Answered
plot magnitude data at location (x,y,z)
@Jorge — Try this — LD = load('data') x = LD.data(:,1); y = LD.data(:,2); z = LD.data(:,3); c = LD.data(:,4); figure ...

2 years ago | 0

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Answered
Getting error message when running Runge Kutta solution...
I’m not certain what you’re modeling. First, using norm to return a scalar solves the first problem of the differential equaton...

2 years ago | 0

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Attempting to fit data with a sigmoid curve, but not an option in curvefitter toolbox
Perhaps something like this — s = fittype('a/(1+exp(-b*(x-c)))', 'Coefficients',{'a','b','c'}, 'Independent','x', 'Dependent',...

2 years ago | 0

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Difference between local time and "created_at
To illustratte — TZ = timezones("Europe"); disp(TZ) MessageTime = datetime("2024-08-21T16:54:31Z", 'InputFormat','yyyy-MM-dd...

2 years ago | 0

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Can anyone help me for knowing the options of genetic algorithm?
To list them all — opts = optimoptions(@ga) Change the ones you need to change. This is a structure, so to display 'Functi...

2 years ago | 0

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Having issues installing Imaging Processing Toolbox
Contact Support

2 years ago | 0

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How to filter out the noisy portion of contourf plot?
By inspection, the longest part of the contour is likely the one you want to keep. It is relatively straightforward to find thi...

2 years ago | 0

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I need help for optimization using Ga
Perhaps something like this — figure imshow(imread('Messenger_crea...ef71aba6.jpeg')) x = [1 2.5 10:10:100]; simulated = ...

2 years ago | 0

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Find the ratio or difference spectra as time progresses
If the spectra are vectors and have a relatively flat baseline (I am not certain what your spectra are, since they can be mass s...

2 years ago | 1

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Answered
How to calculate HF/LF from ECG data
I have no idea what you want, since you did not define either ‘LF’ or ‘HF’. Try this — % Txt = fileread('ecg.demo.txt') T1...

2 years ago | 1

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Is Wilcoxon test appropiate for the comparison of large, independent, nonnormal datasets?
Since we’re likely discussing the lognormally distributed data you previously described, and since this is an unpaired comparisi...

2 years ago | 1

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How to fit power-law to each column of data arranged in a table?
It might be best to put all the parameters in a single table, and for that matter, put everything in a single table. Since yo...

2 years ago | 1

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Answered
Draw a line between a point, which has non-normalised coordinates, and a legend, which has a normalised position
I wrote my osn set of utility functions for my own use for these sorts of problems. The approach I use here is to find the norm...

2 years ago | 1

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Answered
Fill color inside stair.
The stairs plots are relatively straightforward to work with, however it is necessary to get their outputs in order to plot the...

2 years ago | 2

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To RESHAPE number of elements must not change
An alternative to reshape that you may want to use instead is the Signal Processing Toolbox buffer function. With a vector inpu...

2 years ago | 0

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How to datasample exponential data without losing the exponential decay?
Your data are not exponentially distributed, however they are convincingly lognormally distributed. They do not have a corres...

2 years ago | 2

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Answered
How i get a graph that i attached here with this matlab code?
One problem is that ‘term4’ and therefore ‘u2’ and ‘u’ should be functions of ‘phi’ and they are not originally. However chang...

2 years ago | 0

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How To Create a Space Between Edge of a Plot and The Y-axis LineTick?
No data,m so I can’t run your code. That aside, try this — x = 0:0.1:10; y = randn(size(x)); figure plot(x,y) grid ...

2 years ago | 0

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Plotting multiple datasets on one plot
I have no idea what your data are. The red plots are plotted last, so if the values are similar, it is likely that they are ...

2 years ago | 0

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Answered
how to put a bar above a letter in MATLAB equation?
You have to specify 'Interpreter','latex' as well. text(0.5,0.5,'$\bar{x}$', 'Interpreter','latex', 'FontSize',20) .

2 years ago | 0

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Add a title to a group of 4 subplots centred at the top
Use the sgtitle function (introduced in R2018b). It works with subplot and tiledlayout figures.

2 years ago | 0

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hi, find the value of x theoretically?
The symbolic approach will not work, however I left the symbolic code in (commented out) in case you want to experiment with it....

2 years ago | 0

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How to fit kinetic model to estimate kinetic parameter from experimental data
I got this to run (there were a number of coding errors, most of which I corrected). However it takes too long to run here, so ...

2 years ago | 1

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How to fit a nonparametric distribution to a sample of known percentile values
The empirical cumulative distribution function ecdf would likely bea appropriate here. (There is also ecdf however it seems les...

2 years ago | 0

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How to give range of cells different variable names?
It might help to have the file. Otherwise, conbbsider specifying the variable names as (for example): TABLE.Properties.Vari...

2 years ago | 0

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Finding multiple Matrix in a txt file
This works. It is not as elegant as I would like, however I cannot imagine any other way to parse this file. The variable na...

2 years ago | 0

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how i can modifiy the code to make the bandwith of fft less ?
Add: xlim([0 1.5E+3]) after the plot call to distinctly see the two peaks. Tweaked code — % Read the CSV file, automatic...

2 years ago | 0

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How to draw a semi-circular heat map?(怎么画半圆形的热力图)
The general approach would be to create a rectangular array first, and then use the cart2pol function to create it as a semicirc...

2 years ago | 0

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how to azimuthally average a N*N data ?
I seriously doubt that what you want to do is possible, simply because your data do not work that way, Likely the best you ca...

2 years ago | 0

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finding the minimum of a function input with a parameter
If you want to constrain the optimisation, one approach sould be to use the Optimization Toolbox fmincon function. Example —...

2 years ago | 0