rearrange matrix to vector according to adress

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alize beemiel
alize beemiel on 31 Mar 2022
Commented: alize beemiel on 31 Mar 2022
hi
i have a matrix CHARGE with value coresponding like this
CHARGE =[178.4 0.78 0 0 0 0 0 0
0 0 0 0 154.9 88.54 666.67 178.6
154.1 89.89 0 0 0 0 0 0
0 0 0 0 89.89 154.1 488 488
88.54 154.9 0 0 0 0 0 0
0 0 0 0 0.78 178.4 178.6 666.67
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 ]
line1 is a charge value of x ... x(M(1,1)) x(M(1,2)) x(M(1,3)) x(M(1,4)) x(M(1,5)) x(M(1,6)) x(M(1,7)) x(M(1,8))
line2 is a charge value of y ... y(M(1,1)) y(M(1,2)) y(M(1,3)) y(M(1,4)) y(M(1,5)) y(M(1,6)) y(M(1,7)) y(M(1,8))
line3 is a charge value of x ... x(M(2,1)) x(M(2,2)) x(M(2,3)) x(M(2,4)) x(M(2,5)) x(M(2,6)) x(M(2,7)) x(M(2,8))
line4 is a charge value of y ... y(M(2,1)) y(M(2,2)) y(M(2,3)) y(M(2,4)) y(M(2,5)) y(M(2,6)) y(M(2,7)) y(M(2,8))
line5 is a charge value of x ... x(M(3,1)) x(M(3,2)) x(M(3,3)) x(M(3,4)) x(M(3,5)) x(M(3,6)) x(M(3,7)) x(M(3,8))
line6 is a charge value of y ... y(M(3,1)) y(M(3,2)) y(M(3,3)) y(M(3,4)) y(M(3,5)) y(M(3,6)) y(M(3,7)) y(M(3,8))
etc..
witch M is matrix adress
M = [ 1 8 12 13 14 9 3 2
3 9 14 15 16 10 5 4
5 10 16 17 18 11 7 6
12 19 23 24 25 20 14 13
14 20 25 26 27 21 16 15
16 21 27 28 29 22 18 17
23 30 34 35 36 31 25 24
25 31 36 37 38 32 27 26
27 32 38 39 40 33 29 28
34 41 45 46 47 42 36 35
36 42 47 48 49 43 38 37
38 43 49 50 51 44 40 39 ]
and i want to make all value of charge in one column VFC
i use reshape but is not give me what i wont
i use loop like this but its make me crazy
NE=length(CHARGE(:,1))
NNode=51;
VFC=zeros(NNode*2,1) ;
for i=1:NNode*2
for j=1:length(M)
CHARGE( M(i,j),j)=CHARGE( M(i,j),j)+ ?........ %(i need to some value of charge for the same adrees in M )
VFC(i*2-1)=CHARGE( M(i,j),j) +......? % (i*2-1 for value of x)
VFC(i*2)= .......? %(i*2 for value of y
end
end
i feel its just simple but
but what i want is to reanrange my matrix to a vector with additional value of Matrix CHARGE in the same adress of Matrix M
i do it manualy with excel
but it took me alot of time
another word
i need this vector
VFC =[ 178.4
0
0
178.6
154.1
666.7
0
488
88.54
488
0
666.7
0
178.4
0.78
0
89.89
88.54
154.9
154.1
0
0.78
0
0
0
0
0
154.9
0
0
0
89.89
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0]
can someone help me
  2 Comments
Arif Hoq
Arif Hoq on 31 Mar 2022
Edited: Arif Hoq on 31 Mar 2022
CHARGE =[178.4 0.78 0 0 0 0 0 0
0 0 0 0 154.9 88.54 666.67 178.6
154.1 89.89 0 0 0 0 0 0
0 0 0 0 89.89 154.1 488 488
88.54 154.9 0 0 0 0 0 0
0 0 0 0 0.78 178.4 178.6 666.67
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 ] ;
VFC=CHARGE(:); % Matric CHARGE in 1 column
is that your expectation ??
if now then can you please explain again ?
i do it manualy with excel
can you plese show us that ?
alize beemiel
alize beemiel on 31 Mar 2022
i try this
and its give me what i want
MCNT = [ 1 8 12 13 14 9 3 2
3 9 14 15 16 10 5 4
5 10 16 17 18 11 7 6
12 19 23 24 25 20 14 13
14 20 25 26 27 21 16 15
16 21 27 28 29 22 18 17
23 30 34 35 36 31 25 24
25 31 36 37 38 32 27 26
27 32 38 39 40 33 29 28
34 41 45 46 47 42 36 35
36 42 47 48 49 43 38 37
38 43 49 50 51 44 40 39 ];
CHARGE =[178.4 0.78 0 0 0 0 0 0
0 0 0 0 154.9 88.54 666.67 178.6
154.1 89.89 0 0 0 0 0 0
0 0 0 0 89.89 154.1 488 488
88.54 154.9 0 0 0 0 0 0
0 0 0 0 0.78 178.4 178.6 666.67
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 ];
NELEM=12;
NPOINT=51;
NPOINT;
NNODE=8;
VFCC=zeros(NPOINT*2,1) ;
NPOINT*2
VFCC
for IELEM=1:NELEM
for INODE=1:NNODE
NUMN=MCNT(IELEM,INODE)
2*NUMN-1
2*NUMN
VFCC(2*NUMN-1,1)=VFCC(2*NUMN-1,1)+CHARGE(2*IELEM-1,INODE);
VFCC(2*NUMN,1 )=VFCC(2*NUMN,1 )+CHARGE(2*IELEM ,INODE);
end
end
VFCC

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