filename)
fprintf('already have the file |%s|\n',filename);
else
url='http://www.weather.unh.edu/data/2019/255.txt';
outname=websave(filename,url);
fprintf('got weather data file |%s|\n',outname);
end
How can i change the filename to allow me to download filename='weather_data_2019_(182-212).txt. I'm assuming I need to create a start date and a end date and create an output filename. May someone teach me how I can do this. Thank you very much.

Best Answer

Try this. I also put where you could change year also.
year = 2019;
start_jd = 182;
end_jd = 212;
for jd = start_jd:end_jd
    filename=['weather_data_' num2str(year) '_' num2str(jd) '.txt'];
    if isfile(filename)
        fprintf('already have the file |%s|\n',filename);
    else
        url=['http://www.weather.unh.edu/data/' num2str(year) '/' num2str(jd) '.txt'];
        outname=websave(filename,url);
        fprintf('got weather data file |%s|\n',outname);
    end
    
end
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