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Content Feed
How to tweak an equation to properly fit a dataset using lsqcurvefit?
“Think??” Makes me chuckle :) Interesting plot and interesting that all pressures are unique.
5 jours il y a | 0
How to tweak an equation to properly fit a dataset using lsqcurvefit?
@Juneight, {Edit: Dimensional analysis needs changing because now you say x3 is [Pa] and before you said x3 is [m]. You sai...
7 jours il y a | 0
Why does my random walk simulation come out so weird?
@Kevin Nelson, Your formula introduces an increaing probability of "stay the same on each step" as M, the number of walks, grow...
7 jours il y a | 0
My graph is not picking up my time increments, its suppose to have a nice curve, but its coming out as a straight line.
@BAILEY MCMASTER, clear Ts=30; % ms Td=60; % ms Chs=.001; % L/mmhg Chd=.015; % L/mmhg N=800; % number of elements t=0:1:8...
7 jours il y a | 0
| A accepté
Multiple errors- Not that great at Matlab :(
@azaandria, It looks like 3 errors but it is really only one error. Error using DynamicResponse/parfor%supply_1 Index in posi...
10 jours il y a | 0
help me with for loop
@nirwana, @Stephen23 knows more about Matlab than almost anybody. When he says "I doubt there is much of a difference", I think...
10 jours il y a | 0
Largest portion of largest correlation coefficient
@Roohollah, I will suggest an approach, but first, why do you want to do this? It sounds suspicious: like you are selecting a ...
10 jours il y a | 0
calculate volume from iso-surface coordinates (x,y,z).
@Raju, Find the delaunay triangulation of the 3D points with DT=delaunay(x,y,z); This gives a set of tetrahedrons which fill...
11 jours il y a | 0
Take the product of two probability density function histograms generated from data
@David Gillcrist, Since you did not provide data, let's create some. x1=rand(10000,1)+rand(10000,1); % pdf(x1) = triangle fr...
11 jours il y a | 0
| A accepté
Extract Epoch from EEG signal at Matlab without EEGLab
@Apkbark, The answer depends on the file structure. Different EEG machines save data in different formats. You will need to u...
13 jours il y a | 0
Solving system of odes with a power using ode45
@Thomas TJOCK-MBAGA, Yes you can do it with ode45(). dX/dt = -0.000038*X - (X*(X/Xinit)^frac)*rext dY/dt = - 0.000038*Y + re...
13 jours il y a | 1
Random number generate - Specific values
@Guilherme Lopes de Campos, x=[7,8.5,9.625,12.25]; z=x(randi(4,1,7)) % 7 randomly selected from x z=x(randi(4,1,5000)); % 5...
13 jours il y a | 0
How to make a nonperiodic signal periodic?
@Matthew, If your goal is for the signal to repeat so that x(7...14)=x(0...7), and x(-7...0)=x(0...7), then I recommend using m...
13 jours il y a | 0
How do I change datetime values?
@Marcus Johnson, dt1=datetime(1978,12,1)+(0:1/24:23/24); % each hour of the day dt1.Format="yyyy-MM-dd HH:mm"; disp([dt1(1), ...
13 jours il y a | 0
| A accepté
How to optimize the problem?
@Hamid Iftikhar, We know from symmetry that the best collector angle will be when the collector points south, i.e. when collect...
14 jours il y a | 0
| A accepté
How to optimize the problem?
@Hamid Iftikhar, You ask: "How can I get beta and Z as optimum scalar value that generate whole vector 'th' with values less th...
14 jours il y a | 1
Inertial Sensor Noise Analysis With Varying Frequency
@Tanner, [edit: fix typos] You do not have to set maxNumM=250 just because your sampling rate is 250 Hz rather than 100 Hz. Yo...
14 jours il y a | 1
| A accepté
How to determine stability of transfer function from Nyquist?
@Ali Almakhmari, The answer depends on the form of the transfer functions which you have. Do you have hundreds of polynomials...
18 jours il y a | 0
| A accepté
Function "diff" and the loss of an element in the array
@Bryan Ambrósio, [edit: changed the code for plotting d2xdt2. The plotted result is unchanged, but the new verison of the code ...
19 jours il y a | 0
Units for define max, min and sampling frequency
@Luis Jesús Olvera Lazcano, You call bandpass() as folows: frecuencia_min = 1 / 80; % Min frequency (cycle/day) frecuencia_ma...
19 jours il y a | 0
| A accepté
Magnetic Declination in IMU filter
@Mohammad Reza Ramezani, I am confident that the algorithm does not account for magnetic declination. We called it compass var...
19 jours il y a | 0
can you help me with the Y axis of my graph?
@Laura, I'm not sure what you want the graph to look like. The tiny amplitude of the fluctuations, on top of a large DC value, ...
19 jours il y a | 1
| A accepté
Finding the how much two curve got shifted ?
@Amit, [edit: I tried xcorr() and did notlike the results. xcorr() does not have a normalization option that I like. Theref...
20 jours il y a | 1
| A accepté
Data analysis - How to recognize local peaks/different areas?
@Jonas Chlechowitz, [edit: I attached each data file twice, by mistake. Removing the extra files.] You should fix the points t...
20 jours il y a | 1
Solve differential and algebraic equation system
@Surendra Ratnu, [edit: added several comments] Your code includes y0 = [0.1; 0.3024; 1.5725; 0.10]; t = [0 pi]; [t,y] = od...
21 jours il y a | 0
FFT of vibration data doesnt show frequency peaks on plots
@Mason Landrum, Whatever it is, it is slow: 2 mm in 15 minutes. Your vector for the frequencies that go with the FFT was incor...
21 jours il y a | 0
| A accepté
How to rotate a pointcloud data and align parallel with y-z axis?
@Mathanraj, xyz=xlsread('CS_DATA.xls'); C=cov(xyz); [V,D]=eig(C); % eigenvectors and eigenvalues of the covariance matrix d...
21 jours il y a | 0
please I need help to complete the descriptive statistics and representation of the following figures.
@Ebolo Nkongo, fileIn="global-analysis-forecast-bio-001-028-monthly_1693423231336.nc"; t=ncread(fileIn,'time'); The time data...
21 jours il y a | 1
| A accepté
Reformat and Merge Date and Time columns
@Douglas Leaffer, load('RVdata'); dt1=data.(1)+(3600*hour(data.(2))+60*minute(data.(2))+second(data.(2)))/86400; dt1.Format='...
21 jours il y a | 0
| A accepté
how do you offset curves?
@Kathleen, Please post the simplest verion of the problem and the code that illustrate the problem you are trying to solve, to ...
22 jours il y a | 0
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