# Jake

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Question

How to compare data series?

Suppose, I'm performing five time-domain simulations with 5 different coefficient values (say beta = [0.2, 0.3, 0.4, 0.5, 0.6])....

2 maanden ago | 1 answer | 0

### 1

answerQuestion

How to find Quadratic Damping?

Hi, I have a time series data set from a motion decay test (sample attached). load('sampleData.mat'); % whos figure plot(...

4 maanden ago | 1 answer | 0

### 1

answerQuestion

How to plot direction of forces on a body with polar plots or similar?

I'm simulating the forces acting on a stationary object. I have a data sample of a time series that includes Forces, and the dir...

4 maanden ago | 1 answer | 0

### 1

answerQuestion

How to Curvefit amplitude output of a spring-mass-damper system to find coefficients?

First of all, I'm not sure if the title gives the right idea, and if this is possible. If that's the case, my apologies in advan...

4 maanden ago | 1 answer | 0

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answerQuestion

How to build and use a LowPass (or HighPass) Filter in real-time in a time domain simulation?

I'm new to control aspects and have not worked with filters before. I've been reading up on the documentation provided by Matlab...

5 maanden ago | 1 answer | 0

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answerQuestion

Why am I getting two different data arrays with the same set of data?

The title is a bit ambiguous, but I will try my best to explain. I have a 4-D complex data set (see attached). First, I'm wri...

ongeveer een jaar ago | 1 answer | 0

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answerQuestion

A little help with translating a piece of Fortran code to Matlab

I know this is bit of an odd question, and I'm sorry if this is against any community rules. I'm troubleshooting a Fortran cod...

ongeveer een jaar ago | 2 answers | 0

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answersQuestion

How to interpolate from a dataset using interp3?

Hi, I have a dataset (4-D complex double) of dimensions 32 x 31 x 21 x 6. The first three parameters 32x31x21 defines two frequ...

ongeveer een jaar ago | 2 answers | 0

### 2

answersQuestion

Help on solving nonlinear coupled equations with Runge-Kutta approach

I have the following piece of code. I'm providing a "piece" here, since the full code is quite lengthy and I think the following...

meer dan een jaar ago | 1 answer | 1

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answerQuestion

Help with solving a system of coupled equations of motions in time domain?

Hi, I've posted a similar post here, and I learned much through that post and comments. Now, I'm building on it and the system ...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

How to combine two vectors column-by-column?

I have two matrices, A and B. A = [1,3,5,7,9,11,13,15] B = [2,4,6,8,10,12,14,16] How can I combine these two to give me a thi...

meer dan een jaar ago | 2 answers | 0

### 2

answersQuestion

How to sum up every other column of a matrix?

Suppose I have a matrix A, A=[1 2 3 5 1 2 3 5;3 4 6 7 1 2 3 5;5 6 8 9 1 2 3 5] How can I sum up column(1) and column(3) to for...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

readmatrix ignores the first line of the data file

I'm trying to read a text filw with over 226,600 rows with readmatrix (sample is over 5MB so I couldn't attach it here). The fir...

meer dan een jaar ago | 2 answers | 0

### 2

answersQuestion

How to read a specially structured data file with different structures

I asked a similar question on the forum only to realize that I had worded it poorly and incompletely. My apologies for the repet...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

How to read a specially structured data file

I have a *.5P file (file is an output from the software WAMIT, and can be read by Matlab and/or any text editor) that I want to ...

meer dan een jaar ago | 3 answers | 0

### 3

answersQuestion

Why doesn't my plot "go to infitnity"?

Probably a silly question, but I couldn't figure out the reason! I have, x = [0.00,0.10,0.19,0.29,0.38,0.48,0.58,0.67,0.77,0.86...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

How to Interpolate coordiantes and values of a surface plot

Hi, I have a set of coordinates that creates a mesh - i.e. XYZ coordinates of a set of quadrilateral panels that creates a mesh...

meer dan een jaar ago | 1 answer | 1

### 1

answerQuestion

How to sum up multiple cell arrays (column-wise)?

I have a set of data in the form of a 26x32 cell array. Each cell consists a 6x6 matrix. I have attached the dummy file here. H...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Can I change iteration value in following for loop?

Suppose I have the following code. nf1 = 3; nf2 = 4; panel_no = 1:12; R_vx = rand(144,1); for i = 1:nf1 for ii = 1:nf...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Help with storing data in a 4-D double matrix

I have a data set in the form of 8 columns. I have attached a dummy xlsx file to show the data structure. As it can be seen, th...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

How to solve a system of coupled, differential equations of motions?

Hi, This follows a previous post that I posted, where I was wrong with formulation and assumptions. I learned the mistake there...

meer dan een jaar ago | 0 answers | 0

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answersQuestion

How to solve a system of coupled, non-homogenous differential equations of motions?

Hi, First, I must say that I'm still learning the mathematics behind the governing equations, and I know I have a long way to g...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

How to check if two planes intersect with each other?

Suppose I have two planes defined by four points (each) as follows. For ease of explanation, I will follow a graphical approach....

meer dan een jaar ago | 2 answers | 0

### 2

answersQuestion

Store mxn matrix within a for loop

How can I store results of a for loop when one iteration gives m x n matrix and not a 1 x n matrix? a = rand(20,12); for k=...

bijna 2 jaar ago | 1 answer | 0

### 1

answerQuestion

How can I store all outputs from a nested for loop?

I know this might be a common problem, and tried a lot of different answers posted under similar questions. Anyway, here's a bas...

ongeveer 2 jaar ago | 1 answer | 0

### 1

answerQuestion

How to replace values of a vector based on the values of another vector?

I have two vectors that together create a cartesian grid, such as this. xmin = 0; xmax = 500; ymin = -200; ymax = 200; c...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

How to set ticks in imagesc colorbar based on a matrix value?

I'm using imagesc to display a graph/image, and I'm having trouble with the piece of code dislpayed here - specifically the tick...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

How can I interpolate a datetime data series to have an interval of 1 minute in MATLAB?

Hi everyone, I'm analyzing a sample dataset from a .csv file (Attached). The columns are: "Ref number, MMSI, Latitude, Longitud...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

How to create matrices from a table and extract specific data from it to make plots?

I'm sorry if the title is confusing. But I'm stuck at a point and I will appreciate any tip or help! I'm reading a series of AI...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

Create matrix from 2 columns of a csv file

A CSV file includes all my data in seperate columns and I'm trying to extract them separately for analysis. I'm using MATLAB R20...

meer dan 3 jaar ago | 1 answer | 0