How to read an input text file having multiple values??

0 0 0 0.5 0 0.049406182 1 0 0.097122055 0 0.51 0 0.5 0.51 0.049406182 1 0.51 0.097122055

1.5 0 0.143149239 2 0 0.187489294 1.5 0.51 0.143149239 2 0.51 0.187489294

Read these values of x1,y1,z1 x2,y2,z2 x3,y3,z3....and so on

Answer 1

[KSSV]

REead about load, importdata, textscan. If your file has only numbers then load / importdata should work.

[Virajan Verma]

Can u give me one example of loading x1,y1,z1 and x2,y2,z2??

[KSSV]

Attach your file....

Answer 2

[Virajan Verma]

Here it is

[KSSV]

fid = fopen('inputxyzz.txt','r');
S = textscan(fid,'%f %f %f') ;
x = S{1} ; y = S{2} ; z = S{3} ;
fclose(fid) ;
scatter3(x,y,z,10,z,'filled')

[Virajan Verma]

Thanks. But it is loading x,y,z column wise. I want x1,y1,z1....x2,y2,z2...x3,y3,z3..and so on row wise.How to do that??

[KSSV]

Friend......it is loading in the way what you want only...

coor = [x y z] ;
coor(1,:)      % this igves you (x1,y1,z1)
coor(7,:)      % this gives you (x7,y7,z7)
coor(i,:)      % this gives you (xi,yi,zi) ;

[Virajan Verma]

So i should write coor(i,:) or coor(1,:),coor(2,:)...and so on??

[KSSV]

yes.....

[Virajan Verma]

First one or second one(see my previous comment).

[KSSV]

:(

I mean to say i = 1,2,....n

[Virajan Verma]

Still not working.I have written like this:

for i=1:1:122
fid = fopen('inputxyzz.txt','r');
S = textscan(fid,'%f %f %f') ;
x = S{1} ; y = S{2} ; z = S{3} ;
fclose(fid) ;
scatter3(x,y,z,10,z,'filled')
coor = [x y z] ;
coor(i,:)
end

ERROR: undefined function x1.(Lxn_dash=N1*x1+N2*x2+N3*x3; in this line)

[madhan ravi]

fid = fopen('inputxyzz.txt'','r'); 
    S = textscan(fid,'%f %f %f') ; 
    x = S{1} ; y = S{2} ; z = S{3} ; 
    fclose(fid) ; scatter3(x,y,z,10,z,'filled')
    coor = [x y z] ; 
    for i=1:1:122 

      coor(i,:) 
      end

[Virajan Verma]

Still not working. Same error, undefined x1. It is not loading up the values i think. But a graph is showing. Dont know why??

[KSSV]

@ Virajan Verma dont blindly follow the code........read what the function does....the doubts you are asking are very silly.

fid = fopen('inputxyzz.txt','r');
S = textscan(fid,'%f %f %f') ;
x = S{1} ; y = S{2} ; z = S{3} ;
fclose(fid) ;
scatter3(x,y,z,10,z,'filled')
coor = [x y z] ;
for i = 1:length(X)
     coor(i,:)
end

[Virajan Verma]

@KSSV Yes i know i am asking silly question. I havnt done coding previously, so i am getting stuck way too many times. I tried ur above expression but the error is still there.

[KSSV]

No one done coding earlier, at the time of their career beginning .....one has to learn.....you are showing a part of your code...you are not showing full code.

Lxn_dash=N1*x1+N2*x2+N3*x3;

Obviously the above lines show error. Where you have defined (x1,x2,x3)????They are not defined....they are in the coor or (x,y,z) ..you need to provide the indices of it. May be like this:

Lxn_dash=N1*x(1)+N2*x(2)+N3*x(3);

Here, you will be having nodal connectivity data, with this nodal connectivity daya you will be getting the vertices of every element.

[Virajan Verma]

According to you, how many values of Lxn_dash should come??

[KSSV]

It depends on the number of elements and number of nodes in each element.

Thanks officially for accepting the answer.