Loading a text file with strings and numbers
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I am trying to load in a txt file that has strings and numbers. The attached text file is organized with 1 column and 5 rows containing “a 2 t 1.5 n”. The only number is “1.5” with the rest being strings.
I need the code to store each item as a separate variable. For example variable 1 = a, variable 2 = 2, variable 3 = t ect.
Any help would be greatly appreciated.
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Adam Danz
2020년 1월 13일
"The only number is “1.5”..."
I see a 2 in there, too.
답변 (1개)
"The only number is “1.5”..."
I see a 2 in there, too.
"I need the code to store each item as a separate variable."
That would require dynamic variable naming which is a bad practice that results in additional problems. See https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
A better solution it to store the values in a cell array that you can reference by indexing.
The first line reads in the text file as a cell array of character vectors.
The second line converts any character vectors that are numeric to numeric values.
c = strsplit(fileread('Test.txt')).';
c(~isnan(cellfun(@str2double,c))) = num2cell(str2double(c(~isnan(cellfun(@str2double,c)))));
Now you can access the n-th value by indexing
c{n}
댓글 수: 4
Adam Bosco
2020년 1월 13일
Adam Danz
2020년 1월 13일
Hmmm, how will Matlab know which elements to convert to numeric? Or, are you keeping all elements as strings or char-arrays? If that's what you're doing, you'll only need the first line of my answer.
Does this solve the problem for you?
Adam Bosco
2020년 1월 13일
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