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**Feeds**

How to plot a 3D cube or a horizontal slice from the following 3D data?

Alright let's write an actual answer with isocaps and patch then, the suggestion to use scatter3 in the comment above is valid b...

3 månader ago | 0

| accepted

Indexing array by 2 variables in a for loop

You need to select each participant for each period, then doing a ttest on only those 51(*2 data matrices possibly) datapoints, ...

4 månader ago | 0

Find the eigenvalue of the matrix R and store it to the variable E

R=[1 2 1; 2 3 4; 4 3 2]; R1 =[8;20;16]; r = rank(R) X = linsolve(R,R1) E = eig(R)

4 månader ago | 0

| accepted

Band-Pass Filter butter problem

Something something Nyquist frequency.... If you provide the missing data to your example you could get a better answer f_st...

5 månader ago | 0

| accepted

How do i find x from given y that is closest to my peak or at x=0?

I'm assuming you just have the data points of the line and not the function otherwise the question would be answered with the mo...

7 månader ago | 0

rotate/translate/zoom the two simultaneously generated figures within subplot

You mean with the figure utilities after plotting beetween subplots? You can use linkaxes (or linkprop for a specific property) ...

8 månader ago | 2

Issue with plotting two figures using for-loop method

Do you just mean that the second figure is half as high because you did subplot(2, 4,...) in the second part instead of subplot(...

8 månader ago | 1

Clearing the last plotted image in a for loop.

The function provided does not work out of the box (and you haven't boxed it in code format anyway) so you have more than the is...

8 månader ago | 0

| accepted

extract all rows of a matrix except 'r' (vector) rows

mat = magic(8) r_not = [1 3:5 8]; mat(r_not,:) = [] %use mat_o = mat; to keep the original mat; There are some issues with ...

9 månader ago | 1

Matrix to Scalar Problem

Use a dot "." before an element-wise operation, that is also to multiply, divide, raise etc a scalar value to each of the elemen...

9 månader ago | 0

I run this but its given me issues. Can someone assist

I assume that the copy and paste of your code did not go well... but then you should've fixed it before posting. Even after fix...

9 månader ago | 1

| accepted

There is anyway that I can plot a graph like this in MatLab with standard deviation ?

n = 15; x = randn(n,1); y = randn(n,1); sx = std(x); sy = std(y); %maybe non-randn data will have smaller std lregsrts = regst...

9 månader ago | 0

I have a MATLab invalid expression when calling variables.

What would be the error? I can already see some errors in the OPF (I'm guessing the mistake would be using semicolons ";" inst...

9 månader ago | 0

Matlab outer file function

Invalid use of operator "." You can't tell a function to make an output a struct (since that might break things, you can only a...

9 månader ago | 1

| accepted

Correlation and regression between matrixes with NaN values

I see, "array1" has some islands of values in a sea of NaNs. ar1 = load(websave('rd', "https://nl.mathworks.com/matlabcentral/a...

9 månader ago | 2

How can I reduce the number of digits in the colorbar?

You likely need something like this. surf(1+peaks*0.00001) %obvs this is a quick and bad example, it'd have helped to have the ...

9 månader ago | 0

| accepted

What is the difference between the userpath and the startup folder?

They are different. Matlab starts in the startup folder, the initial working folder, it's displayed on the "Current Folder" pane...

10 månader ago | 0

Solved

A Binary Search

One way to locate a target value in a sorted array, is to use a binary search algorithm. Here, you test if the midpoint in the a...

11 månader ago

Solved

Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)

For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

11 månader ago

how can I run function in file exchange

You're right, that sauvola.m that you linked has only 45 lines (but there's no actual end that terminates the function definitio...

11 månader ago | 0

| accepted

How to select, or filter, the external border/boundary in a set of (x,y)-points?

ismember As in borders = load(websave('rd', "https://nl.mathworks.com/matlabcentral/answers/uploaded_files/1430803/borders.ma...

11 månader ago | 1

Plot a mean of ten lines of different resolution

I see, this is overly complicated. Not as in complex or difficult, as in made needlessly overly complicated. Let's just say you...

11 månader ago | 0

FFT from a excel file

Well, make sure that the data contained in channel1Data2 is numeric (double, single, int8, etc..). From the question title it ...

12 månader ago | 0

Solved

Determine point is located in a circle or not

Using input [x] and [y], determine the points (x,y) is located inside of circle (x^2+y^2=1) if point is located in circle, outp...

12 månader ago

Solved

Average speed for the entire trip

The input is two speeds (for the trip and return trip) and output is average speed. Assume units are consistent, say miles per h...

12 månader ago

Solved

Test if a matrix is symmetric

Write a logical function that returns 1 if the input matrix is symmetric and 0 otherwise.

12 månader ago

How to check whether partial correlation is significant or not at 5% significance level?

A partial correlation means you are controlling or "partialing out" some variance that is explained by -usually- another (3rd) v...

ungefär ett år ago | 0

How To multiply this Formula to run this code Please

The fact that there is the need for a loop for these operations, that b is not simply obtained with b=-T.*h, that [ones(1,i-1), ...

ungefär ett år ago | 0

| accepted

How to plot Confusion Matrix with tolerence limit ?

So you just want to translate the pseudo code above into working code and choose how to best plot it. The pseudo code probably d...

ungefär ett år ago | 0

| accepted

I can't run the code I wrote the way I want. Please help me

By "I cannot change the K value at every T value" I imagine you need K to change for every iteration and therefore have sitll 6 ...

ungefär ett år ago | 0