Error with import data in txt format while generating function

Question

theintern 2017-11-17

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https://ww2.mathworks.cn/matlabcentral/answers/367589-error-with-import-data-in-txt-format-while-generating-function

评论： theintern 2017-11-20

Hey everybody,

I have a data in txt format includes numbers. I apply following steps, because I don't want to import data each time and I want to use this function in my script:

Home>Import Data>Import Selection>Generate Function

then, Matlab auto-generates me the function.

function Untitled1 = importfile('1.txt');
%IMPORTFILE Import numeric data from a text file as a matrix.
%   UNTITLED1 = IMPORTFILE(FILENAME) Reads data from text file FILENAME for
%   the default selection.
%
%   UNTITLED1 = IMPORTFILE(FILENAME, STARTROW, ENDROW) Reads data from rows
%   STARTROW through ENDROW of text file FILENAME.
%
% Example:
%   Untitled1 = importfile('1.txt', 1, 200001)
%
%    See also TEXTSCAN.
% Auto-generated by MATLAB on 2017/11/17 10:47:41

But it gives me that error:

>> importfile Error: File: importfile.m Line: 1 Column: 33 Unexpected MATLAB expression.

Coloumn:33 is after first paranthesis and before ' sign.

What is the problem?

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Answer 1

Rik 2017-11-17

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https://ww2.mathworks.cn/matlabcentral/answers/367589-error-with-import-data-in-txt-format-while-generating-function#answer_291726

在 MATLAB Online 中打开

The problem is that the input argument name should not be a string. Either call the function with that as the input argument, or hard-code this filename.

%replace this:
function Untitled1 = importfile('1.txt')
%with either this:
function Untitled1 = importfile(filename)
%or this:
function Untitled1 = importfile
filename='1.txt';