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Zheng


32 total contributions since 2007

Professional Interests: Trading

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Question


how to find the curve I want by using algos?
<</matlabcentral/answers/uploaded_files/4370/curve%20shapes.png>> Does anyone know how to find the curve I want by using algo...

3 years ago | 1 Answers | 0

1

answer

Question


How can I extract the numbers from this string
Anyone knows that is there any easy way to extract the numbers from this string? the string is "JY CME JAPANESE YEN FUTURES S...

3 years ago | 1 Answers | 0

1

answer

Question


Delete letters in a string variable
Hi, for instance, string variables are '2456.00A', '2501A',... How can I delete letters in a string variable? Thanks in...

3 years ago | 2 Answers | 0

2

answers

Answered
How can I extract the parameters from curve fitting 'fit' function?
answer is http://www.mathworks.com/support/solutions/data/1-1BH6I.html?solution=1-1BH6I

4 years ago | 0

| accepted

Question


How can I extract the parameters from curve fitting 'fit' function?
load enso; f = fit(month,pressure,'fourier8') Here is my code. variable f can be shown on the command window. But anyone...

4 years ago | 1 Answers | 0

1

answer

Question


How can I insert a data into specified GUI table cell?
<<http://i45.tinypic.com/fn7rcg.png>> as the below picture shows. I want to change the values within "Status" Column by click...

4 years ago | 1 Answers | 0

1

answer

Answered
How to hide web browser while using web function
does it work? I need to use web function to access the webpage to active online server, but I don't want the application users t...

4 years ago | 0

Question


How to hide web browser while using web function
For instancce, I want to open the URL 'GOOGLE.COM' by using web function --- [stat,h]=web('Google.COM'); can I hide web br...

4 years ago | 3 Answers | 0

3

answers

Answered
How can I use a Push Button callback function to call Radio Button Group's SelectionChangeFcn?
just change uipanel1_SelectionChangeFcn to handles.uipanel1

4 years ago | 0

| accepted

Question


How can I use a Push Button callback function to call Radio Button Group's SelectionChangeFcn?
My codes are wrong. How can I make it work by modifying below codes? function pushbutton1_Callback(hObject, eventdata, handle...

4 years ago | 1 Answers | 0

1

answer

Question


How to change the specified part of URL when I use MatLab's web function?
Hi All I need to use Matlab to open the URL (http://www.thisismoney.co.uk/money/saving/article-1583859/), however I want to c...

4 years ago | 1 Answers | 0

1

answer

Question


How can I update the results from a Timer to a text box every 5 second?
My codes are shown as below: TimeSpan = str2double(get(handles.edit1,'String')); Parameter = str2double(get(handles.edit2,...

4 years ago | 1 Answers | 0

1

answer

Question


How to prevent the function within a Timer to keep displaying the answer in Command Windows?
Hi ALl My code is shown as below set(handles.edit3,'String',num2str(MyFuc(Input))); tmr=timer('Period',10,'ExecutionMod...

4 years ago | 1 Answers | 0

1

answer

Question


how can I use "Fit" function to calculate surface fit for a 2D matrix?
Hi Everyone how can I use "Fit" function to calculate surface fit for a 2D matrix? such as the regression surface for rand(30...

4 years ago | 0 Answers | 0

0

answers

Question


How to get the fitted data by using Matlab's "Fit" Function?
For example, by using below code load franke; fitresult = fit( [x, y], z, 'poly33' ); From fitresult, I can get the for...

4 years ago | 2 Answers | 0

2

answers

Question


How to extract the data that is used to draw a surface in this example?
Here's Matlab example oad franke; fitresult = fit( [x, y], z, 'poly23' ); % use fit function to calculate a surface Then ...

4 years ago | 1 Answers | 0

1

answer

Question


How to set the variables as integers in a Genetic Algorithm Function?
Hi, Supposing the objective function is @(x)f(x(1),x(2)). I would like to set the variable 'x' as a integer in a Genetic Algo...

4 years ago | 1 Answers | 0

1

answer

Responded


Re: Anyone Can Help Me?
Thanks Everyone, I have sorted this problem out.

7 years ago | 1350 views

Posted


how to remove zeros in a matrix?
hi Everyone, Sorry for bothering you again. How Can I turn this matrix 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 6 0 0 0 0 0 7...

7 years ago | 2286 views

Posted


Anyone Can Help Me?
Hi EveryOne I got two vectors A = [ 0 0 8 3 0 0 0 3 9]'; B = [ 0 9 0 0 7 6 0 0 0]'; I want let the vector be C = [ 0 0 1 0...

7 years ago | 1350 views

Responded


Re: Hi Can Anyone Help
Thanks, but I want to calculate this automatically cause I got a lot of data.

7 years ago | 1047 views

Posted


Hi Can Anyone Help
Hi EveryOne I got two vectors A = [ 0 0 8 3 0 0 0 3 9]'; B = [ 0 9 0 0 7 6 0 0 0]'; I want use 9 - 8 and (7 + 6) - 3*2; How...

7 years ago | 1047 views

Posted


Diebold-Mariano test, NMSE, IQR
I use normalized mean square error (NMSE) and the interquartile range (IQR) to meansure and rank the forecasts generated by diff...

8 years ago | 3775 views

Posted


Can I apply extended kalman filter to this state space model?
there is a 2nd order exponential autoregressive model y(t) = a1(t)+a2(t)*exp(-a3(t)*y(t-1)^2)*y(t-1)+a4(t)*exp(-a5 (t)*y(t-1)^2...

9 years ago | 750 views

Posted


can anyone help design a state space model applying into Extended Kalman Filter
x1(t) = x2(t)+x3(t)*exp(-x4(t)*x1(t-1)^2)*x1(t-1)+x5(t)*exp (-x6(t)*x1(t-1)^2)*x1(t-2) + randn*v1; x2(t) = x2(t-1) + randn*v2; ...

9 years ago | 953 views

Posted


can anyone help design a state space model applying into Extended Kalman Filter
x1(t) = x2(t)+x3(t)*exp(-x4(t)*x1(t-1)^2)*x1(t-1)+x5(t)*exp (-x6(t)*x1(t-1)^2)*x1(t-2)+randn*v1; x2(t) = x2(t-1) + randn*v2; x3...

9 years ago | 576 views

Responded


Re: missing data handling
in message <fhd3tu$1i$1@fred.mathworks.com>... thanks a lot, Nicolaie, you save my life.

9 years ago | 385 views

Posted


missing data handling
Supposing there is a vector containing missing data. y = [1.2 1.1 1.6 NaN 1.4 1.6 1.7 1.9 NaN NaN NaN NaN NaN 0.98 0.7]; The es...

9 years ago | 385 views

Posted


A question about autoregression a vector containing missing data
supposing a vector y = [1.2 1.1 1.6 NaN 1.4 1.6 1.7 1.9 NaN NaN NaN NaN NaN 0.98 0.7]; y_hat is estimated value which can be ...

9 years ago | 858 views

Posted


why all results are 'NaN'?
I just did a program. However, after I put the data, all generated results are 'NaN' Can anyone help me? function [y_cond,v,a,...

9 years ago | 1296 views

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