How to enter a numeric matrix published on the web page https://es​c113.blogs​pot.com/20​22/11/data​.html

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Vasiliy Znamenskiy
Vasiliy Znamenskiy 2022-11-29
回答： Sarthak 2023-3-20
Ran in:
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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回答（1 个）

Sarthak
Sarthak 2023-3-20
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);
You can also refer to the following documentation.
Parse HTML and Extract Text Content - MATLAB & Simulink (mathworks.com)

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