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Model identyfication from plot
You will need to use the System Identification Toolbox for this. If you have both the input and output time-domain signals, sta...

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I need answers can you please answer
Nodal Analysis

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mean function gives an error but not median
That you are getting theee error: Array indices must be positive integers or logical values. indicates that somewhere in your...

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Black horizontal patches in the plot
Those sorts of horizontal liines are usuallly caused by unsorted data. Experiment with sorting the latitude as well: [longitu...

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Importing a PDF Bank Statement into MATLAB and splitting transactions correctly
The Text Analytics Toolbox has several functions that can be used to extract data from PDF files. See the documenntation sectio...

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How to find the area between two lines of different size matrices and fill that area?
It would be helpful to have your data. That aside, the problem with your patch calls is that your data are column vectors a...

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Band pass filtering of time series data
The problem is that the sampling frequency is 1 sample/minute, making the Nyquist frequency (the highest uniquely resolvable fre...

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Changing Plot colors while using fitlm
I’m not sure how this works in R2019a, however if you don’t specify any specific colours in the plot calls, each plot has differ...

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readtable error after r2014a --> r2022b upgrade
Try one of these — t = readtable('test.txt', 'Delimiter',";"); or: t = readtable('test.txt', 'Delimiter',{';'}); The only ...

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Best way to plot a surface whose matrix has values of +/- infinity
Without the actual matrices (or representative matrices), it is diifficult to determine what is best. Note that fillmissing w...

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how to read the data of type a*b?
Taking a wild guess that the ‘multiiplicatiion’ operators are equivalent to the ‘power-of-10’ indicator ‘E’ or ‘e’, first use st...

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For 3D surface plots, do you like the command, 'shading interp'?
There are a few options that you can experiment with — [X,Y] = ndgrid(-5:0.5:5); Z = exp(-(X.^2 + Y.^2)/10); figure sur...

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Iteratively selecting rotation angle for alingment
I do not understand what you are doing or want to do. Calculating the RMSE implies that you have something you want to compare ...

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finding the endpoints of an skeleton
Search the File Exchange for skeleton endpoints.

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how to cleanly ensure column type in table is numerical
It reads them correctly in R2024b. Use the detectImportOptions and setvartype functions to set them to 'double'. (I can’t te...

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From making 2D line plots to making 3D surface plots: How to preserve my current workflow?
Theree is not enough information proviided to determine what the problem is. If ‘i’ and ‘j’ are scalars, or matrices conformabl...

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Problems in installing Symbolic Math Toolbox
pngs = dir('*.png') for k = 1:numel(pngs) figure imshow(imread(pngs(k).name)) end First, if you haven't alrea...

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Value Function Iteration: Unable to perform assignment because the left and right sides have a different number of elements.
Here: [w, ind] = max(W); %take max of W The ‘W’ variable is an empty double vector, so ‘w’ and ‘ind’ are also. It’s not po...

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How to estimate parameters of fractional SIR epidemic model?
See for example Parameter Estimation for a System of Differential Equations You have to define your differential equation...

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extract max and min frequency of a spectrum
There are some Signal Processing Toolbox functions that may do what you want. See for example the powerbw function. There ar...

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Modern software should not do this, something annoying that can be improved
There are ways to deal with inequalities in datetime arrays. If you want to compare only the days (not considering the times), ...

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I can't understand what my mistakes are
Using parentheses () to index into a table indexes the table itself rather than the elements of the table. To index the element...

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Finding out the missing dates and times from the time series data
I am not certain what result you want. One option is to read it in as (or convert it to) a timetable and then use the retime ...

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How change design of my graph to this shape by data analysis?
I am not certain what you are asking. Choosing a matching colormap is straightforward, and turbo seems to be close to that in...

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Insufficient number of outputs from right hand side of equal sign to satisfy assignment. Error in extraction (line 32) [f0,idx] = pitch(x,fs,Method="SRH",WindowLength=win
The Audio Toolbox pitch function (that matches the syntax you quote) produces two outputs, and (other than a missing right paren...

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Why the filter has no output?
You are designing a continuous filter. All the relevant functions (specifically the filter functions) in the Signal Processing ...

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Using Matlab online, how do I set up a path to my computer (e.g. d:\)
I’m not certain what you’re asking. One possibiilitiy is: How can I upload files from computer to Matlab Online? .

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What is the mathlab code for this figure?
It would help to have the function for . Lacking it, this still requires annotation objects, and that is not always straightf...

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Get difference equation from continuous transfer function
One approach — 0.002174 s + 0.0001581 ---------------------------------------------------------- 6.2...

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changing values in matrix from static output to dynamic output
I don’t know if this does what you want, however it has the virtue of not throwing the size mismatch error — cap=15; crit=3; ...

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