如何在Matlab函数中输入字符串

Question

I want to write a function that loads a text file and plots its content with time. I have 20 text files so I want to be able to choose from them.

My current not working code:

TextFile is a generic variable text123.txt is the actual name of one of the files i want to load

function []= PlotText(TextFile)


text(1,:)=load('text123.txt') ;

t=0:10;

plot(t,text)

end

I appreciate any help!!

Answer 1

use importdata instead of load with appropriate delimiter. I assume you used Tab.

filename = 'num.txt';
delimiterIn = '\t';
text = importdata(filename,delimiterIn)
t=1:10;
plot(t,text);

Answer 2

Firstly, you can also use dlmread if your file contains only numeric data separated by the same symbol (called a delimiter) such as a comma (,), semicolon (;), space ( ), or tab ( ). This would look like:

function []= PlotText(TextFile)


text(1,:)=dlmread('text123.txt');

t=0:10;

plot(t,text)

end

Keep in mind that your code is written in a way that expects the contents of text123.txt to have 11 values in a single row. Also, if you are using multiple files, then I suggest having the file name be another input to the function:

function []= PlotText(TextFile,filename)


text(1,:)=load(filename) ;

t=0:10;

plot(t,text)

end