Question

how to fit a signal using polynomial fit with hogher order?

I have a amplitude value with time period of a signal. I am trying to fit this signal by polynomial fitting. I have attached the...

2 months ago | 1 answer | 0

Question

How to arrange the values of the matrix according to index number?

I have index number of matrix A =[1 3 5 6], B= [ 2 4]. The values corresponding to index number matrix A is A1=[3 4 -7 5; 2 5 1...

2 months ago | 2 answers | 0

Question

How to find out the minimum error and its index number by comparing two coulmns of matrices?

I have 22 number of traces (sig1 & sig2 ) in two matrices. I have calculated two error matrices E1 (1 by 22) and E2 (1 by 22) fo...

2 months ago | 1 answer | 0

Question

Initialization of centroid for kmeans++ algorithm

I have applied simple kmeans algorithm for clustering of the datasets, which has dimension 1800 by 3. Now instead of kmeans, I w...

2 months ago | 1 answer | 0

Question

array dimensions must match in binary op

I am trying to perform this code 3D data but I am getting this error " array dimensions must match in binary op". To solve this ...

2 months ago | 0 answers | 0

Question

how to solve the array index problem in kmeans clustering for three dimensional data?

I have used a with dimension 100 by 3 of 10 signals for kmeans clustering. So, I have used it as a three dimensional dataset of ...

2 months ago | 0 answers | 0

Question

how to find out the index with its value from cell arrays?

I have two cell arrays. In one cell, there is a value of the matrices with dimension 100 by 10 and other cell there is row and c...

2 months ago | 0 answers | 0

Question

how to store the matrix value in cell array?

I have matrix C=100 by 10 and I want to store the values of matrix in cell array. The code is not working. Please help me on th...

2 months ago | 1 answer | 0

Question

How to find out the index number of particular value from three dimensional matrices

A(:,:,1)= [1 0 0 0 1 0 1 0 1] A(:,:,2)= [1 1 0 1...

2 months ago | 1 answer | 0

Question

How to compute weighted probability for nitialization of centers using kmeans++? How kmeans++ is differ from kmeans?

load dara1.dat; nc=4; niters=100; [r,col]=size(data1); p=randperm(r); p=p(1:nc); c=data1(p,:); id=eye(nc); for n=1:niter...

3 months ago | 0 answers | 0

Question

how to specify the particular column numbers of a matrix in for loop

I have a matrix withy dimension 1801 by 88. I want to select the column number 70:75 in for loop for analysis. If I start with ...

4 months ago | 1 answer | 0

Question

How to transform time series into frequency dimain and obtain amplitude and phase

clc; clear all; load data.dat; time=0:2:3600; time=time'; nn_ss=data(1:1800,1:88); for jj=1:88 ss_nw = nn_ss(:,jj...

5 months ago | 1 answer | 0

Question

how can determine phase from FFT

I have written a code, where I have matrix dimension 1801 by 88 and when i am running the code, phase is obtained. But in foor l...

5 months ago | 0 answers | 0

Question

k-means clustering algorithm

I have a data with dimension 1801 by 88, to be clustered into k regions. Intially, all the centres are assigned randomly. the '...

5 months ago | 0 answers | 0

Question

how to create struct array

I have struct array, in where the traces are having dimension 1801 by 88. I want to replace the thta traces with same dimension ...

5 months ago | 0 answers | 0

Question

How to perform kmeans alogorithm through coding?

I am trying to denoise the image using moving k-menas algorithm in matlab code. The code I have wriiten is not working because s...

5 months ago | 0 answers | 0

Question

how to do normalization of a matrix

I have a matrix wity dimension 100 by 50. Now i want to normalize the matrix by doing normaization of each column. I want to nor...

6 months ago | 1 answer | 0

Question

How to creat ricker wavelet with specific sampling interval

I would like to know about ricker wavelet generation with sampling interval 0.001ms without using ricker functuion? please help ...

6 months ago | 0 answers | 0

Question

How to find out index number bewteen two arrays

I have two matrices with different columns number and single row: A=[ 11.6 56.9 30.5 80 34 78.98 34.01 3 1.5] and B=[56...

8 months ago | 1 answer | 0

Question

How to store values in matrix with similar index number of other matrix?

I have one matrix A=[1 2 1 3 3 2 2 1 3 ] and another matrix B=[72 24 67]. Now want to generate new matrix with the values i.e ...

9 months ago | 1 answer | 0

Question

How to visualize Umatrix in SOM?

Hi, I am learning SOM for Umatrix representation. When I plot Umatrix, I am getting reverse representation of it. Higher color v...

10 months ago | 0 answers | 0

Question

calculation of Umatrix in Self organising map

I am trying to calculate Umatrix to visualize the resulting SOM mapping by computing the distances between adjacent neuron by us...

10 months ago | 0 answers | 0

Question

How to do average of different arrays of a matrix?

I have a matrix having dimension 3490 by 63 and I want make it 698 by 63 by taking average of five data points of different row ...

11 months ago | 2 answers | 0

Question

hoe to estimate the coefficients from curve fitting?

I have 467 number of signal and each one is representing gaussian distribution. Matrix size is 63 by 467. I want to find out the...

1 year ago | 0 answers | 0

Question

How to combine multiple curves to create one single curve or combining multiple curves to generate single average density curve

I have 92 types of curves those are similar types to one another. Now, I want to combine all 92 types of curves and calculate it...

1 year ago | 1 answer | 0

Question

How to measure the similarity between two signal?

I have a matrix which contains 100 types of signal i.e. the dimension of the matrix is 30 by 100. I want to find out the similar...

1 year ago | 1 answer | 0

Question

How to calculate average and density function of multiple curve?

I have multiple (mainly 5 types of curves) curves. And I want to calculate the average of same types of curves and take its dens...

1 year ago | 0 answers | 0

Question

How to change color of any image or plotting to hsv color mode?

Actyally, I have the value of two principal components of data and the classes of the data sets and also colorvalue. Now I want...

1 year ago | 0 answers | 0

Question

How can I represent a map with different with color value

I have 4 array, in which first one is depth value, 2nd one is classification, and the last three columns are color value. I want...

1 year ago | 1 answer | 0

Answered

How to train data using SOM and map the resukts on data

It is not working properly. For I have simply calculated best matching unit after training which gives proper classification. An...

How to train data using SOM and map the resukts on data

It is not working properly. For I have simply calculated best matching unit after training which gives proper classification. An...

1 year ago | 0