Jake

Actif depuis 2019

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Question

How can I extract specific weather data from a 3D grid?
I have two sets of data - one is measured data, and the other is obtained from The THREDDS Data Server (files are too big to att...

7 mois il y a | 1 réponse | 0

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Question

Plotting Polar Plots using time series data
I have time series data for angle and speed (sample attached). I can plot the angel on a polarhistogram as follows. load("sampl...

7 mois il y a | 1 réponse | 0

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Question

How can I filter a FFt signal to only show the main frequency?
I have the following code (a sample data file is attached). load("sample_signal.mat"); whos figure subplot(2,1,1) hold on...

8 mois il y a | 2 réponses | 0

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réponses

Question

Heatmap doesn't show the values
The heatmap figures I used to plot on Matlab had the values labeled in each cell (just like the documenation says), but now the ...

12 mois il y a | 2 réponses | 0

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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])....

plus d'un an il y a | 1 réponse | 0

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Question

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(...

plus d'un an il y a | 1 réponse | 0

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Question

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...

plus d'un an il y a | 1 réponse | 0

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Question

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...

plus d'un an il y a | 1 réponse | 0

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Question

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...

plus d'un an il y a | 1 réponse | 0

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Question

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...

environ 2 ans il y a | 1 réponse | 0

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Question

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...

environ 2 ans il y a | 2 réponses | 0

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Question

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...

plus de 2 ans il y a | 2 réponses | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 1

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Question

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 ...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 2 réponses | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 2 réponses | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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 ...

plus de 2 ans il y a | 3 réponses | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 1

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

1

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Question

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...

presque 3 ans il y a | 1 réponse | 0

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Question

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...

presque 3 ans il y a | 1 réponse | 0

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Question

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....

presque 3 ans il y a | 2 réponses | 0

2

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Question

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=...

environ 3 ans il y a | 1 réponse | 0

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Question

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...

environ 3 ans il y a | 1 réponse | 0

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Question

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...

plus de 4 ans il y a | 1 réponse | 0

1

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