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**Content Feed**

logical operation on a varable x

Is this what you are looking for? for j = 1:20 if j==1 || j==20, continue; end your_code_goes_here end This...

meer dan 8 jaar ago | 0

How to plot 4D graph ?

You can use scatter3. To that end, you can create a matrix containing in each row the coordinates of each point and the value of...

meer dan 8 jaar ago | 0

Plotting 4D with 3 vectors and 1 matrix

You could use "patch" since the surface will hide the interior points. You can create a matrix containing the coordinates of eac...

meer dan 8 jaar ago | 0

Simultaneously inverting many matrices

In my experience, using cells is rather slow. Since your matrices are 2x2, then you could simple arrange them in a 3D array, wit...

meer dan 8 jaar ago | 1

How to solve system of nonlinear equations (A-x1)*x2=B?

Notice that (A-x)*y=B (I changed the names of the variables for simplicity) can be written component-wise as (Ai-xi)*yj = Bij, w...

meer dan 8 jaar ago | 0

How can I calculate very large matrix and store the values?

I guess one option would be to reduce the size of your data using clustering such as K-means or Gaussian mixtures, and replace a...

meer dan 8 jaar ago | 0

int8(3) vs int(3)

At least in Matlab 2015, the function "int" is related to filters (in the filtstates package) or integration (in the symbolic pa...

meer dan 8 jaar ago | 2

| accepted

Unexpected phase displacement in FFT of a pure sinewave.

Hi Alberto, I think your problem is due to your choice of t. Suppose that your frequency is 50Hz. If you choose t=0:.00...

meer dan 8 jaar ago | 0

| accepted

Submitted

zoom_wheel(hfig,options)

Zoom in and out using the wheel in a rather practical manner

meer dan 8 jaar ago | 1 download |

how can I draw a line knowing just the midpoint and the angle?

You can do this midpoint=[a,b]; % This defines the midpoint. You should give a and b some value. lineangle=c; % This defines...

meer dan 8 jaar ago | 0

| accepted

Solving an Equation using Newton-Raphson Method

Are the functions polynomials as the example you mentioned? If they are, assume that the order of the polynomial is N (in you...

meer dan 8 jaar ago | 0

How to impove the performence of this code?

As far as I can see, there is a problem in the code. Wheneven the condition strcmp(alldata(i,1),alldatafel(j,1)) && strcmp(...

ongeveer 9 jaar ago | 1

plot two figures with same colorscale

If I understood correctly, you want the colour to vary according to the value of "z". But the problem is that plot3 takes only o...

ongeveer 9 jaar ago | 0

How do I write a function with multiple out puts and inputs with varying times?

The problem is in the equation. The constant for the charge of the capacitor is R*C. Therefore, instead of writing Vc = V*(1-...

ongeveer 9 jaar ago | 0

| accepted

How to change the color of a specific sub-bar in a 2-D bar graph

You can do that by plotting each bar separately. For example, suppose that data is a matrix of 31 x 3 and that the colors for th...

meer dan 9 jaar ago | 1

| accepted

Taking the mean of rows in a structure array

You can do the following: nmfinal=mean(cell2mat(squeeze(struct2cell(nm.data))'))'; You might need to take some precautio...

meer dan 9 jaar ago | 0

How to check if a 3d matrix has any 2D submatrix with non zero elements?

You can just do [any(any(a(:,:,1)>0)),any(any(a(:,:,2)>0))] or just shorter nonzero2D=@(a,k)any(any(a(:,:,k)>0)) ...

meer dan 9 jaar ago | 0

Extracting data from lines in a plot

Just in case, you could also provide a contextual menu by doing the following hmenu=uicontextmenu; uimenu(hmenu,'Label','M...

meer dan 9 jaar ago | 0

Extracting data from lines in a plot

Have you tried using the command text()? Suppose that the tip of one of the lines is in (a,b). Then you can just do text(a,b...

meer dan 9 jaar ago | 0

How to compare two signal

The comparison can be done in several different ways. Suppose that X is the original signal and that XR is its reconstruction. Y...

meer dan 9 jaar ago | 1

| accepted

Plot a 3d-plane in MATLAB??

This solution is based on patch y=-2:.01:2; z=4-y.^2; numy=length(y); % Constructing the vertices V=zeros(numy,3)...

meer dan 9 jaar ago | 0

| accepted

Making a Square Wave Gradually

Each section is being played for one second because you are setting that in the line y(1 + timeDomain + (((k+1)/2)-1)*fs) = ...

meer dan 9 jaar ago | 0

| accepted

multi-variable looping problem

for a=1000:100:20000 ia=floor(a/100)-9; for b=100:10:200 ib=floor(b/10)-9; for c=.2:.01:.3 ic...

meer dan 9 jaar ago | 0

| accepted

How to find inverse of a self written function?

You can do the following sqrtllrh=fminsearch(@(sqrtllr)(cdf_func(sqrtllr.^)-h)^2,1); llrh=sqrtllrh^2; The explanation...

meer dan 9 jaar ago | 0

Create plot with orthonormal axis

Maybe you can solve this by setting the axes property 'DataAspectRatio' to a specific value. For example: set(gca,'DataAspe...

meer dan 9 jaar ago | 1

| accepted

Submitted

3D Gaussian ellipses constant probability curves

Construct data points of ellipsoids depicting contour curves of 3-dimensional Gaussian distributions

meer dan 9 jaar ago | 1 download |

Submitted

Gaussian ellipses constant probability curves

Construct data points of ellipses representing contour curves of bivariate Gaussian distributions.

meer dan 9 jaar ago | 3 downloads |

Labels on the contour have too many digits

You could use [C,h]=contour(...); texth=clabel(C,h); texth is a vector that contains the handles of all labels. To ge...

meer dan 10 jaar ago | 0

Help needed on plotting!

When you push the GUI pushbutton, you can read the labels of the columns of the data into a cell array and then create the check...

meer dan 10 jaar ago | 0

More sophisticated code than a for loop with i is large

Please notice that in the "scatter matrix" that you showed as an example there are elements that are repeated, and the structure...

meer dan 10 jaar ago | 0