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

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Virajan Verma 2018-10-10

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评论： KSSV 2018-10-11

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

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KSSV 2018-10-10

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

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Virajan Verma 2018-10-10

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

KSSV 2018-10-10

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Attach your file....

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Virajan Verma 2018-10-10

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inputxyzz.txt

Here it is

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KSSV 2018-10-10

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在 MATLAB Online 中打开

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 2018-10-10

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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 2018-10-10

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在 MATLAB Online 中打开

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 2018-10-10

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

KSSV 2018-10-10

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yes.....

Virajan Verma 2018-10-10

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

KSSV 2018-10-10

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

Virajan Verma 2018-10-10

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编辑：KSSV 2018-10-10

在 MATLAB Online 中打开

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 2018-10-10

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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 2018-10-10

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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 2018-10-10

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@ 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 2018-10-10

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@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 2018-10-10

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在 MATLAB Online 中打开

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 2018-10-11