make a matrix out of list

I have a file which has 4 words such as

mini

miny

milky

mouse

It could also be a file with more words, but one word per line.

I would like to after reading from the file, which might could be done with load('file.txt'); command,

make a matrix that is as long as I have words in this file.

so if I have 4 words, then the matrxi H shall be 4 rows long.

Is it a possibility?

[zahra hosaini]

hi

i think its possible

declare a parameter like i=1 (showing which row u are in)

make a loop to read all of your file and detecting the end of it as a break

make another loop inside of it for reading each line and detecting the end of it for break(i think it was parameter \0)

as u read the word in second loop put it in your matrix (use another parameter like j=1 for declaring your column and increase it each time you end the second loop)

increase i after getting out of the second loop to move to the next row

• there will be a warning saying that "your matrix dimention is changing each time you run the file", but thats something that we want and its ok
• also for your matrix column , u can set a fix number like 10(the longest world length that will be in your file)

Answer 1

[DGM]

It's not really clear if you want the contents of the file to be read into an array, or whether you just want a numeric (or other unspecified) array with the same size.

Assuming the first case:

fid = fopen('fruitwords.txt','r');
A = textscan(fid,'%s');
fclose(fid);

A{:}

ans = 6×1 cell array
    {'banana'}
    {'orange'}
    {'apple' }
    {'peach' }
    {'pear'  }
    {'cherry'}

If it's the second case, the simple way would be to simply read the file as above and then use the size of A to allocate a new array.

mynewarray = zeros(size(A));

This may be expensive if the file contents are unneeded or cause memory burdens. Trying to accurately and efficiently get line counts might be a bit more complicated otherwise:

https://www.mathworks.com/matlabcentral/answers/81137-pre-determining-the-number-of-lines-in-a-text-file

[Nicle Davidson]

Let's say I have a file as mentioned above.

Based on this file I have made a such matrix say H in another file:

Explaining what my matrix is: the numbers are ascii for letters, I want to register the positions of where I have capital letters, which have the asciies 65 to 90, in a new matrix say M.

I need to read the matrix H from the file it is stored in, and make a new matrix M which has this in content:

M=(4 5

5 7

5 10

2 12)

The numbers are the positions of capital letters in my H matrix. The point is also that the new matrix M will have same number of rows as I have letters in my word list. (in the example above it was 4) so M needs to have 4 words.

Sorry if I am not so good in explaining the problem. If it helps you can test on the mixAcs.mat file

How can I make a code for this

Answer 2

[KSSV]

Read about importdata. You can import the data into MATLAB, the data will be a cell array.

S = importdata('myfile.txt') ;
celldisp(S)

[Nicle Davidson]

Is S then a matrix, because doing this I can have an array. Is it possible to make a matrix which has as many rows as the list elements?

[KSSV]

S is a cell array, you can access the words by S{1},S{2}...S{n}.