Community Profile # Sameer

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Cholesky decomposition explanation simple terms
Could someone explain to me what Cholesky decomposition is in layman terms? Like the simple intuition behind it. Thanks.

etwa 8 Jahre ago | 0 answers | 0

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Question

Rows columns (nodes) that do not meet fmincon constraints
How can we output to the screen the columns that are unable to meet the constraints of fmincon, using "disp()"?

etwa 8 Jahre ago | 1 answer | 0

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how to pinpoint the maximum scalar in a matrix?
how do we extract the maximum number from a matrix, and tell the screen which column or row this number is in?

etwa 8 Jahre ago | 2 answers | 0

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Question

tolerance for fmincon function?
Hello: http://www.mathworks.com/matlabcentral/answers/131835-constraints-not-meeting-the-parameters this is where my main ...

etwa 8 Jahre ago | 0 answers | 0

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Question

Constraints not meeting the parameters?
Hello: <</matlabcentral/answers/uploaded_files/13476/Capture%204.PNG>> This is what my code looks like for the the linear ...

etwa 8 Jahre ago | 1 answer | 0

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Question

how to make reference to a line in matlab?
can you make a reference to a certain line in MATLAB that will allow you to use it in a loop? I am trying to use multiple lin...

etwa 8 Jahre ago | 1 answer | 0

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Question

errors in the loop iteration
<</matlabcentral/answers/uploaded_files/13464/capture%202.PNG>> How come it is giving me the following errors in the loop? ...

etwa 8 Jahre ago | 0 answers | 0

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Question

inner matrix dimensions must agree error in the function?
function [f] = objfun(W,VCVMatx) %function for varience of the portfolio with swtN stocks f =W*VCVMatx*W'; this is m...

etwa 8 Jahre ago | 1 answer | 0

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Question

using linear equality constraint within the loop
My assignment is to optimize a portfolio given a set of stock. I already have one linear equality constraint that makes certa...

etwa 8 Jahre ago | 0 answers | 0

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Question

bold 1 in matlab
My professor said that a bold 1 will sum of the entries of a vector to make it equal to a certain number. However, I do not know...

etwa 8 Jahre ago | 1 answer | 0

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Question

how to use multiple linear equality constraints
how can i use multiple linear equality constraints in one fmincon function?

etwa 8 Jahre ago | 1 answer | 0

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Question

how to make vector sum to one?
I'm using fmincon to minimize the varience of a portfolio. As such, how would I be able to use TWO linear equality constraints? ...

etwa 8 Jahre ago | 1 answer | 0

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Question

how to use two linear equality constraints
how can i use two (more than one for each type of constraint) for a specific function?

etwa 8 Jahre ago | 1 answer | 0

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Question

not enough input arguments error? (fmincon)
Hello: I tried running fmincon, but in the main program it says the function does not have enough input arguments. f = W...

etwa 8 Jahre ago | 0 answers | 0

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Question

Aeq must have two columns error???
this is my Aeq and beq: swtOther_Aeq = [ 1 0 1 0 0 0 1 0 0 0 ]; swtOther_beq = [ 0.22 ]; yet matlab is telling me Aeq n...

etwa 8 Jahre ago | 1 answer | 0

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Question

how to create surface plot with NX3 matrix?
how do I create a surface (surf) plot with a NX3 Matrix? also how do i add a colorbar to this plot? Thanks.

etwa 8 Jahre ago | 1 answer | 0

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Question

varience of portfolio without financial toolbox
how do i find the variance of a portfolio with N (variable number of assets)? the number of stocks will change depending on n...

etwa 8 Jahre ago | 1 answer | 0

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Question

Linear Constrained optimization help
function [ h ] = LinConOp( x ) x0 = [-1,1]; lb = swtMinWt1; ub = swtMaxWt1; Aeq = swt_Aeq; beq = swt_be...

etwa 8 Jahre ago | 1 answer | 0

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Question

global variable not working.
function [f] = objfun(n) global f; f = var(n); end How is the global variable not working

etwa 8 Jahre ago | 1 answer | 0

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Question

variance of portfolio as objective function
how would be able to set up the variance of a portfolio as an seperate objective function? I have the data read in from excel...

etwa 8 Jahre ago | 2 answers | 0

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Question

Which function will tell me how many rows and columns in matrix?
How would I be able to write row(A) and it would output the number of rows in matrix A? What function should I use and write?...

etwa 8 Jahre ago | 1 answer | 0

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Question

How to display numbers in the vector in the title for MATLAB?
my vector looks like this : swtCI = [.99 .95 .50 ]' this will be in the loop (shown below): <</matlabcentral/answe...

etwa 8 Jahre ago | 0 answers | 0

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Question

Attempted to access B(25,1); index must be a positive integer or logical.
Why cant i display a negative number in matlab??? it isnt letting me?? <</matlabcentral/answers/uploaded_files/12628/loop%20p...

etwa 8 Jahre ago | 0 answers | 0

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Question

Attempted to access B(25,1); index must be a positive integer or logical.
rowsCI = rows(swtCI); B = sort(PQMatx(:,3)); h=1; while h<=rowsCI; UB=(1-swtCI(h,1)); UBB=UB/2; UBBB=1-UBB; ...

etwa 8 Jahre ago | 1 answer | 0

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Question

how to create confidence intervals in a while loop without stat toolbox?
how to create confidence intervals in a while loop without stat toolbox? using fitdist and paraci requires the toolbox, I ass...

etwa 8 Jahre ago | 0 answers | 0

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Question

how to find the biggest % values in a histogram?
how do you find the biggest % values in a histogram? I am building a confidence interval and I need that upper and lower rang...

etwa 8 Jahre ago | 0 answers | 0

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Question

how to output a title associated with number in vector
'Probability greater than swtNPVProb(i,1)' this is a do-loop sequence. swtNPVProb is a vector. how do i get the title to...

etwa 8 Jahre ago | 0 answers | 0

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Question

how to say a number in the title
'Probability greater than swtNPVProb(i,1)' i is the loop variable. how do i get it to say the number associated with the vari...

etwa 8 Jahre ago | 3 answers | 0

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Question

how to report a number to the screen (from a switch)
instead of saying "Probability greater than swtNPVProb(1,1)" etc. how do i get it to say the actual number? and if i change ...

etwa 8 Jahre ago | 0 answers | 0