MATLAB: How to change a line in text file

Hi i have the following text file:

*
* STEP: Step-1
*
* *Step, name=Step-1
* *Static
* 1., 1., 1e-05, 1.
*
* BOUNDARY CONDITIONS
*
* Name: BC-1 Type: Symmetry/Antisymmetry/Encastre
* *Boundary
* Set-1, ENCASTRE
*
* LOADS
*
* Name: Load-1 Type: Pressure
* *Dsload
* Surf-1, P, 20

i would like to change no (20) on last line with matlab. how i can do that

Best Answer

http://www.mathworks.com/matlabcentral/answers/132079-replacing-a-string-with-another-string-in-a-text-file

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MATLAB: How edit and write into particular line consisting of letters and numbers text file using matlab

f= fopen('your data in text file'); 
c = textscan(f,'%s','delimiter','\n'); 
fclose(f) ;
S = c{1} ;
%
str = {'Surf_temp_Set-4, 11, 11, 350.'} ; % to be replaced 
str1 = strsplit(str{1}) ;
% get the index which is to be repalced 
idx1 = find(not(cellfun('isempty',strfind(S, str1{1}))));  
%  Repalce
S(idx1) = str ;
% write to a rext file
fid = fopen('file.txt','w') ;
fprintf(fid,'%s\n',S{:});
fclose(fid) ;

MATLAB: How to specify boundary conditions on subdomain borders using the Partial Differential Equation (PDE) Toolbox 1.0.13 (R2008b)

One should be able to specify boundary conditions on all external boundaries of any geometry.

 For example, look at the “A scattering problem” example in the documentation. It has a Neumann condition at the outer boundary and a Dirichlet condition at the inner boundary (that is formed by the square sub-region).

Boundary conditions on internal boundaries such as boundaries across which material properties or governing equations might change are not required by Finite Element method.

Best Answer

Related Solutions

MATLAB: How edit and write into particular line consisting of letters and numbers text file using matlab

MATLAB: How to specify boundary conditions on subdomain borders using the Partial Differential Equation (PDE) Toolbox 1.0.13 (R2008b)

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