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**Content Feed**

Question

A quick way to make sure the columns in each row are decreasing for matrix A

Hello everyone, I have a matrix A with 100 rows and 20 columns. I would like to ensure that for evry and each row "i", the va...

ongeveer een jaar ago | 1 answer | 0

### 1

answerQuestion

Training a neural network that can map random variables to timeseries

Hi All. I have a numerical model, which accepts the vector X ( say three real parameters), and generate two timeseries y1(t), an...

ongeveer een jaar ago | 0 answers | 0

### 0

answersK-mean Clustering

Plese see: https://www.mathworks.com/help/stats/kmeans.html. If your data is in a matrix format X, then you can use the followi...

meer dan 2 jaar ago | 1

How to use spline interpolation to find intersection point of two lines.

How about this? clc clear all x = -10:1:1; y1=-x; y2=x+6; %spline1 s1 = spline(x,y1); %spline 2 s2=spline(x,y2); % fin...

meer dan 2 jaar ago | 0

| accepted

Question

How to remove the for loop from the following code?

'Index' is an array of length N. Every elemnt of the array Index is an integer (from 1 to 7) "xxtr" is a sample matrix with siz...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

Plotting 2D curves with specific colors for certain curves

Hi all. I have 1000 simple 2D curves (data = rand(1000,20)). X axis for all is from (x=1:20). Each curve has an index between 1 ...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

Gaussian process regression optimization

Can anyone please let me know how can I exclude some Kernel functions from being optimized in the following regression process? ...

meer dan 2 jaar ago | 0 answers | 0

### 0

answersQuestion

extract data from a 1D vector with a pattern

I have a 1D vector A=[1:1000]. I would like to start from the first elemnt of A and automatcially extract every first 16 elemnts...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

How to do logarithmic downsampling

How to downsample the data in a vector by only keeping n samples per each log-cycle? For example I would like to downsample the ...

bijna 3 jaar ago | 0 answers | 0

### 0

answersQuestion

Matlab clears persistent and global variables in fmincon when activating UseParallel

It seems matlab clears all global and persistent variables within the objective function when using "UseParallel" in fmincon. I ...

bijna 3 jaar ago | 1 answer | 0

### 1

answerQuestion

Kill a system process if it takes too long

I use a system command to run an external program PERR that takes the input file DATA.data + some other arguments to run. After ...

bijna 3 jaar ago | 1 answer | 0

### 1

answerQuestion

A Suitable Machine Learning Technique to Learn Y=f(X,t)

I have a blackbox model that accepts an input vector X (variables) and gives three outputs Ys but as a function of time Y1(t), Y...

bijna 4 jaar ago | 1 answer | 0

### 1

answerSolve for ODE question

This is similar to an SIR model. There are plenty of simple to complex source code for this https://www3.nd.edu/~nancy/Math2075...

bijna 4 jaar ago | 1

| accepted

Question

Some workers go idle in parfor creating a waste of computation time

Hi all, I have a for loop of 90 iterations (array xx has 90 rows and say 20 colums - each row is an iteration). Each iteration ...

bijna 4 jaar ago | 1 answer | 0

### 1

answerQuestion

Matlab parfor on Slurm

Hi All, I want to run a parfor on matlab using Slurm job submission on the cluster. I want to use 15 workers for the parfor. E...

bijna 4 jaar ago | 1 answer | 0

### 1

answerQuestion

Is there a quick way to put the contents of all subfolders to the parent folder

Hi, I have a folder (A) with lots of subfolders say RL1,RL2, ....RLn. Each subfolder has different contents. Is there any way...

ongeveer 4 jaar ago | 0 answers | 0

### 0

answersQuestion

Using parfor with a structure

Hi All. I have a qyucik question on the use of parfor and an structure: A code I have runs perfectly with for loop as follows: ...

ongeveer 4 jaar ago | 1 answer | 0

### 1

answerQuestion

Make matlab write to a text file WITHOUT scientific notation.

Hi there, I have a matrix say 5*5. The matrix contain some numerical values with many digists shown in scientific notation. I ...

ongeveer 4 jaar ago | 1 answer | 0

### 1

answerQuestion

How to delete the columns of a cell array if the last elements of the columns are zero

Hi All, I have a large cell arry PP with three rows and lots of columns as follows: 'A.txt' 'A2.bmp' 'A5.jpg' 1.1 1.3 1.4 ...

bijna 5 jaar ago | 1 answer | 0

### 1

answerQuestion

Open a jpg picture for each data point by clicking on the plot

Hi there. I have a simple 2D data set (x,y). Each point (xi,yi,i) (i=0,..n) corresponds to a JPG picture. The JPG names are (0....

ongeveer 5 jaar ago | 1 answer | 0

### 1

answerQuestion

replacing the content of a text file

Hi all. I have a text file "A.txt". I have a string S='Hello World'. How to delete from line 10 to the end of file in "A.tx...

meer dan 5 jaar ago | 1 answer | 0

### 1

answerQuestion

Precision lost when change numbers to string

Hi I am trying to use the following to generate a string. A is is 1D array containing 4 real numbers that have large decimal pr...

ongeveer 6 jaar ago | 2 answers | 0

### 2

answersQuestion

Generate a single string from a matrix (or cell)

Hi. I have a vector A that is [1:5]' and also I have a string 'Hi'. (I just use a of length of 5 for simplicity, but can be la...

ongeveer 6 jaar ago | 1 answer | 0

### 1

answerQuestion

Logarithmic spaced vector with a known sum

How to generate n logarithmic(or geometric) spaced numbers between a and b such that sum of them be a real number A ?

ongeveer 6 jaar ago | 0 answers | 0

### 0

answersQuestion

Function counts using parallel Fmincon

Hello all, I would like to use parallel fmincon. The function receivea an input vector X, generates a file name say Filei.txt...

meer dan 6 jaar ago | 1 answer | 0

### 1

answerQuestion

Only upper triangle part of plotmatrix function

Hello, Is it possible to only plot the upper triangle part of the matrix plots when using 'plotmatrix' function? matrixplot ge...

meer dan 6 jaar ago | 2 answers | 0

### 2

answersQuestion

Delete lines n to m in many text files

Hello there, I have 500 text files with names R1.txt to R500.txt. How can delete lines 5002 to 5012 from all the text file...

meer dan 6 jaar ago | 2 answers | 0

### 2

answersQuestion

parfor and persistent variables

Dear all, I have a matlab function that accepts a set of parameters say (query array), generates a unique input data (text) f...

meer dan 6 jaar ago | 1 answer | 0

### 1

answerQuestion

Creating a Parfor loop for multiple function evaluation

Hello. I want to use parfor to reduce the calculation time for a loop I have by evaluating 6 functions at the same time. Could y...

meer dan 6 jaar ago | 1 answer | 0

### 1

answerQuestion

Running an external program from matlab linux

Hello. I have an external program called Lin.exe. This program accept (read) one file and write to another file. In windows cmd...

meer dan 6 jaar ago | 1 answer | 0