write matrix into .txt file

i have a matrix like this

A= 
  10  5  0
  12  7  3
  15  8  5
  19  9  6

i want to add a letter before each element in this matrix , while first column is x-axis values , 2nd column is y-axis values and 3rd column is Z-axis values.

i need to write a capital letter of X before each value of first column elements and letter Y before each value and the same with 3rd column with Z letter like this

X10 Y5 Z0
X12 Y7 Z3
X15 Y8 Z5

and so on. And after that i need to add this word of ( G1 ) before each line ( or each row of the matrix ) like this

G1 X10 Y5 Z0
G1 X12 Y7 Z3
G1 X15 Y8 Z5

and last thing to add in capital letter of N followed by the number of the line like this

N1 G1 X10 Y5 Z0
N2 G1 X12 Y7 Z3
N3 G1 X15 Y8 Z5

and save all of these into text file editable with notepad and other software

i need to know what is the functions to use and how to apply them to make this edit i want

thanks

Tarek

Answer 1

[John BG]

Hi Tariq

this is John BG ( <mailto:[e-mail] [e-mail]> )

Perhaps you may find convenient generating a work space variable containing all the data before writing to text file.

clear all;close all

A= [  10  5  0;  12  7  3;  15  8  5;  19  9  6]

[s1 s2]=size(A)

A3=cell(s1,s2)
str1='XYZ'
for k=1:1:s2
  for s=1:1:s1
    A3{s,k}=[str1(k) num2str(A(s,k))]
  end
end

header1=cell(s1,1)
for k=1:1:s1
  header1{k}=['N' num2str(k)]
end

header2=cell(s1,1)
for k=1:1:s1
  header2{k}='G1'
end

T = table(header1,header2,A3(:,1),A3(:,2),A3(:,3));

Now the data to write to text file is contained in table T

T =
  4×5 table
    header1    header2    Var3     Var4    Var5
    _______    _______    _____    ____    ____
    'N1'       'G1'       'X10'    'Y5'    'Z0'
    'N2'       'G1'       'X12'    'Y7'    'Z3'
    'N3'       'G1'       'X15'    'Y8'    'Z5'
    'N4'       'G1'       'X19'    'Y9'    'Z6'

One can access fields of the table in same way as arrays and cells

   T(1,1)
   =
    table
      header1
      _______
      'N1'

   T(1,3)
   =
    table
      Var3 
      _____
      'X10'

   T(3,:)

   =
    1×5 table
      header1    header2    Var3     Var4    Var5
      _______    _______    _____    ____    ____
      'N3'       'G1'       'X15'    'Y8'    'Z5'

   T(:,4)
   =
    4×1 table
      Var4
      ____
      'Y5'
      'Y7'
      'Y8'
      'Y9'

writing to .txt file

writetable(T,'file1.txt','WriteVariableNames',false,'WriteRowNames',false,'Delimiter',' ')

Also possible, saving to .mat file instead of text tile.

save('table1.mat','T')

John BG

<mailto:[e-mail] [e-mail]>

Answer 2

[Image Analyst]

Try this:

A= [...
  10  5  0
  12  7  3
  15  8  5
  19  9  6]

fid = fopen(filename, 'wt');
for row = 1 : size(A, 1)
  fprintf(fid, 'N%d G1 X%d Y%d Z%d\n', ...
    row, A(row, 1), A(row, 2), A(row, 3))
end
fclose(fid)