How do I read a specific string and numerical value from a .txt file and use each one for calculation?

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John 2014-2-24

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评论： Image Analyst 2014-2-24

采纳的回答： Azzi Abdelmalek

So I have .txt file that has the following information:

NameA 1999 50

NameB 2005 75

NameC 1987 86

...

The name, the year, and the number are separated by a tab I am supposed to write a script that would read the above information into MatLAB, use the number in the 3rd column for some calculation, and then display the name, year, and the calculated value in 3 columns onto the command window.

How do I even target the numbers in the 3rd columns?

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Answer 1

Azzi Abdelmalek 2014-2-24

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https://ww2.mathworks.cn/matlabcentral/answers/118910-how-do-i-read-a-specific-string-and-numerical-value-from-a-txt-file-and-use-each-one-for-calculatio#answer_125973

在 MATLAB Online 中打开

im=importdata('file.txt')
num=im.data
c2=num(:,1)  % second column
c3=num(:,2)  % third column
texte=im.textdata  % first column

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John 2014-2-24

I'm at the part where I have to print some information with the following format:

fprintf('company %s founded in %d has an income of %f, NameA, Year, Income)

I used the sscanf to break down the 2nd and 3rd column so that I could target each individual year and each individual income.

However, for the 1st column, I couldn't use sscanf to break it downn into single elements since it is composed of String.

How do I do that?

Image Analyst 2014-2-24

I'm not sure of the problem. It's a string and you want a string and you put %s in the sscanf() statement for it, so what's going wrong? Show you sscanf() statement, because it sounds fine to me.

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