How do i transform this equation system in to three dimensions?
Since this looks like the equations of motion for a solid body falling in a constant gravitational field with some velocity-depe...

2 months ago | 0

Change the markers color in the figure after plotting
You should be able to change the color of the points by using the hp output: set(hp(1),'color',[0.95,.3,0.1]) set(hp(2),'color...

2 months ago | 1

learning to create functions in matlab(R2019a) but every time i try to do so , The value assigned might be un used (used a)create the file in code file, Am a beginner
Ok, here's what you're missing in this example: function a = myRand a=1+rand(3,4)*9; end Now your function has an output-va...

2 months ago | 0

Convex Hull without the in-built function.
Take it step by step. 1, put points on paper. 2, work out how to step from the point with the smallest y-value to the next poi...

2 months ago | 1

Newton Iteration using symbolic function
Since you use symbolic variables and do the calculations symbolically you will get a symbolic answer. Here you should convert y...

2 months ago | 0

If I want to plot arrow in patch, what codes do I have to use? And is there any method by using quiver and patch together?
Can't you simply use either of these two file exchange contributions: arrow, arrow3. These are typically the functions I use whe...

2 months ago | 0

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Find Centroid of area with 4 pouints
You could make good use of this little piece of information: Centroid of a finite set of points HTH

2 months ago | 0

Problem taking curl of a vector field.
If your sampling-points fall on a nice plaid regular grid then just use reshape to convert X, Y, U and V into 2-D matrices and e...

2 months ago | 0

Using symbolic math to retain accuracy. Arrays
Factor out the average of each row of C. That should give you one term of the row-averages of C and then the sum of the logs of ...

2 months ago | 0

How to find index in multi-dimension matrix
You can do this in 2 simple steps: [xMax,idx1D] = max(X(:)); [i1,i2,i3,i4] = ind2sub(size(X),idx1D); HTH

2 months ago | 0

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Make an double integral function
By putting the product inside the first pair of square brackets you've made the formula look a little bit confusing - since the ...

2 months ago | 0

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adding random noise to an image for N times
The question is a bit too vague to be precisely answered. Image noise typically have some specific probability-distribution, pos...

2 months ago | 0

Picking data from graph?
If you have the signal S, the corresponding sample-times t and the start and stop-times t1 and t2 you can select the signal in t...

2 months ago | 0

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find onest and end of wave ?
You cannot in a strict sense. You will have to settle for the first and last wave-crest, or set some arbitrary threshold for the...

2 months ago | 0

How to segment image without losing information at the edges for finding centroid?
The only way I can imagine the meaning of centroid in a grayscale image like the one above is with the same definition as "centr...

2 months ago | 2

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How can I know more details about the function spap2?
Why don't you just try: edit spap2 From there you should be able to read for yourself. As far as I can see most functions are ...

2 months ago | 0

how to solve ODE that contains integration over time?
For this type of integro-differential equations the standard "first-stab" trick is to differentiate it one step, which should gi...

2 months ago | 0

Matlab mathematival modeling problem chemical eng
You have at least a couple of syntax errors in your code, namely the lines: 4*((dacetdt)^2)+10*dacetdt = racet; 4*((dAceticdt)...

2 months ago | 0

why there are two different comands for calculating convolution of two vectors?
The answer to: why returned: "To please all." That might be more of a matlab in-joke, but a true answer can only (possibly) b...

2 months ago | 0

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How to save/store/recuparate data from inside a nested loop.
This should be simple enough if you do something like this: Y_best = zeros(n_something,N_aoa); % Not clear to me what your Y co...

3 months ago | 0

Adding a legend to a Graph in Matlab
Would something like: legend([h(idx1(1)),h(idx1(2)),h(idx3(1))],... 'label1','label2','label3') work for this case. Here ...

3 months ago | 0

Does detrend function remove the mean of the signal?
If you read the help of detrend you will find: DETREND Remove a linear trend from a vector, usually for FFT processing. [...

3 months ago | 0

How to correct resonance phase plot
You could quick-fix this by plotting the phase-angle phi like: plot(unwrap(2*phi)/2) But you might have to check that you calc...

3 months ago | 0

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Tri-diagonal Matrix with varying diagonals
You have to set the elements of z to the values you want. In your version you set z to a new scalar (first time around the loop ...

3 months ago | 0

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Colormap on values related to bins
Perhaps you could use scatter to plot this. According to your description itseems as if you have a 2-D histogram type of data, b...

3 months ago | 0

How to include variable offsets in polynomial equations
Have a look at the help and documentation of taylor. That should help you a good part of the way - especially if you use the 'ex...

3 months ago | 0

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3 loops using sprintf to change directories doesn't quite work
Have a good look at the help and documentation of fullfile. That function is made to help you generate full filenames with absol...

3 months ago | 0

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I am not able to solve value of 3 constants with three equations
For given values of b, d, and L you have a standard system of linear equation. An obvious solution to these equations are all ci...

3 months ago | 0