Community Profile

photo

Jon


94 total contributions since 2013

Contact

Jon's Badges

  • Thankful Level 2
  • Knowledgeable Level 3
  • First Answer

View details...

Contributions in
View by

Answered
Using a Subroutine to Create a Plot
I think that what you describe could be implemented with a simple loop. So make a vector of radii that you want to evaluate, set...

3 hours ago | 0

Answered
nonlinear fit of experimental data
In your example you find a fit to a function of one variable, and are somehow looking for a combination of terms to form that on...

4 hours ago | 0

Answered
Using find to check the contents of files within a struct
It looks like your difficulty is coming from the argument that you are providing to the find command. If you look carefully at ...

2 days ago | 0

| accepted

Answered
Taking middle 4 values of n size array
You could use something like, for an array A n = length(A(:)) % : treats as column even if this is actually a multidimensional ...

3 days ago | 0

Answered
Program for Impulsive Difference Equations
One way to approach this is to transform your difference equation in the single variable y to a system of two difference equatio...

3 days ago | 1

| accepted

Answered
How should i go about solving a set of ODEs for a set of data points? I would like to automate it as much as possible.
Please see my earlier comments. From the behavior you describe, it looks like Sol1 and SolRequired are returned empty from wha...

4 days ago | 0

| accepted

Answered
How should i go about solving a set of ODEs for a set of data points? I would like to automate it as much as possible.
I am not clear on the details of your implementation. It would take some time to go through it all line by line. In case it is ...

4 days ago | 1

Answered
How to differentiate elements in a matrix by each other
Say your matrix is called M, you could do something like % find incremental change from one row to the next delta = diff(M); ...

4 days ago | 1

| accepted

Answered
How to organize a table?
You could do this with a simple loop I'll assume your table is called mytable % find maximum possible value for cell type cell...

7 days ago | 0

| accepted

Answered
concatenating and comparing two datsets
Assuming that the 9th column of both data sets is the same, I think you can do this just with an innerjoin tbl1 = readtable('da...

7 days ago | 1

| accepted

Answered
I want to add a line of best fit to my plot using the polyfit function.
You can do something like this p = polyfit(xL(A),anglex,1); anglexFit = polyval(p,xL(A)); plot(xL(A),anglex,'ko',xL(A),anglex...

8 days ago | 0

Answered
open loop response for nonlinear system
Basically you need to define the set of ODE's (ordinary differential equations) that define your system and then solve them. MAT...

9 days ago | 0

| accepted

Answered
How to implement a frequency dependent analysis?
You are quite close with your code. I think you just need to use the semilogx with a few annotations as shown below %Schirmdämp...

9 days ago | 0

| accepted

Answered
How do I plot a 3D mesh from multiple csv files?
The problem apparently is with loading the files, nothing to do with plotting 3d mesh, or at least it didn't get far enough to h...

10 days ago | 0

| accepted

Answered
Insert missing date and corresponding values in a matrix?
I'm not completely clear on what it is you are trying to do, but I think you want to plot the values in the third column against...

11 days ago | 0

Answered
how to call nested structure and cell array?
I'm not sure exactly what you mean by "call the first column of the data.timepoints" If you wanted to assign some other variabl...

14 days ago | 0

| accepted

Answered
How can I graph arrays with negative exponentials? It keeps saying that there is an error but I can not figure out what is wrong
You need to put a multiplication operator between the constants and the exponents f(x)=[6.02105*exp(-6,) 1.514423*exp(-3), 6.64...

14 days ago | 0

Answered
Extrapolation of data points
You could first find the equation of a straight line that goes through the last n points of one curve, and then similarly find a...

14 days ago | 0

Answered
Creating a Matrix from Distances between Vectors
So from your description you actually want to find and store the vectors that go from each point in the first matix to each poin...

15 days ago | 0

Answered
Rotation of curve question
I think you also have a sign error in your formula. Xr = (x-XXc)*cos(delta) + (yp-YYc)*sin(delta) + XXc; % should be Xr = (...

15 days ago | 0

Question


How to vectorize assignment from array of structures to cell array
I am looking for a way to make an assignment from an array of structures to a cell array without using a loop. Here is an examp...

17 days ago | 1 answer | 0

1

answer

Answered
Help with discrete convolution
This is a good reference that explains discrete convolution specifically using MATLABhttps://www.ling.upenn.edu/courses/cogs501/...

17 days ago | 0

| accepted

Answered
could anyone help me to solve the issue
If I am understanding your problem correctly you could do something like this: % define matrix of value A=[0.0037 0.0036 ...

18 days ago | 0

| accepted

Answered
Issue with array2timetable = Row times must be datetime or duration vector with one time for each row in input timetable.
It looks like you may have the arguments reversed. The first argument should be the data (doubles) the last argument should be t...

18 days ago | 0

Answered
Help with discrete convolution
You need to first form two vectors, z1 and z2 where z1 hold the values of your first series, and z2 holds the values of your sec...

18 days ago | 0

Answered
how to use logic array
It isn't quite clear the specifics of what you want to retrieve but for example if you wanted to get the row in frame 1 that mat...

22 days ago | 1

| accepted

Answered
How to do Downward peak detection?
You can use the MATLAB function islocalmin for example idx = 1:length(A) isMin = islocalmin(A); plot(idx,A,idx(isMin),A(isMin...

23 days ago | 0

Answered
Problem of Nonlinear Regression
If you have the Statistics and Machine learning toolbox you can use fitnlm or nlinfit see documentation https://www.mathworks.co...

23 days ago | 0

Answered
How to compare array's values with each other?
Staying close to what you have started here, you could put your code into a double loop, for example % assign threshold z = 10...

23 days ago | 1

Answered
Help deal with the loop
You do not need a loop to evaluate this type of expression in MATLAB. The beauty of MATLAB is it lets you do math directly with ...

24 days ago | 0

Load more