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

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.

Answer 1

[Sarthak]

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)