George Papazafeiropoulos

Last seen: 4 giorni fa | Attivo dal 2012

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Civil & Infrastructure Engineer, M.Sc., Ph.D.

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Why images are displayed twice when using the publish function in a word
Some other fixes, if the answer by Richard Quist does not work: 1) Use figure() instead of figure(i) (where i is the figure num...

circa un anno fa | 0

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Can global optimization toolbox-GA 'ga'function optimization many values at the same time?
Please check the gamultiobj function

circa 2 anni fa | 0

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Removing rows with empty values in table
AllHitMov(1:6393,:)=[];

circa 2 anni fa | 0

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multiple correlation
Check the function regress()

oltre 2 anni fa | 0

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Multiple correlation coefficient - R, R^2
Check the function regress()

oltre 2 anni fa | 0

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How to apply neural networks for multiple experimental data
Dear Bharat, I have checked your code segment and I have assigned arbitrary values to the variables that are undefined in it. I...

oltre 5 anni fa | 0

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Run Abaqus cmd from MATLAB command line
You can execute the following Matlab code in Windows: try system(['abaqus cae noGUI=model.py interactive']) %...

oltre 7 anni fa | 0

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how to call abaqus using matlab for iterative process?
You should access the abaqus results (*.fil) file via MATLAB. In order to take your results into a fil file you should specify...

oltre 7 anni fa | 0

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Negative eigenvalues with frequency analysis related to ABAQUS
Dear Xiaohan, You can perform the eigenfrequency analysis in Abaqus as usual and then extract the analysis results using Abaq...

quasi 8 anni fa | 0

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How to call abaqus from matlab？
!abaqus job=job_1 without the extension (*.inp). If you want to obtain the results of this analysis back to Matlab, then you hav...

quasi 8 anni fa | 0

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Abaqus and Matlab (Optimising the simulation parameters in Matlab by calling Abaqus as external subroutine)
You can use the new toolbox developed to serve as an interface between Abaqus and Matlab, which is Abaqus2Matlab. With this tool...

quasi 8 anni fa | 0

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How to do this: Multivariate Interpolation with random data (non-gridded)
vq = griddata(x1,x2,y,x10,x20) hth, George Papazafeiropoulos

oltre 10 anni fa | 0

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how to write the nonlinear constraints in fmincon
Define the constraint function as follows: function [C,Ceq]=confun(x) F1=... F2=... F3=... F4=... F5=... ...

oltre 10 anni fa | 1

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I have n points (x ,y coordinates known) of two parallel lines (not perfect straight ) want to draw lines from first boundary points to second boundary with proper slope . Also want to find min & max distance between the lines.
BOUN1=[ 191 220 189 221 188 222 186 223 186 224 185 225 185 226 185 227 185 228 186 229 187 230 187 231 187 232 187 233 187 23...

oltre 10 anni fa | 0

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How to solve linear and non linear equation system?
For 14 equations with 14 unknowns, try fsolve, or any other iterative solver (Newton-Raphson, Arc-Length, line search, etc...) ...

oltre 10 anni fa | 0

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Defining a function (including vector dot product) for all the points in 3D
% data dx = 0.1; dy = 0.5; dz = 0.1; [x, y, z] = meshgrid( (1:100)*dx, (1:100)*dy, (1:100)*dz ); X = [x(:) y(:)...

oltre 10 anni fa | 0

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Remove NaN from a matrix
ind=sum(~isnan(B)); B(isnan(B))=0; mean=sum(B)./ind

oltre 10 anni fa | 2

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find min or max value element from more than two matrices
% data matrix1=rand(2); matrix2=rand(3); matrix3=rand(4); % engine c=nan(4,4,3); c(1:2,1:2,1)=matrix1; c(...

oltre 10 anni fa | 1

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How to get the output to a variable
Try this after running your code: fit1.Constant fit1.GARCH{1} fit1.ARCH{1} fit1.Offset

oltre 10 anni fa | 1

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how to select higher value in a matrix and change that by introducing an error?
Are you looking for something like this? a= [ 0.83 0.85 0.97 0.1 0.95 0.93 0.2; 0.2 0.12 0.12 0.76 0.77 0.78 0.25; ...

oltre 10 anni fa | 1

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i want to save all the value of variable a from all iterations into a single matrix ?
% initial data f=[1 3 5 7 9 11; 2 4 6 8 10 12]; b=[1 2;3 4]; % engine b=b'; [nn,n]=size(f); [m,c]=size(b...

oltre 10 anni fa | 0

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Draw a line on a 2D plot at a particular x and y values
x=linspace(0,4); y=x.^2; plot(x,y); line([3;3],[0;9],'linestyle','--'); line([0;3],[9;9],'linestyle','--');

oltre 10 anni fa | 2

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how to make vector sum to one?
W'*ones(N,1)=1

oltre 10 anni fa | 2

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how to use multiple linear equality constraints
Convert them into matrix form and look about the input arguments Aeq and Beq in the documentation of fmincon.

oltre 10 anni fa | 1

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Extend a vector by extending its elements
If X is a column vector: % initial data d=10; % engine X=(1:d)'; ind=ones(d^2,1); ind(d+1:d:d^2)=1-d; % r...

oltre 10 anni fa | 0

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How to detect if a line intersects with itself?
% initial data A = [1 1; 1 2; 2 2; 2 1; 3 1]; tour_order = [2; 1; 4; 3; 5; 2]; % engine sizeA=size(A,1); meanA=...

oltre 10 anni fa | 0

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Testing for an Integer and displaying that value.
% initial data ll=99; ul=500; f=5; % engine lb=floor(ll/f); if lb/2~=floor(lb/2) lb=lb+1; end r...

oltre 10 anni fa | 0

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Reduce dimensionality using indices
This is an alternative solution which does not contain external functions, thanks to Jos! % initial data A=ceil(10*rand(...

oltre 10 anni fa | 1

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Reduce dimensionality using indices
After specifying A... d=[1 2 3; 1 1 3; 2 1 1]; B=zeros(3,3,3); B(:,:,1)=(d==1); B(:,:,2)=2*(d==2); ...

oltre 10 anni fa | 0

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Multiple linear regression nonlinear constraints with fmincon
As an example for doing this, I give you an example. Define a function as follows: function er = objfun(a) global y x ...

oltre 10 anni fa | 0

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George Papazafeiropoulos

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