How to enter a numeric matrix published on the web page https://esc113.blogspot.com/2022/11/data.html

Question

Vasiliy Znamenskiy 2022-11-29

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1866213-how-to-enter-a-numeric-matrix-published-on-the-web-page-https-esc113-blogspot-com-2022-11-data-htm

回答： Sarthak 2023-3-20

I found how to enter a number matrix posted on the web page https://esc113.blogspot.com/2022/11/data.html.

See my code:

url = 'https://esc113.blogspot.com/2022/11/data.html';
a= webread(url);
b= extractHTMLText(a);
fID=fopen("abc.txt",'wt');
fprintf(fID,"%s",b);
fclose(fID);
fID=fopen("abc.txt",'rt');
tline = fgets(fID);
tline = fgets(fID);
tline = fgets(fID);
tline = fgets(fID);
for i=1:20
tline = fgets(fID);
A(i,:)=sscanf(tline,'%g');
end
A
A = 20×10
    0.7630    1.0383    0.5844    1.3693    0.7399    0.8377    1.4421    1.1491    0.8685    1.0085
    1.1541    1.4961    0.8998    1.0797    0.6233    1.4001    1.4561    1.2317    1.1256    1.0108
    1.1892    0.5782    0.7599    1.0499    0.6839    0.8692    1.0752    1.1477    1.2802    1.3176
    1.2482    0.9427    1.3001    0.6450    0.7400    0.6112    0.5598    0.9509    0.5811    1.2948
    0.9505    0.6067    0.9314    1.3530    0.9173    1.2803    0.7348    1.0470    1.4294    1.1443
    0.5838    1.4619    1.4106    1.1221    0.5497    0.8897    0.8532    0.7963    1.2757    0.8786
    0.7290    0.5046    0.6818    0.8510    1.4027    0.7417    1.3212    1.2447    0.9868    1.3116
    1.4133    1.2749    0.7638    1.0132    1.4448    0.9039    0.5154    0.6890    0.9359    1.0328
    0.6524    1.3173    0.6455    0.9018    0.9909    0.5965    0.5430    1.1868    0.9468    0.8507
    1.3258    1.3687    0.6361    0.5760    0.9893    0.6320    0.6690    0.6835    0.8063    1.4390

But I think my solution is to mach complicated and not universal.

Can somebody show me shorter solution?

Thank you.

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Answer 1

Sarthak 2023-3-20

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https://ww2.mathworks.cn/matlabcentral/answers/1866213-how-to-enter-a-numeric-matrix-published-on-the-web-page-https-esc113-blogspot-com-2022-11-data-htm#answer_1196440

在 MATLAB Online 中打开

Hi Vasiliy,

MATLAB offers inbuilt functions for text parsing and extractions. You can find elements from the html tree of your webpage.

url = 'https://esc113.blogspot.com/2022/11/data.html'; 
a= webread(url); 
% Generate HTML tree 
tree = htmlTree(a) 
% Find required element using css selectors 
element = findElement(tree, '.post-body'); 
% Extract text from the element 
str = extractHTMLText(element); 