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Get datetime from variable name
When I look at the .png files, all the values appear to be the same among all the other variables. I am not certain what you wa...

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How to create a FRF graph of the real and imaginary parts of a signal
It appears that is its default behaviour if you request outputs — load modaldata figure subplot(2,1,1) plot(thammer,Xhamm...

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How to label names in bar graph?
One approach (using xticklabels introduced in R2016b, as was string) — Data = rand(8,3); xlables = ["THD" 3 5 7 9 11 13 15]; ...

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I loaded a data file, but why is matlab not able to name the different columns of data within the txt file?
It would be best not to convert the .csv file to a text file (or to anything else) initially. Instead, use readtable to read ...

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Error "First input argument must be a function handle." function used fzero Please help to resolve the issue. Thanks
The assignment statements are out-of-order (so ‘n’ and ‘hf_0’ do not yet exist when they are assigned in ‘LHS’) and two functon...

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how to code equation
Using the Symbolic MAth Toolbox — syms xi lambda psi Eqn = psi - log(psi) == -3 * -4 * log(lambda/2) + 4 * log(xi) + 2 * la...

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Error when using interpolation method
The serial numbers change position because timetable arrays require that the time vector be the first column, regardless of how ...

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want to calculate std_value and mean_value
There are 395449 ‘Inf’ values in ‘img’ (probably the result of the subtraction in the denominator of the transformation) so thos...

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Finding y-intercept for loop
I made some minor changes to your code, and added a loop to return reasonably precise values of ‘y’ for each intersection. Your...

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Removing the noise/filter
The signal has broadband noise, so ffrequency-selective filters will not work well to limit that noise. The best approach fro b...

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i have to read an exel file which has iterations and cl/cd/cm and make a loop for plotting subplots for cl/cd/cm vs iteration which has different angle of attacks.
If you need to do those plots in a loop, and assuming that the table variable names are (in order): iteration1, cl, iteration2, ...

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Help in integration in MATLAB?
If you want a numeric result, use the vpaintegral function — syms w L = (5.*(i.*w).^5 - 170.*(i.*w).^3 + 1125.*(i.*w))./(5.*(...

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How can I find the peak location from the FFT output?
Missing data file. However this is straightforwazrd — Fs = 1000; L = 10; t = linspace(0, L*Fs, L*Fs+1)/Fs; % [1 2 3]'...

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ODE Solver Running Very "Slowly"
Your system is ‘stiff’ because the parameters span several orders-of-magnitude. Use a ‘stiff’ solver such as ode15s instead — ...

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Unable to read datetime with format "0600 UTC OCT 25"
That is almost correct. Use 'MMM' for months in that format, and 'HH for hours. Try this — Name = ["1200 UTC OCT 10" ...

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For Loop for Symbolic
I am not exactly certain what the problem is, however creating as a sym matrix and re-defining the loop indices so that they ar...

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how do i plot a graph after a for loop
Subscript the variables-of-interest in the loop according to the loop index counter values, and then plot those variables after ...

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How can I get MATLAB to preserve column names as variables when importing a csv file to timetable?
I am not certain that 'VariableNamingRule' works as part of the options structure. Try this instead: test= readtimetable('...

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error Conversion to double from function_handle is not possible.
The ‘p’ function was incorrect, and the ‘h’ funciton is completely missing (so I created it). Try this (with the correct ‘h...

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Effect of Humidity on Electrochemical Sensor Signal and Seeking Correction Approaches
Relative humidity will of course be affected by temperature, inbcreases as the temperature decreases, and it can never exceed 10...

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How to find the sampling frequency?
The sampling frequency is the inverse of the sampling interval. The sampling frequency appears to be ‘ts’ . These correspon...

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How to have same heading for different columns in the table?
I would just name the ‘Time’ variables as ‘Time1’, ‘Time2’ and ‘Time3’ to match the ‘v’ columns. The NaN columns are likely not...

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Error using scatteredInterpolant The input points must be specified in column-vector format.
I do not have your data so I am not certain exactly what the problem is. A relatively easy way to create column vectors is: ...

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Why did the signal get delayed?
I am not certain what you intend by ‘delayed’. You are plotting a cosine curve, and the ‘ii1’ value is defined as being true wh...

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Count values in the given array
Try this — LD = load('matlab.mat'); AA4 = LD.AA4 [UAA4,ix1,ix2] = unique(AA4(:,1)); Zeros = accumarray(ix2, (1:numel(ix2))'...

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How to change data stacking order for a single series in bubble charts?
MATLAB plotting functions generally plot in the order specified in the pllotting command, and later objects are plotted ‘on top ...

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extracting rows of data
Try this — T1 = readtable('07010000002.txt'); T1.Properties.VariableNames = {'V','I'} minI = min(T1.I)*0.99; maxI = max(T...

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fprintf formatting problem with cell and array matrix
Eliminiating the newline character from the ‘Mix ratio’ fprintf statement: fprintf(fileID,' Mix ratio'); produces: ...

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MATLAB Tools to Evaluate and Mitigate Sensor Noise
I am not certain that I understand the sort of processing you are doing. Some of the signal noise is broadband, however much o...

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Matlab: colorbar of contourplot only for specified contour levels
I cannot get the ticks exactly where I would like them, even doing my best to interpolate them. Perhaps this — [X,Y,Z] = pe...

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