MATLAB: How to solve this issue :Error: File: FormatDataNew.m Line: 1 Column: 59 Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parenthe

invalid expression

the error seems to come from this line:

function [dat_AP,Amp_AP,Ph_AP,Fs_AP,TD_P] = FormatDataNew('moh.txt')

please explain what could be the problem.

Best Answer

This appears to be your function declaration line. If so, appear to have declared it using the calling syntax. You should replace 'moh.txt' with a variable name (no quotes).

function [dat_AP,Amp_AP,Ph_AP,Fs_AP,TD_P] = FormatDataNew(file)

Then in your script when you call your function, that is when you use the actual file name.

[dat_AP,Amp_AP,Ph_AP,Fs_AP,TD_P] = FormatDataNew('moh.txt');

See this page for more on declaring functions.

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Connected lines 
x=-1:0.01:1;
y(x>=-1 & x<0)=-1-x(x>=-1 & x<0);
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plot(x,y)

Alternative, not connected lines

x1=-1:0.01:0-0.01;
x2=0:0.01:1;
y1(x1>=-1 & x1<0)=-1-x1(x1>=-1 & x1<0);
y2(x2>=0 & x2<=1)=1-x2(x2>=0 & x2<=1);
plot(x1,y1)
hold on
plot(x2,y2,'r')

Best Answer

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MATLAB: Discontinuity missing.

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