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how could i plot x^2+(y-x^3/2)^2=1 ?
Perhaps this — syms x y m(x,y) = (x^2+(y-x^3/2)^2-1); figure fimplicit(m, [-1 1 -1 1]*1.5) grid axis('equal') xlabel...

3 years ago | 0

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What is the rating of the Parks-McClellan FIR degree?
According to the documentation, the order of the filter is ‘n’ (the first output).

3 years ago | 0

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I want to save [pks,locs] data for every iteration
Since the ‘[pks,locs]’ data may not be the same in every iteration, save them to cell arrays — [pks,locs] = findpeaks(sgf,'min...

3 years ago | 0

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Find closest value for each row in timetable
I am defining ‘closest’ as the minimum absolute difference between ‘Var1’ and the last two variables. (My attempt at a more d...

3 years ago | 0

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Group data based on direct
One way to do this would be to use the histcounts function and get the first three outputs — WindDir = rand(100,1)*360; edgev...

3 years ago | 0

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cannot find existing number
See the documentation section on Floating-Point Numbers for a full explanation. Actually, I can’t reproduce that exact proble...

3 years ago | 0

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Plotting amplitude spectrum of a signal
Try something like this — tmax=0.5; t=0:0.001:tmax; fs=1000; tsamp=0:1/fs:tmax; f1 = 18; f2 = 321....

3 years ago | 1

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Sort a bank of ECG samples to 2 groups
This is the best I can do for these. They required a significant amount of processing to remove the baseline variation and hi...

3 years ago | 0

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How to find THD?
If you’re referring to total harmonic distortion, see the Simscape Electical function ee_calculateThdPercent.

3 years ago | 0

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How do I get rid of the horizontal line on the y-axis in a line plot? Please see attached image below as an example. I want the horizontal line hidden.
Since: [x1,fs1]=audioread('Aniruddha heart beat.wav'); and x1 = 962560*2 the red line is likely the second channel in ‘x1’ ...

3 years ago | 0

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Calculate the maximum and minimum values
I thought we covered a version of that in my Comment to your other thread. That dealt with the hour that the daily maximum oc...

3 years ago | 0

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Saving data from a for loop (new-ish to MATLAB!)
Save the ‘datatable’ output to a cell array — mn_start=9; %month to start dd_start=11; %day to start date...

3 years ago | 0

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error "Invalid parameter name: CriticalValueType." in example code.
If I understand correctly what you’re doing, that version of the multcompare function was introduced in R2022b, according to the...

3 years ago | 0

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How to find number of counts for atoms (each minor grid) within XY grid?
I am not certain what you want. The histogram2 function is one option — T1 = readtable('https://www.mathworks.com/matlabcen...

3 years ago | 1

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I am trying to plot acceleration-time graph by using a txt file but I got error.
The columns are reversed from your assignments. The first column is the signal, and the second column is the time vector. Tr...

3 years ago | 1

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String date and time identification
If they all have the same format — date= '2021-07-011407404.5' DT = datetime(date(1:16), 'InputFormat','yyyy-MM-ddHHmmss', 'F...

3 years ago | 0

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how to convert a Laplace transform into a transfer function value
The ‘d’ expression currently exists as a symbolic object. It needs to be transformed into a double value and then to a system o...

3 years ago | 0

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Error using Dsolve: "Invalid indexing or function definition. Indexing must follow MATLAB indexing. Function arguments must be symbolic variables, and..."
The differential equations are nonlinear, so it is highly unlikely that there is an analytic solution for them. Integrate the...

3 years ago | 0

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convert a string into a date and time format
Try something like this — m ='October17,196616:41:00'; DT = datetime(m, 'InputFormat','MMMMdd,yyyyHH:mm:ss', 'Format','yyyy/M...

3 years ago | 0

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I want automatic tuning of RF filter screws
I do not have the RF Toolbox, however creating a filter as an anonymous function with appropriate arguments (I just use the pass...

3 years ago | 1

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Different tick values on same axis
See if the xticks call in: xticks([a+g:dxf:b-g (b-g+dxs):dxs:b]) does what you want — a=0; b=4; c=0; d=6; g=1; dxs=0.2...

3 years ago | 1

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Vertical line in plots
The xline function will plot a vertical line between the limits of the y-axis at the chosen x-value. To plot a vertical line onl...

3 years ago | 0

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Detecting start and end of signal
Try something like this — M1 = readmatrix('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1251052/P05%20Trial%...

3 years ago | 0

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Uploading my code, with DataSet on this forum
The ‘Help’ section (click on the ‘More’ just to the right of ‘Browse’ above the title in this page and select the last item in t...

3 years ago | 0

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How can i solve the Too many output arguments error problem ?
You are overshadowing the error function (although there are also two other error functions in the Statistics and Machine Learni...

3 years ago | 0

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How order a dataset
One approach is to usee the sortrows function — Data = table(randi(1E4,6,1),['M';'B';'M';'M';'B';'B'], rand(6,1), randn(6,1), ...

3 years ago | 1

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Plot smoothing line without points
I am not certain what you wnat to do. Taking a guess — N = 20; x = sort(randn(1,N)); y = randn(1,N); xs = linspace(min...

3 years ago | 1

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Answered
Converting cell in double
Try something like this — LD = load(websave('ids','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1249257/ids....

3 years ago | 0

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Answered
binary vector that consists of a zero for normal years and a 1 for a leap year
Use the eomday function — YearVct = 1950:2050; Lv = eomday(YearVct,2) == 29 % Create Logic...

3 years ago | 0

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Answered
hello. i have a txt file which i want to import and plot. how can i do it?
One approach — T1 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1248562/packerchannel.txt','Vari...

3 years ago | 0