How to save an image using its URL

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Arthur Melo 2014-10-16

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https://ww2.mathworks.cn/matlabcentral/answers/158939-how-to-save-an-image-using-its-url

评论： Augusto Gabriel da Costa Pereira 2022-11-11

采纳的回答： matt dash

I did this steps and it didn't worked!

url_img =

http://satelite.cptec.inpe.br/repositorio7/goes13_met10/goes13_met10_web/ams_afc_alta_jpg/2014/10/S11185873_201410150000.jpg

name_file_img =

20141015-00:00.jpg

>> urlwrite(url_img, name_file_img); Error using urlreadwrite>getFileOutputStream (line 245) Could not open output file "C:\Users\Albm\Documents\MATLAB\2014\10\15\2014\10\15\2014\10\15\2014\10\15\20141015-00:00.jpg".

Error in urlreadwrite (line 69) [file,outputStream] = getFileOutputStream(inputs.filename);

Error in urlwrite (line 38) [f,status] = urlreadwrite(mfilename,catchErrors,url,filename,varargin{:});

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matt dash 2014-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/158939-how-to-save-an-image-using-its-url#answer_155466

You just can't have a colon in a file name, that's all.

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Star Strider 2014-10-17

Good pick-up!

I completely overlooked that.

Arthur Melo 2014-10-17

Thanks everybody and sorry, but matt dash gave me the perfect answer, some times we forget too basics things. I don't know why. Thank you matt, now I have no problem.

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Image Analyst 2014-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/158939-how-to-save-an-image-using-its-url#answer_155459

You need to use imwrite() if you want to save an image, not urlwrite().

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Image Analyst 2022-2-11

在 MATLAB Online 中打开

@Mykola Ponomarenko

To get no additional losses, use PNG format

imwrite(rgbImage, 'satellite image.png');

Can you show an example of how you'd save your image array with urlwrite()? The documentation only shows how to save web pages as HTML format, not how to save image data in PNG format.