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Question
Matlab 2010 ARMA model
I have Matlab 2010 running on my work machine. I can see functions to fit AR model. (1) Is there any function or package to ...
ungefär 12 år ago | 1 answer | 0
1
answerQuestion
Correlation based on binary events
I have a system with 5 components. Every 10 seconds the signal travels to all of them and I know how many of them responded. I n...
mer än 12 år ago | 1 answer | 0
1
answerQuestion
Extracting variables from a struct array with many empty structs
I have a giant struct array and many of which are empty. struct array with fields: f1, f2, f3. i.e. Struct Array: StAr(i,j) ...
ungefär 13 år ago | 1 answer | 0
1
answerQuestion
Searching and Manipulating Cell Array - Part 2
This is a new problem but the problem data is similar. I have a cell array A: [3,2] [2,4] [4,5] [2,5] [6] a...
ungefär 13 år ago | 1 answer | 0
1
answerQuestion
Searching and Manipulating Cell Array
I have a cell array A: [3,2] [2,4] [4,5] [2,5] [6] and cell array B: [2,3,4] [2,5] [4,5,6] In the ...
ungefär 13 år ago | 1 answer | 0
1
answerQuestion
Accessing values from struct array
I have a giant struct array with fields: f1, f2, f3. i.e. Struct Array: StAr(i) has StAr(i).f1, StAr(i).f2,StAr(i).f3. But I wan...
ungefär 13 år ago | 2 answers | 0
2
answersQuestion
Finding rows in a matrix
I have a matrix A = [1 2; 2 1; 1 2; 2 2; 1 1; 2 2] I want to count how many times the row [1 2] appears in above matri...
ungefär 13 år ago | 3 answers | 0
3
answersQuestion
Loss Function and FPE in ARMAX
Hi, So, what does loss function and FPE in ARMAX mean. Also, for an AR(3) model how do I get the variance of white noise? ...
nästan 14 år ago | 0 answers | 0
0
answersQuestion
gmdistribution question
Is there a way I can print NlogL after each iteration instead just at the end of convergence with obj = gmdistribution.fit(X,k) ...
nästan 14 år ago | 1 answer | 0
1
answerTile an Image using pixels
Image Analyst about 9 hours ago The word tiling threw me - it doesn't sound like tiling like I usually hear it. So you're sayin...
nästan 14 år ago | 0
Question
Tile an Image using pixels
This is an assignment. The prof has provided us code to tile the images in Lush but since I am working in Matlab, I need to use ...
nästan 14 år ago | 2 answers | 0
2
answersQuestion
Reading .mat files
Please take a look at the location: http://scgroup20.ceid.upatras.gr:8000/tmg/ Under SAMPLE OUTPUT, you can download the fol...
nästan 14 år ago | 1 answer | 0
1
answerQuestion
Find in Array of Strings
how do i find the row number for 'STG' in the following array of names as: 'asf' 'poif' 'STG' 'iam' 'no'
mer än 14 år ago | 1 answer | 0
1
answerQuestion
Using java.util.hashtable
This is what I have for code: sheetName='Sheet2'; [numbers, strings] = xlsread('TestSheet.xlsx', sheetName); strings(...
mer än 14 år ago | 0 answers | 0
0
answersCSV vs MAT files
I am going to use the .mat files both in Matlab and R. R does have packages to load the .mat files. So, is .mat preferred or .cs...
mer än 14 år ago | 0
Question
CSV vs MAT files
Should I store very large amount of data as .mat files or .csv. Which is more: (1) efficient when it comes to reading the data ...
mer än 14 år ago | 4 answers | 0
4
answersQuestion
Matlab Optimizer
Is there any book/site where there are examples/exercises of coplex matlab optimization problems so that I can do them myself an...
mer än 14 år ago | 1 answer | 0
1
answerQuestion
Optimizer Question
This is an example of matlab optimizer: A =[-1 -2 -2; 1 2 2]; b = [0; 72]; x0 = [10; 10; 10]; [x,fval] = f...
mer än 14 år ago | 1 answer | 0
1
answerQuestion
char array comparison
I have a large char array and these are dates so the array has elements as: 20070801 20070802 20070803 etc. This array s...
mer än 14 år ago | 2 answers | 0
2
answersQuestion
Different kind of normalization
I have read in Matlab that normalization of a vector is u/norm(u). However, I have a matrix (N x N)where the columns are diff...
mer än 14 år ago | 3 answers | 0
3
answersQuestion
Storing Large data in matlab files
I have a giant loop and each loop produces giant vectors. Instead of storing this vectors in a giant matrix I am thinking about ...
mer än 14 år ago | 2 answers | 0
2
answersQuestion
Simple Matlab Random Number Generation
I have to get 5 random numbers a1, a2, a3, a4, a5 where each a1, a2, a3, a4, a5 should be between [-0.5, 0.5] and sum i.e. a1 + ...
mer än 14 år ago | 3 answers | 0
3
answersQuestion
Efficient Matrix Multiplication
I have A(2000x5000). I need to perform the following: P1 = A(:,1)*A(:,1)'; for i=2:5000 P1 = P1 + AA(:,i)*...
mer än 14 år ago | 1 answer | 0
1
answerQuestion
How can I read from .tar.zip without unzipping it? Part II
Okay, I will try to create the zip instead. So, my zip will contain 1.mat, 2.mat ,etc. How do I read these .mat files from the z...
mer än 14 år ago | 1 answer | 0
1
answerQuestion
How can I read from .tar.zip without unzipping it?
I have about 16gb of stock data which if unzipped is more than 200gb (hd of my pc). Is there way to read the files inside this f...
mer än 14 år ago | 1 answer | 0
1
answerQuestion
How do I create an array from one field of an array of structs?
I have an array of structs. Each struct has following: name (string) value (double) I want to create an array of names from na...
mer än 14 år ago | 1 answer | 0
