Community Profile # Ass

Last seen: 10 days ago Active since 2019

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Question

How to fit curve using for loop?
I have a 15 number of signals with data point 64 in each. I want to use loop to fit all the signals with fittype 'gauss2' and pl...

14 days ago | 1 answer | 0

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Question

How to convert .java file to .mat file?
I have a.java file and want to run in matlab by convert it into .mat file. How to do this conversion?

1 month ago | 1 answer | 0

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Question

How to generate colormap for specific matrix?
I have matrix with values and corresponding index number or class number. I want to generate a colormap based on the values of t...

3 months ago | 1 answer | 0

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Question

How to calculate the area under curve?
I have attached a curve in which x axis is time and y axis is amplitude. How to calculate the area under this curve.Please sugge...

5 months ago | 1 answer | 0

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Question

How to genarate gaussian curve from another gaussian curve?
I have the data points of the red curves and I want to generate the blue curve from red curve. The area difference between two c...

5 months ago | 0 answers | 0

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Question

How to get back the values of a curve from its cumulative integral value?
I have a amplitude distribution with time ( i.e. real curve, blak line). Then I did cumulative trapezoidal inegration of the cur...

7 months ago | 1 answer | 0

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Question

What is exactly the kmeans ++ algorithm? How do I write in code?
I have used regular som, where initialization is done by random initialization. I want to apply weighted kmeans for initializati...

11 months ago | 1 answer | 0

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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...

1 year ago | 1 answer | 0

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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...

1 year ago | 2 answers | 0

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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...

1 year ago | 1 answer | 0

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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...

1 year ago | 1 answer | 0

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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 ...

1 year ago | 0 answers | 0

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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 ...

1 year ago | 0 answers | 0

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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...

1 year ago | 0 answers | 0

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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...

1 year ago | 1 answer | 0

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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...

1 year ago | 1 answer | 0

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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...

1 year ago | 0 answers | 0

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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 ...

1 year ago | 1 answer | 0

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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...

1 year ago | 1 answer | 0

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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...

1 year ago | 0 answers | 0

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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 '...

1 year ago | 0 answers | 0

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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 year ago | 0 answers | 0

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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 year ago | 0 answers | 0

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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...

1 year ago | 1 answer | 0

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Question

How to creat ricker wavelet with specific sampling interval

1 year ago | 0 answers | 0

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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...

1 year ago | 1 answer | 0

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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 ...

1 year ago | 1 answer | 0

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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...

1 year ago | 0 answers | 0

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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...

1 year ago | 0 answers | 0