Statistics
All
MATLAB Answers
File Exchange
38 Files
Cody HighlightsRANK
6
of 300,338
REPUTATION
32,006
CONTRIBUTIONS
288 Questions
12,291 Answers
ANSWER ACCEPTANCE
78.47%
VOTES RECEIVED
4,249
RANK
201 of 20,922
REPUTATION
6,718
AVERAGE RATING
4.90
CONTRIBUTIONS
38 Files
DOWNLOADS
139
ALL TIME DOWNLOADS
55390
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
3 Highlights
AVERAGE NO. OF LIKES
2
Feeds
Answered
Create a 2D image based on what a camera would see
You could just do a surface plot of the object, set the camera position parameters of the axes, and then use exportgraphics (whi...
Create a 2D image based on what a camera would see
You could just do a surface plot of the object, set the camera position parameters of the axes, and then use exportgraphics (whi...
9 hours ago | 0
Answered
Assigning different data types to struct arrays using comma separated list assignment. Are there better options?
I like the performance of the code, however, I find it more difficult to read than for-loops Why not just use for-loops then, i...
Assigning different data types to struct arrays using comma separated list assignment. Are there better options?
I like the performance of the code, however, I find it more difficult to read than for-loops Why not just use for-loops then, i...
14 hours ago | 0
Answered
I am getting the following error
There are many ways to generate that error. One of them is that you may be using 'end' as the name of a variable, e.g., end=1
I am getting the following error
There are many ways to generate that error. One of them is that you may be using 'end' as the name of a variable, e.g., end=1
2 days ago | 0
Answered
How to extract a specific frame from a video based on user input?
This example looks applicable to you: Read Video Frames Starting at Specific Time.
How to extract a specific frame from a video based on user input?
This example looks applicable to you: Read Video Frames Starting at Specific Time.
3 days ago | 0
Answered
Why do Nan values greatly increase the cost of sparse multiplication
I think you should report it as a bug. If you need a workaround, though, the following equivalent operation, which avoids implic...
Why do Nan values greatly increase the cost of sparse multiplication
I think you should report it as a bug. If you need a workaround, though, the following equivalent operation, which avoids implic...
4 days ago | 0
| accepted
Answered
How can I execute a function if it exist, otherwise use a custom function?
Have the used append (i.e., not prepend) your knnsearch to the path. If a native knnsearch exists above it in the path, it will ...
How can I execute a function if it exist, otherwise use a custom function?
Have the used append (i.e., not prepend) your knnsearch to the path. If a native knnsearch exists above it in the path, it will ...
7 days ago | 0
| accepted
Answered
how to create a volume from the revolution of a variable area trapezoid
Here's a little bit more of a polished version of my original answer, which also generates a movie of the trapezoidal cross-sect...
how to create a volume from the revolution of a variable area trapezoid
Here's a little bit more of a polished version of my original answer, which also generates a movie of the trapezoidal cross-sect...
8 days ago | 3
Answered
how to create a volume from the revolution of a variable area trapezoid
Along the lines of what @Mathieu NOE commented, I think it does make more sense to start with an elliptic cylinder and clip off ...
how to create a volume from the revolution of a variable area trapezoid
Along the lines of what @Mathieu NOE commented, I think it does make more sense to start with an elliptic cylinder and clip off ...
9 days ago | 3
Answered
Efficiently assign data into a struct?
You can replace all occurences of '1:end' with ':' and condense your indexing operations. This, for example, T1.var4.y = zer...
Efficiently assign data into a struct?
You can replace all occurences of '1:end' with ':' and condense your indexing operations. This, for example, T1.var4.y = zer...
9 days ago | 0
Answered
How to multiply different size arrays and multiply each element by each element?
Download ndgridVecs from the File Exhange, https://www.mathworks.com/matlabcentral/fileexchange/74956-ndgridvecs?s_tid=srchtitl...
How to multiply different size arrays and multiply each element by each element?
Download ndgridVecs from the File Exhange, https://www.mathworks.com/matlabcentral/fileexchange/74956-ndgridvecs?s_tid=srchtitl...
10 days ago | 0
Answered
Error using trainnet (line 46)
It appears that if your XTrain is in cell array form, you need to put your TTrain data in cell form as well: load('attachedData...
Error using trainnet (line 46)
It appears that if your XTrain is in cell array form, you need to put your TTrain data in cell form as well: load('attachedData...
10 days ago | 1
| accepted
Answered
Indexing a 4-D array using a logical matrix
Assuming you are trying to extract the polygon interiors, you could do, [~,~,p,q]=size(map); Map=reshape(map,[],p*q); tes...
Indexing a 4-D array using a logical matrix
Assuming you are trying to extract the polygon interiors, you could do, [~,~,p,q]=size(map); Map=reshape(map,[],p*q); tes...
13 days ago | 0
| accepted
Answered
What is the difference between different ways to do least square
The train_100 system is underdetermined, so of course you aren't going to get a unique solution. For the 5k data, the only rea...
What is the difference between different ways to do least square
The train_100 system is underdetermined, so of course you aren't going to get a unique solution. For the 5k data, the only rea...
13 days ago | 1
| accepted
Answered
How to change the ratio of sectors for a circle with 8 equal sectors
One possibility: dTheta=360/8; %sector angle t=linspace(0,dTheta)'; sector=polyshape([0,0;cosd(t),sind(t)]); circle=array...
How to change the ratio of sectors for a circle with 8 equal sectors
One possibility: dTheta=360/8; %sector angle t=linspace(0,dTheta)'; sector=polyshape([0,0;cosd(t),sind(t)]); circle=array...
15 days ago | 0
| accepted
Answered
How to convert trajectory of the current vector to grayscale.
Maybe this is what you wanted? load("data.mat") Ia = data(:,1); Ib = data(:,2); Ic = data(:,3); %% Clarke (3 phase → αβ...
How to convert trajectory of the current vector to grayscale.
Maybe this is what you wanted? load("data.mat") Ia = data(:,1); Ib = data(:,2); Ic = data(:,3); %% Clarke (3 phase → αβ...
17 days ago | 1
| accepted
Answered
optimization optimplot capture frame
optimplot does not plot in a figure container of the type that you can get a handle to. Prior to R2025, you could probably have...
optimization optimplot capture frame
optimplot does not plot in a figure container of the type that you can get a handle to. Prior to R2025, you could probably have...
18 days ago | 0
| accepted
Answered
Preconditioning in fmincon
EDIT: You cannot pass a preconditioner on its own, nor would you want to if the true Hessian can be computed. However, using eit...
Preconditioning in fmincon
EDIT: You cannot pass a preconditioner on its own, nor would you want to if the true Hessian can be computed. However, using eit...
22 days ago | 0
Answered
How can I fit data to a piecewise function, where the breakpoint of the function is also a parameter to be optimised?
Why ? Both parabola can intersect below their respective maxima, and nonetheless the point of intersection can be the maximum y-...
How can I fit data to a piecewise function, where the breakpoint of the function is also a parameter to be optimised?
Why ? Both parabola can intersect below their respective maxima, and nonetheless the point of intersection can be the maximum y-...
25 days ago | 0
Answered
How can I fit data to a piecewise function, where the breakpoint of the function is also a parameter to be optimised?
Once you've chosen the coefficients of the first parabola [a1,b1,c1], the breakpoint is determined from, d=-b1/(2*a1) Only the...
How can I fit data to a piecewise function, where the breakpoint of the function is also a parameter to be optimised?
Once you've chosen the coefficients of the first parabola [a1,b1,c1], the breakpoint is determined from, d=-b1/(2*a1) Only the...
26 days ago | 0
| accepted
Answered
suprisingly complicated optimization problem
This is another suggested strategy: to find the minimum possible qmax, given L. This seems at the very least like an important f...
suprisingly complicated optimization problem
This is another suggested strategy: to find the minimum possible qmax, given L. This seems at the very least like an important f...
26 days ago | 1
Answered
suprisingly complicated optimization problem
The motivation of this problem is the creation of the so called, "homogenized" 1-D grid, where consecutive distances between ele...
suprisingly complicated optimization problem
The motivation of this problem is the creation of the so called, "homogenized" 1-D grid, where consecutive distances between ele...
1 month ago | 0
Answered
suprisingly complicated optimization problem
Here's another formulation, closer to your original one. It uses fmincon and is really fast (when the problem is feasible), but ...
suprisingly complicated optimization problem
Here's another formulation, closer to your original one. It uses fmincon and is really fast (when the problem is feasible), but ...
1 month ago | 1
Answered
suprisingly complicated optimization problem
My thought is that you, (1) Do not include L in your list of unknowns. Solve a series of optimization problems for fixed L=1,2,...
suprisingly complicated optimization problem
My thought is that you, (1) Do not include L in your list of unknowns. Solve a series of optimization problems for fixed L=1,2,...
1 month ago | 2
Answered
How to check whether a name is a locally accessible function?
One way, function tf = top_level_function(name) s=functions(str2func(name)); tf=strcmp( s.type , "scopedfunction") ...
How to check whether a name is a locally accessible function?
One way, function tf = top_level_function(name) s=functions(str2func(name)); tf=strcmp( s.type , "scopedfunction") ...
1 month ago | 0
| accepted
Answered
Error `Index exceeds the number of array elements` while loading .mat file
You have created a variable named 'load' in this line, load = 0; % 轴承的载荷（单位：马力）（可能是0、1、2、3马力） and later also in,...
Error `Index exceeds the number of array elements` while loading .mat file
You have created a variable named 'load' in this line, load = 0; % 轴承的载荷（单位：马力）（可能是0、1、2、3马力） and later also in,...
1 month ago | 1
Answered
AppDesigner: Is it possible to interactively stretch/schrink plots ("Axes") in x or y direction separately (NOT zoom in/out both)?
This example looks applicable to you: Restrict Zooming to X-Dimension.
AppDesigner: Is it possible to interactively stretch/schrink plots ("Axes") in x or y direction separately (NOT zoom in/out both)?
This example looks applicable to you: Restrict Zooming to X-Dimension.
1 month ago | 0
Answered
how to create the number of equations from a correlation matrix by excluding the most correlated variables?
That sounds like a bad idea. Normally, in MATLAB, you wouldn't write your equations in scalar form. You would write a matrix equ...
how to create the number of equations from a correlation matrix by excluding the most correlated variables?
That sounds like a bad idea. Normally, in MATLAB, you wouldn't write your equations in scalar form. You would write a matrix equ...
1 month ago | 0
| accepted
Answered
Unable to use structName.?ClassName for VideoWriter class
The .?Classname syntax only works on the class properties with public SetAccess. Unfortunately, the VideoWriter class does not h...
Unable to use structName.?ClassName for VideoWriter class
The .?Classname syntax only works on the class properties with public SetAccess. Unfortunately, the VideoWriter class does not h...
1 month ago | 2
| accepted
Answered
Closed contour with least square differences to dataset
A closed curve, e.g. a circle, would usually satisfy an implicit equation F(x,y)=0 The way to approach that is with implicit e...
Closed contour with least square differences to dataset
A closed curve, e.g. a circle, would usually satisfy an implicit equation F(x,y)=0 The way to approach that is with implicit e...
1 month ago | 0
