# Jeffrey Clark

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**Content Feed**

constantGammaClutter doesn't take account of Doppler shift of the frequency due to radar motion

@Andrey Senkov, this bullet below from the description of Simulate constant gamma clutter - MATLAB (mathworks.com) indicates it ...

ein Tag ago | 1

I'm getting an error (Index in position 1 exceeds array bounds)

@Majd AG, find is going to look at the entire signal as if you had written signal(:) > max_thresh; find will return values beyon...

2 Tage ago | 0

Optimisation of a 3 vector velocity

@Olivia Davison, perhaps you are saying x, psi, gamma and velWind are related, one for each object: x(N,3), phi(N,1), gamma(N,1)...

3 Tage ago | 0

How to plot a second coordinate frame using plot3?

@Jimmy Neutron, your Z rotation matrix doesn't agree with your Z rotation formula. Either could be correct depending if you want...

5 Tage ago | 0

How to solve this issue?

@Nisar Ahmed, I think what you want to do to have Simulink outputs grouped across multiple runs is something like the example in...

5 Tage ago | 0

Error in finding phase noise of an electrical oscillator...

@khan, my guess is that your data frequency is not compatible with the other parameters; the example looks at a signal of 2.7G a...

11 Tage ago | 0

| accepted

Submitted

Utility package with NoGrow class and realDeal function

Utilities I find useful: NoGrow superclass to detect and/or prevent growth of arrays; and realDeal to augment MATLAB deal functi...

14 Tage ago | 1 download |

Looping if between 2 numbers

@jason, the and operator (&) produces a logical (true/false 1/0) result - not a range of values. Please look at MATLAB documenta...

16 Tage ago | 0

How to assign to a collection of object properties stored in an object array, using a numerical array of compatible type and size (one statement, without for-loop!)?

@Peter, without getting into your specific code I suspect that [obj.objArray(IndexSet).tstmp] = T(1:nI) is incorrect in that the...

16 Tage ago | 0

| accepted

How to shade the same area in each subplot in a 5x1 Figure?

@S_G, if you use debug to step thru the code you will see that the 2nd subplot initially gets the shading, but then line plotted...

19 Tage ago | 0

How to solve 'Error using image Complex values are not supported. Specify the color data as numeric or logical values.'

@Nisar Ahmed, I don't have the toolbox for ksdensity but the imaginary parts of SW_OPT are insignificant relative to their real ...

22 Tage ago | 0

| accepted

How can I evaluate an Simulink.data.Expression in a MATLAB script

@Karsten Gordon, Evaluate MATLAB expression in data dictionary section - MATLAB evalin (mathworks.com) or Evaluate MATLAB expres...

22 Tage ago | 0

How can I read data in backgorung from my NI hardware?

@Jan Tomaszewski, try moving the device setup into your main program and pass that dq (and maybe ch3) as a parameters to the wor...

22 Tage ago | 0

My snipet code have 3 harmonics, second's amplitude is maximum, but abs(fft(X)) returns first as maximum. I use MATLAB R2022a.

@Georges Theodosiou, you don't have enough samples to easily interpret the abs(fft), if you change Segm = 1:2048 to use 16384 yo...

23 Tage ago | 0

| accepted

fill value that has different size of array

@상훈 송, trying to save results directly into part of an array will not work unless you know exactly what the size of the return w...

24 Tage ago | 0

| accepted

Converting a list of binary numbers to a decimal numbers

@Martin Mittrenga, read up on num2str and strsplit which don't really support vectors of things. One way to do this without loop...

etwa 2 Monate ago | 0

Fast fourier tranformer for Time series data

@Mohammed Lamine Mekhalfia, I think the answer provided by @dpb is valid although @Bjorn Gustavsson has valid points as well. By...

etwa 2 Monate ago | 0

is this expression right in MATLAB?

@Aisha Mohamed, what you are looking for is known as a Laurent polynomial - Wikipedia. The MATLAB Wavelet Toolbox has functions ...

2 Monate ago | 0

How to evaluate the computation time of some codes in parallel properly?

@Slivery, when using the cputime difference method don't forget to divide by 21 (the number of executions being averaged). Depen...

2 Monate ago | 0

| accepted

I want to find unique value(s) based on a given conditions

@Tulkkas, this should do it (I added a randomize of your sorted data since first, if it would always be sorted skip as indicated...

2 Monate ago | 0

| accepted

Need help understanding rescale()

@Adrian Velasquez, according to rescale documentation each element should be rescaled to [0..1] using this method: l + [(A-...

2 Monate ago | 0

| accepted

spline for corner object

@Mehri Mehrnia, use Transform Cartesian coordinates to polar or cylindrical - MATLAB cart2pol (mathworks.com) and sort by theta ...

2 Monate ago | 0

| accepted

Why am I not getting desired values using loop?

lbr = length(br_peaks); points = nan(lbr,7); % each row is 1->lbr; cols for a row are nan filled % could ...

3 Monate ago | 0

| accepted

Why am I getting this error when trying to logically compare 2 arrays inside of a struct of the same length

@Bolaji, I believe that with each of the statements data(MainRawFilt).(dataNames{k}) = [] you are reducing the size of data.(dat...

3 Monate ago | 0

preallocating memory without storing numbers

@Philine Baumert, given that your issue is with code using the end index into arrays which by default won't work correctly with ...

3 Monate ago | 0

| accepted

When subclassing "double" with new properties, is there an easy way to access the data value?

@Robbie, see Subclasses of Built-In Types with Properties - MATLAB & Simulink (mathworks.com) Sorry but the subsasgn and subsre...

3 Monate ago | 0

| accepted

I am trying to solve for OS here, but keeping getting pi/2 even when I change L

@adam puchalski, you need to limit fsolve such that it doesn't attempt values that cause sqrt(cos(initial)-cos(theta)) to return...

3 Monate ago | 0

Using "for" loop for summation of matrix product

@Nir Vaishnav, you don't say what any of the iputs are, but since kron will produce a matrix (unless both inputs I and bk are ei...

3 Monate ago | 1

| accepted

preallocating memory without storing numbers

@Philine Baumert, keeping others in the dark doesn't shed any more light on finding what's hidden. So an answer doesn't seem pos...

3 Monate ago | 0

How to separate waves from a signal

@Abdelhakim Souidi , I couldn't determine if you had the data or just an image to work with. If you are working with just an im...

3 Monate ago | 0