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...

23 days 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...

28 days 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 '...

29 days 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 ...

1 month 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...

1 month 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...

2 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 ...

2 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...

4 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 ...

5 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...

6 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...

6 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 ...

7 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

Question

How to convert color value to color

I have a four array, where first one represent the classification (I have two classification: 1 and 2) and rest of the three are...

1 year ago | 0 answers | 0

Question

How to campare index number of a matrix with other

I have two array. A=[ 9 8 5 4 4 10] and B=[1 1 1 3 3 3 2 2 1 1]. Now, I want to campare A and B. The index number of each elemen...

1 year ago | 2 answers | 0

Question

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

Pleases help me. I am stuck in how to train data using SOM and map the results on data. I am using the data file, having dimen...

1 year ago | 2 answers | 0

Question

How to train data using self organising map?

I have a data with dimension 289 by 30. And I want to train the data using SOM to classify the data. How to classify the data us...

1 year ago | 0 answers | 0

Question

How to reconstruct the image after applying SOM

I have applied SOM to classify the data and now I want to reconstruct my output image after classification. Now I have got three...

1 year ago | 0 answers | 0

Question

How to generate manifold space for visualization of different features?

I want to visualize different features in 2D manifold space and 2D latent space.

1 year ago | 0 answers | 0

Question

How to visualize 2D map for different classes of data using SOM

I have used SOM usning somtoolbok and classify the into 3 different classes. I have got the U-matrix also. But, now I want to ma...

1 year ago | 0 answers | 0

Question

how can I determine amplitude, phase and frequecy in FFT?

The signal I have attached like this. If I give the L value is equal to length of time, the value is 1501. But frequency matrix ...

1 year ago | 0 answers | 0

Question

How to contour different cluster unit?

I have performed clustering algorithm (GMclustering), where I have got three different cluster units. But there only one contour...

1 year ago | 0 answers | 0

Question

Gaussian mixture model clustering

How to GMM clustering for any type of datasets

1 year ago | 0 answers | 0

Answered

How choose matrix size for u-matrix visualization in self organising map of data

I have a data with dimension 1135 by 30, where each oh row representing the amplitude distribution at aparticular depth. That me...

How choose matrix size for u-matrix visualization in self organising map of data

I have a data with dimension 1135 by 30, where each oh row representing the amplitude distribution at aparticular depth. That me...

1 year ago | 0