Index exceeds matrix dimensions. (loading datas)

Hello guys, Currently, i try to load multiple of data into MATLAB. The input.csv consists of 100 rows and 9 column integer value (positive and negative). I keep get this error for line one = strncmpi {C{10} , 'one' , 3}; Really appreciate if you guys can help me since i'm a beginner to MATLAB.

fid = fopen ('D:\MATLAB\R2010b\Japanese\input.csv');

C = textscan(fid,'%f%f%f%f%f%f%f%f%f','delimiter' , ',');
fclose(fid);

input = [C{1} C{2}  C{3} C{4} C{5} C{6} C{7} C{8} C{9}];

one    = strncmpi {C{10} , 'one' , 3};
two    = strncmpi {C{10} , 'two' , 3};
three  = strncmpi {C{10} , 'three' , 5};
four   = strncmpi {C{10} , 'four' , 4};
five   = strncmpi {C{10} , 'five' , 4};
six    = strncmpi {C{10} , 'six' , 3};
seven  = strncmpi {C{10} , 'seven' , 5};
eight  = strncmpi {C{10} , 'eight' , 5};
nine   = strncmpi {C{10} , 'nine' , 4};
ten    = strncmpi {C{10} , 'ten' , 3};

target = double ([one two three four five six seven eight nine    ten]);

input = input';
target = target';

Thank You Ariana

Answer 1

[Bengt-Arne]

There is only 9 "%f%f%f%f%f%f%f%f%f" in C = textscan(fid,'%f%f%f%f%f%f%f%f%f','delimiter' , ','); fclose(fid);

Add one more %f=).

[Lee Ariana]

Thanks Bengt-Arne

Wasn't that '%f%f%f%f%f%f%f%f%f' represent 9 floating number in my input.csv?

i did add one more %f but the i've got another error

??? Undefined variable "strncmpi" or class "strncmpi".

Error in ==> newff at 13 one = strncmpi {C{10} , 'one' , 3};

[Walter Roberson]

strncmpi(C{10},'one',3);

Notice the use of () rather than {}

Answer 2

[Fangjun Jiang]

You have 9 columns of data so I assume the resulting C is a 1x9 cell array. You don't have C{10}. That is what the error message is about.

[Lee Ariana]

Thanks Fangjun Jiang to identify the problem.

Answer 3

[Ora Zyto]

Ariana,

If your data import worked correctly, your cell C should be a 1x9 cell array, with each cell being a 100x1 double array.

Therefore, C{10} is not defined, since this would be cell #10 of C.

Also, strncmpi is a string comparison function. What are you trying to achieve with this functionality?

Finally, if you're working with comma-separated file, you may want to use CSVREAD instead: this will get you a matrix of numbers directly, without having to deal with the cell array.

Ora

[Lee Ariana]

Thanks Ora Zyto,

Actually i'm develop a language translator (signal processing) by using LPC and ANN. There is no problem by using ANN toolbox but i want to try the coding method.

I want to load 100 of wave file into my MATLAB project and each row consists of 9 column of value generate by LPC function.

So now, input is 100 x 9 cell array , C is 1 x9 cell array and fid is 3.

However, i'm having problem to load the data into my MATLAB environment. I'm using MATLAB vR2010b and a beginner.

Really appreciate your help.

Thanks

Ariana

[Ora Zyto]

Ariana,

I don't understand where you are having issues. Your current workflow through:

input = [C{1} C{2} C{3} C{4} C{5} C{6} C{7} C{8} C{9}];

should generate a 100 x 9 matrix.

I was suggesting replacing all those lines (from fopen) by:

input = csvread('D:\MATLAB\R2010b\Japanese\input.csv');

If you are having other difficulties with your data, please explain exactly what the issue is.