How to gather data from weather forecast?

Question

Fernando Penaherrera 2018-9-4

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https://ww2.mathworks.cn/matlabcentral/answers/417426-how-to-gather-data-from-weather-forecast

评论： Saleh 2020-9-1

Hi!

I am developing a script which uses outside temperature as input for a calculation of ventilation requirements in a house.

I wanted to use data from a weather forecast website. How can I make a script to read and save the Temperature data from tomorrow or next week?

For example, how do I get a table with this data?

https://www.google.de/search?q=quito+temperatura&rlz=1C1CHBF_deDE773DE773&oq=quito+temperatura&aqs=chrome..69i57j0l5.2527j1j4&sourceid=chrome&ie=UTF-8

Thanks in advance.

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Answer 1

Nikilesh Chilkuru 2018-9-6

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https://ww2.mathworks.cn/matlabcentral/answers/417426-how-to-gather-data-from-weather-forecast#answer_335736

编辑：Nikilesh Chilkuru 2018-9-7

在 MATLAB Online 中打开

Google Uses Weather Underground API to provide current weather information. They stopped issuing free API keys which you can use in your applications. You can search for public API's that provide weather data. One of them is Weather API provided by OpenWeatherMap. You can browse to the link provided below and signup for the account and you can generate keys.

https://openweathermap.org/api

After generating the API key you can use them in your application and make calls to this API providing query parameters using MATLAB function "webread". To get more information on how to use function "webread" refer:

https://www.mathworks.com/help/matlab/ref/webread.html

I am providing a simple example of using "webread" with OpenWeatherMap API.

key = 'YOUR_API_KEY';
options = weboptions('ContentType','json');
url = ['https://api.openweathermap.org/data/2.5/weather?q=', 'London','&APPID=',key];
Current_Data = webread(url, options);

You can browse through API doc and get familiar with how to use it depending on your requirements. Also, you can use other public weather API's as well depending on which one you feel suits your application the best. But the procedure to read from an API would be the same.

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Xinran Wan 2019-4-29

Thanks so much!! It actually works:))

Saleh 2020-9-1

Hello; I have used your code and it works for me in this case:

url = ['https://api.openweathermap.org/data/2.5/onecall?lat=32.871105&lon=51.390099&appid=' ,key];

Current_Data = webread(url, options);

my question is for some latitude and longitude the recieved data is in cell format and for some is in struct format, could you please tell me the reason and how can I recieve all them in struct format?

Thanks in advance

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