Integrate new rows inside matrix and repeating them

I want to integrate two lines inside matrix and repeated frequently before each rows:

The original matrix:

A = [ G1 X8 Y118
      G1 X8 Y135
      G1 X 8 Y 150
      G1 X 8 Y 172
      G1 X 8 Y 209
      G1 X 8 Y 242
      G1 X 8 Y 410
      G1 X 9 Y 208
 ……..      ]  so on

Generated matrix

AA = [ 
M 802
M 800 P 8
G1 X8 Y118
M802   
M800 P8   
G1 X8 Y135    
M 802   
M 800 P 8   
G1 X 8 Y 150   
M 802  
M 800 P 8    
G1 X 8 Y 172    
M 802   
M 800 P 8    
G1 X 8 Y 209    
M 802    
M 800 P 8    
G1 X 8 Y 242    
M 802   
M 800 P 8    
G1 X 8 Y 410      
M 802  
M 800 P 8 
G1 X 9 Y 208 
  …………] so on

So before any row, put these two rows

M802

M800 P8

How can we do this?

[Image Analyst]

Are M, P, G1, etc. all variables of double class? Your AA matrix can't have some rows with two columns, like M and 802, and other rows with 3 columns, like [G1, X8, Y118] or 4 columns like [M, 800, P, 8]. Matrices have to be rectangular, meaning no ragged right edge. All rows must have the same number of columns.

And you tagged this image processing. What does this have to do with image processing???

[Islam Hassan]

All rows must have same numbers, we can define the repeated raws like this for example:

Repeat1 = ["M"+802,"","";"M"+800, "P"+8,""];

M, P, G1 just letters.

I tagged image processing becasue this matrix generated after doing image processing of a figure then I want to put the output matrix in a certian format (like G-code). May be I misjuddge this tag.

Answer 1

[Devineni Aslesha]

Here is the code to integrate two lines inside matrix and repeated frequently before each rows.

A = [ "G"+1 "X"+8 "Y"+118
    "G"+1 "X"+8 "Y"+135
    "G"+1 "X"+8 "Y"+150
    "G"+1 "X"+8 "Y"+170
    "G"+1 "X"+8 "Y"+209];
Repeat1 = ["M"+802,"","";"M"+800, "P"+8,""];
rows = size(A,1);
AA = [];
for i = 1:rows
    AA = [AA; vertcat(Repeat1, A(i,:))]
end

For more information, refer the following link

https://www.mathworks.com/help/matlab/ref/vertcat.html

[Islam Hassan]

Thanks a lot for your answer. That will solve it.

However, I have a related question, if I cave matrix like this:

A = [ M 802
      M 800 P 8
      G1 X8 Y118
      M802   
      M800 P9   
      G0 X8 Y135    
      M 802   
      M 800 P 8   
      G1 X 8 Y 150   
      M 802  
      M 800 P 9    
      G0 X 8 Y 172    
      M 802   
      M 800 P 8    
     G1 X 9 Y 209    
     M 802    
    M 800 P 9   
     G0 X 9 Y 242    
     M 802   
     M 800 P 8    
     G1 X 10 Y 410      
     M 802  
     M 800 P 9 
     G0 X 10 Y 208 
  …………] so on

I want add these two different rows, to creatw these;

AA = [ M 802

M 800 P 8

G1 X8 Y4

M802

M800 P9

G0 X8 Y5

M 802

M 800 P 8

G1 X 8 Y 6

M 802

M 800 P 9

G0 X 8 Y 7

M 802

M 800 P 8

G1 X 8 Y 10

G1 X 9 Y 10

G1 X 9 Y 9

M 802

M 800 P 9

G0 X 9 Y 6

M 802

M 800 P 8

G1 X 9 Y 0

G1 X 10 Y 0

G1 X 10 Y 410

M 802

M 800 P 9

G0 X 10 Y 208

G1 X 10 Y 10

G1 X 11 Y 10

…………] so on

add these rows G1 X 8 Y 10 ; G1 X 9 Y 10 ; depending on the last "X"+ value, if the value is even use G1 X "equal to last value" Y 10 ; G1 X "value +1" Y 10.

and if it is odd use G1 X "equal to last value" Y 0 ; G1 X "value +1" Y 0.

Thanks in advance.

[Devineni Aslesha]

Hi Islam,

With the help of the code given in the answer, you can make use of if and else statements in the for loop to add the specified rows.

For more information, refer the following links,

https://www.mathworks.com/help/matlab/ref/if.html

https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html