How to change exponentiation

Hello,

I want to change exponentiation from ^-5 to ^-6 and too format but will that 2. The command window is dense how can to do that line spacing.

Example the strain tensor is:

I need it accuracy to be like that:

Thanks for the helpers :)

My code:

clc;
clear;

sigma=input('Insert normal stresses[Mpa] and shear stresse[Mpa] of the cauchy stress tensor:');


sigma_xx=sigma(1,1);
tau_xy=sigma(1,2);
tau_xz=sigma(1,3);
tau_yx=sigma(2,1);
sigma_yy=sigma(2,2);
tau_yz=sigma(2,3);
tau_zx=sigma(3,1);
tau_zy=sigma(3,2);
sigma_zz=sigma(3,3);


disp('The matrix is'); disp(sigma);


Metal = input('Insert type of a metal material:','s');
switch Metal
    case 'AISI1020'
        S_y = 427;
        G = 80000; 
        v = 0.29;
        E = 207000; 
    case 'Alloy6061-T6'
        S_y = 276;
        G = 26000; 
        v = 0.33;
        E = 69000; 
    case 'SAE4340'
        S_y = 910;
        G = 83000; 
        v = 0.29;
        E = 214000; 
end

epsilon_x=(1/E)*((sigma_xx)-v*((sigma_yy)+(sigma_zz))) ;
epsilon_y=(1/E)*((sigma_yy)-v*((sigma_zz)+(sigma_xx))) ;
epsilon_z=(1/E)*((sigma_zz)-v*((sigma_xx)+(sigma_yy))) ;

gamma_xy=(tau_xy)/(2*G) ;
gamma_xz=(tau_xz)/(2*G) ;
gamma_yz=(tau_yz)/(2*G) ;

gamma_yx=gamma_xy;
gamma_zx=gamma_xz;
gamma_zy=gamma_yz;

epsilon=zeros(3,3);
epsilon(1,1)=epsilon_x;
epsilon(1,2)=gamma_xy;
epsilon(1,3)=gamma_xz;
epsilon(2,1)=gamma_yx;
epsilon(2,2)=epsilon_y;
epsilon(2,3)=gamma_yz;
epsilon(3,1)=gamma_zx;
epsilon(3,2)=gamma_zy;
epsilon(3,3)=epsilon_z;


disp('The strain tensor is') 
fprintf('%g   %g   %g\n',epsilon)

Answer 1

[Star Strider]

I wrote a littlle utility function for my own use a while back to do this.

Adapt it to do what you want:

expstr = @(x,n) [x(:).*10.^(-n*floor(log10(abs(x(:)))/abs(n)))  n*floor(log10(abs(x(:)))/abs(n))];

a=-0.07639297;
Result1 = sprintf('%.7fE%+04d', expstr(a,2))
Result2 = sprintf('%.7fE%+04d', expstr(a,6))
Result3 = sprintf('%.7fE%+04d', expstr(a,-4))

producing:

Result1 =
    '-7.6392970E-002'

Result2 =
    '-76392.9700000E-006'

Result3 =
    '-0.0000076E+004'

.

Answer 2

[Steven Lord]

Change the display format.

format % default which is "format short"
e = [5.45894e-6, -1.875e-5, 6.25e-6; ...
    -1.875e-5, 1.79227e-5, 3.125e-5; ...
    6.25e-6, 3.125e-5, -1.32367e-5];
disp(e)

   1.0e-04 *

    0.0546   -0.1875    0.0625
   -0.1875    0.1792    0.3125
    0.0625    0.3125   -0.1324

format long
disp(e)

   1.0e-04 *

   0.054589400000000  -0.187500000000000   0.062500000000000
  -0.187500000000000   0.179227000000000   0.312500000000000
   0.062500000000000   0.312500000000000  -0.132367000000000

format shorteng
disp(e)

     5.4589e-006   -18.7500e-006     6.2500e-006
   -18.7500e-006    17.9227e-006    31.2500e-006
     6.2500e-006    31.2500e-006   -13.2367e-006

[Emilia]

@Steven Lord

Thank you! You helped me too :)