Beantwortet
Accessing data from a file and putting it into a matrix in Matlab, plus headers.
Is this correct? Basically, yes. When you call the function, |header| should be a cell array of strings, so writeWithHead...

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
saving values without index
Why do you not want to use an index? It is less efficient to just append values to an existing array, but you can: x = [];...

etwa 14 Jahre vor | 0

Beantwortet
create random data
One of the benefits of using MATLAB is that you can use it interactively to try these things out and see if they do what you wan...

etwa 14 Jahre vor | 0

Gelöst

Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

etwa 14 Jahre vor

Beantwortet
Problem with ODE solver
Your equation is defining dy/dx = ay, not dy/dx = ax. Big difference! The solution to the former is y(x) = C*exp(ax); the solu...

etwa 14 Jahre vor | 0

Beantwortet
What do you think of Cody, new service for MATLAB Central
OK, so you know that I'm biased, but let me be clear that I'm stating my personal opinion here, not that of my corporate overlor...

etwa 14 Jahre vor | 2

Beantwortet
Plotting problem
You *are* plotting only the real parts. I think the problem is coming with how you're calculating these functions. You have |b...

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
Could someone please explain...
|r_dat| is a function with no input arguments: function F = r_dat but you're calling it with an input F = r_dat(dat...

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
why can I not create 3 subplots?
|subplot| deletes any axes that are already where you're trying to put the new one. If you're going to set the |position| prope...

etwa 14 Jahre vor | 3

| akzeptiert

Beantwortet
Need some clarification
Just from looking at the code, it looks as though you're dividing a scalar by a column vector: y = data(:,1); ... ......

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
Please help me convert equation to matlab code.
Assuming that |x| is a column vector N = length(x); k = 0:(N-1); DCTbasis = cos(k'*(2*k+1)*pi/(2*N)); w = sqrt(2/N)*DCTb...

etwa 14 Jahre vor | 0

Beantwortet
varargin
It is used for situations where you want to allow any number of input arguments (so you can't list them). A common reason for t...

etwa 14 Jahre vor | 13

Beantwortet
How do you label the rows and columns of an array?
MATLAB doesn't have a way to tag meta data onto an array. There are, however, several ways to do something like you've asked, b...

etwa 14 Jahre vor | 0

Beantwortet
Interpolate to find values at particular points from a 45x28 matrix
Sounds like a job for |TriScatteredInterp|! F = TriScatteredInterp(X,Y,P); p = F(x,y); Are |X| and |Y| matrices (same...

etwa 14 Jahre vor | 0

Beantwortet
Possible to create a function where the input is changed?
I am not doing this... classdef passbyref < handle properties value end met...

etwa 14 Jahre vor | 1

Beantwortet
Why are the BLAS functions in R2011b much faster than R2008a?
The developers continually work on squeezing a bit more efficiency out of the core math operations, so I'd expect to see an impr...

etwa 14 Jahre vor | 3

Beantwortet
finding roots of the equation
You may want to check your function, because it doesn't seem to have any (real) zeros: f = @(n,I) n*210+(I.^2/n).*((((200-3...

etwa 14 Jahre vor | 1

| akzeptiert

Beantwortet
How does the MATLAB calculate the arctan?
All inverse trigonometry functions return to a specific limited range, because trig functions are periodic. Hence, if |x = 9*pi...

etwa 14 Jahre vor | 2

| akzeptiert

Beantwortet
suppressing the display of ans
What Wayne said. But to dig a bit deeper: given that you specifically said "function", I'm guessing you might be confused by th...

etwa 14 Jahre vor | 2

Beantwortet
Difference between Array,Cell array and Subscripted elements of an array..??
Array = a single variable (of any data type) that contains multiple content elements. Cell array = a specific type of array i...

etwa 14 Jahre vor | 12

| akzeptiert

Beantwortet
Shaded areas in scatter figure
Something like this? patch([-0.25,0,0,-0.25],[1 1 3 3],[0.5 0 0.8],'FaceAlpha',0.4,'EdgeColor','none') patch([0,0.25,0.2...

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
For loop calcs
This is truly weird, and the short answer is that I don't know why it's doing that. The values to loop over should be evaluated...

etwa 14 Jahre vor | 0

Gelöst

Is my wife right?
Regardless of input, output the string 'yes'.

etwa 14 Jahre vor

Gelöst

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

mehr als 14 Jahre vor

Gelöst

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

mehr als 14 Jahre vor

Gelöst

Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

mehr als 14 Jahre vor

Gelöst

Add two numbers
Given a and b, return the sum a+b in c.

mehr als 14 Jahre vor

Gelöst

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

mehr als 14 Jahre vor

Gelöst

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

mehr als 14 Jahre vor

Gelöst

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

mehr als 14 Jahre vor