How to read formatted data containing spaces in matlab using textscan function-Computer Knowledge-php.cn

How to read formatted data containing spaces in matlab using textscan function

1. How does textscan in MATLAB read formats containing spaces?

In MATLAB, if you want to use thetextscanfunction to read the format containing spaces, you can use the format specifier%qto read the quoted format String, where spaces are preserved. The following is a simple example:

fid = fopen('example.txt', 'r'); data = textscan(fid, '%s %s', 'Delimiter', ','); fclose(fid); % 输出读取到的数据 disp(data);

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In the above example, assume that the fileexample.txtcontains the following content:

str = 'Hello World'; parts = strsplit(str, ' '); disp(parts);

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2.Use the index to get the substring:

str = 'MATLAB'; sub = str(2:4); disp(sub);

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3.Use thestrrepfunction to replace the content in the string:

str = 'apple orange apple'; newStr = strrep(str, 'apple', 'banana'); disp(newStr);

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4.Use regular expression to replace:

str = 'The quick brown fox'; newStr = regexprep(str, 'brown', 'red'); disp(newStr);

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5.UsesprintfFunction format string:

name = 'John'; age = 25; formattedStr = sprintf('Name: %s, Age: %d', name, age); disp(formattedStr);

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Summary:

(1) in MATLAB When using thetextscanfunction to read a format containing spaces, you can use%qto read a quoted string, retaining spaces.
(2) String splitting and modification can usestrsplit, index to obtain substrings,strrepfunction replacement, regular expressions Replacement,sprintffunction formatting and other methods, choose the appropriate operation according to specific needs.

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