Community Profile

photo

the cyclist


Last seen: 1일 전
4,582 2011 이후 총 참여 횟수

Data scientist at Cohen Veterans Bioscience; Obsessive runner. Professional Interests: Predictive modeling, statistics. (I don't respond to email via author page, but will usually look at a question if you send me a link to it.)

연락

the cyclist's 배지

  • Scavenger Finisher
  • Master
  • Thankful Level 4
  • 36 Month Streak
  • Likeable
  • Famous
  • Quiz Master
  • First Review
  • First Submission
  • Revival Level 3
  • Knowledgeable Level 4
  • First Answer
  • Puzzler
  • Speed Demon
  • Creator

모두 보기

참여 게시물
보기 기준

답변 있음
string for figure title ignores text after variable
Write it as one string, with the variable in the midst of it" t = 8.2; titlestr=sprintf('Time=%6.5f sec',t(1)); title(titles...

4일 전 | 0

| 수락됨

답변 있음
random selection of number among 2 numbers
Here are a couple ways: 2*randi([0 1]) 2*round(rand())

4일 전 | 1

답변 있음
How can I get un-descend index of latent in pca function
My answer to this question gives a detailed explanation of how to use MATLAB's pca function, including how to reduce the number ...

4일 전 | 1

| 수락됨

답변 있음
Feature vector dimension reduction (PCA)
I have written an answer to this question that explains in detail how to use MATLAB's pca function, including how to do dimensio...

4일 전 | 0

| 수락됨

답변 있음
Error using vertcat Dimensions of arrays being concatenated are not consistent.
data3 = [data1 data2] will concatenate them horizontally rather than vertically. You can do that, because they have the same nu...

8일 전 | 0

| 수락됨

답변 있음
build an array y depending on x
You have a few problems to fix: As you can see in its documentation, the input function requires you to include some prompting ...

9일 전 | 0

답변 있음
Unique numbers, not ordered
I believe this does what you want: X1 = [1 23 36 45 47 2]'; X2 = [1 36 47 2 6 ]'; X3 = [1 22 23 47 2 4]'; ...

9일 전 | 0

답변 있음
Input from PCA to train in SVM
I have written a "tutorial" on how to use and interpret MATLAB's pca function here. Lots of users have asked questions (some of ...

11일 전 | 0

| 수락됨

답변 있음
Assign a label to a point of a matrix in if statement
By default, Kappa_j is going to be a numeric array, and there cannot accept character input. Instead, you could define it as a c...

12일 전 | 1

| 수락됨

답변 있음
Subtraction of set value from specific elements in column once criteria met
threshold = 5000; % Set this to the limit value you want x(x>threshold) = x(x>threshold) - 65535;

14일 전 | 0

| 수락됨

답변 있음
calling script in another script
This question and answer should help you.

14일 전 | 0

답변 있음
Binary Logistic Regression - beginner
If you have the Statistics and Machine Learning Toolbox, you can use the fitglm function to fit a binomial logistic regression. ...

17일 전 | 0

| 수락됨

답변 있음
conversion double to array
If you want your 34x1 double to be in a single cell of a cell array, then ... inder = rand(34,1); inderCell1 = {inder} If you...

17일 전 | 0

| 수락됨

답변 있음
Reproduce a best-fit 4-parameter sigmoid
It is difficult when you say you have no idea. But, here are a few thoughts. If you have never used MATLAB at all, then you hav...

18일 전 | 0

답변 있음
the "taylor" function does not work for me (beginner)
In the assignment statement for T3, you capitalized "Taylor". MATLAB is case-sensitive, so you must use "taylor".

19일 전 | 2

답변 있음
Iterator goes infinite when changing step from 1 to 0.1
It's difficult to follow exactly what it going on in your code. I haven't traced the logic completely, but I figured out that wh...

19일 전 | 0

| 수락됨

답변 있음
Shorten the values from a column in another column.
The specific solution is potentially very dependent on ... the input format -- there are several way to read in Excel, leading ...

19일 전 | 0

| 수락됨

답변 있음
Operations with function handles / anonymous functions
Is this what you want? function1 = @(x) x(1)^2+5 function2 = @(x) 2*x(2) function12 = @(x) function1(x) + function2(x)

19일 전 | 1

| 수락됨

답변 있음
Shorten the values from a column in another column.
If these are numeric values, I think maybe you can do output_values = unique(floor(input_values)); But see my comment above, f...

19일 전 | 0

답변 있음
Covariance matrix as a diagonal matrix or not??????
I am definitely not an expert in this, but my guess is that these statements might only be strictly true for signals of infinite...

20일 전 | 0

답변 있음
summing columns based on certain interval
The best answer will depend on what specifically you want the output to be, and also how generalizable the solution needs to be....

20일 전 | 0

| 수락됨

답변 있음
How to delect the zero values in table
If all of the table entries are numeric, then this will work: % Create an example input table x = [0; 1; 0; 2]; y = [0; 1; 0;...

20일 전 | 0

| 수락됨

답변 있음
Exponent error calculating integral.
I expect you want phi.^3 instead of phi^3 inside your function fun

20일 전 | 0

답변 있음
How to generate a sparse matrix for a given array?
Here is one way: A = [1 3; 1 4; 2 3; 2 5; 3 5; 4 5]; d = max(A(:)); B = sparse(A(:,1),A(:,2...

21일 전 | 1

답변 있음
Assign rank to values in a matrix
Here is one way. (I did a smaller array, so the result is easier to verify.) % Set random seed for reproducibility rng default...

21일 전 | 1

| 수락됨

답변 있음
use mvnrnd with some conditions
Let's take this small example in which we generate just 3 pairs of correlated random numbers: n=3; % Generate 3 pairs, instead ...

24일 전 | 0

답변 있음
change variable in function_handle
I think this is what you mean? % Define f f=@(x) sin(x); % Derive g from f g = @(x) f(x+2); % Show that it gives expected r...

25일 전 | 0

| 수락됨

답변 있음
How to change legends' name
Here is a basic way you can do it: N = 3; figure hold on for ii = 1:N plot(rand(1,7),'DisplayName',sprintf('Theta %d'...

26일 전 | 0

| 수락됨

답변 있음
I want answer b for all value of N but it only read for latest value of N and value b become zero for 1st and 2nd of N. How i fix this problems?
I think you want b = (a*A*f)./(pi*Dm*N); I suggest you read Array vs. Matrix operations.

26일 전 | 0

| 수락됨

답변 있음
How do you load m-files that contain filenames with integers and strings?
Use the %d notation, and a cell array for storing: for ii = 1:50 B{ii} = load(sprintf('TTsim%dVariable.mat',ii)); end

26일 전 | 0

Load more