jay_of_may's articles:

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print string and numbers 3 23 (2/8/2010 6:34:03 AM) comp.soft-sys.matlab I am new to Matlabs printing tools (e.g. sprintf) and I am unable in due time to perform a very simple task. I have 2 vectors of equal length (6): 1) Labels: 'X_003' 'X_029' 'X_046' 'X_047' 'X_056... Guido

delete rows in a matrix #2 6 12 (8/16/2009 11:19:01 PM) comp.soft-sys.matlab Is there a quick way to delete rows one at a time from a matrix of size n-by-n? The objective is to obtain a sequence of n matrices of size (n-1)-by-n, each stripped off of a row. I have tried, with success, th... Guido

correlation #17 6 23 (7/29/2009 7:06:02 AM) comp.soft-sys.matlab Recently my corr.m file does not work properly. Suppose I have two series x and y of equal length, performing corr(x,y) produces the following error: ??? Undefined function or method 'statgetargs' for input arg... Guido

gradient #6 0 28 (1/12/2009 1:17:02 AM) comp.soft-sys.matlab For tutorial purposes I want to estimate by FMINUNC an Ordinary Least Squares (OLS) problem. I minimize the sum of squared errors (SSE) defined as the difference between the endogenous variable (y1) and the var... Guido

Yearly to quarterly conversion. 2 20 (11/30/2008 5:47:02 PM) comp.soft-sys.matlab I have the following vector: mydates=[1976:2005]'; and I want to create both a datenum and a datestr of mydates that includes quarters, e.g. 1976-01, ..., 1976-04,1975-01,...,2005-04. How can I proceed? Please ... Guido

Edgeworth expansion 0 19 (7/30/2008 4:27:01 AM) comp.soft-sys.matlab Anybody as a code to compute Edgeworth expansion of a PDF, both standard normal and normal? Regards, jay. ... Guido

opening window matlabrc 1 48 (7/28/2008 4:52:01 AM) comp.soft-sys.matlab Whenever I open Matlab (2008a) I get a message in the window that says: " Warning: Executing startup failed in matlabrc. This indicates a potentially serious problem in your MATLAB setup,which should be resol... Guido

Filling an array #2 1 18 (10/15/2007 9:14:17 AM) comp.soft-sys.matlab I have a vector a=[1 2 3 5 8 9 10] which I want to fill with zeros to obtain b=[1 2 3 0 5 0 0 8 9 10], i.e. a time series with zeros corresponding to the missing values of a. Please someone help me! Thanx in ... Guido

matrix division #3 2 19 (6/20/2007 4:10:09 PM) comp.soft-sys.matlab I have two known vectors, K and G, of size 1-by-n, and an unkown matrix A of size n-by-n. Originally I have the following relationship: K=G*A. How can I correctly compute A? Thanx in advance, regards guido. ... Guido

Riccati DARE 0 28 (6/19/2007 9:10:05 PM) comp.soft-sys.matlab Given the Riccati matrix as in DARE, my unknown is matrix A(n-by-n), while known are X,B,Q,R and also the gain matrix G. Upon appropriate inversion, I obtain A which, however, apparently presents no closed-form... Guido

jay_of_may's replies:

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correlation #17 6 23 (7/29/2009 7:06:02 AM) comp.soft-sys.matlab Recently my corr.m file does not work properly. Suppose I have two series x and y of equal length, performing corr(x,y) produces the following error: ??? Undefined function or method 'statgetargs' for input arg... jay_of_may (22)

delete rows in a matrix #2 6 12 (8/16/2009 11:19:01 PM) comp.soft-sys.matlab Is there a quick way to delete rows one at a time from a matrix of size n-by-n? The objective is to obtain a sequence of n matrices of size (n-1)-by-n, each stripped off of a row. I have tried, with success, th... jay_of_may (22)

print string and numbers 3 23 (2/8/2010 6:34:03 AM) comp.soft-sys.matlab I am new to Matlabs printing tools (e.g. sprintf) and I am unable in due time to perform a very simple task. I have 2 vectors of equal length (6): 1) Labels: 'X_003' 'X_029' 'X_046' 'X_047' 'X_056... jay_of_may (22)

Advanced PCA Problem: Application to Timeseries 5 16 (2/17/2010 2:43:21 PM) comp.soft-sys.matlab In summary, the problem is forecasting timeseries using PCA. I have four key matrices (R, X, Z, Q). I shall describe them in detail here: R: Raw time series data This is a matrix of timeseries data size ... hchris011