Community Profile

# warnerchang

Last seen: Today Attivo dal 2021

Never be afraid to try something new

Programming Languages:
MATLAB
Spoken Languages:
English

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Risolto

Make a Plot with Functions
Make a plot and test

circa 2 mesi fa

Risolto

Plotting Practice
Plot cos(x) vs x as shown in the figure below. Include the appropriate title, x-label, and y-label. Note, it is case sensitive. ...

circa 2 mesi fa

Risolto

Dog Statistics
The vectors ht and wt contains the heights and weights of 20 golden retrievers. In some cases, it was not possible to make both ...

circa 2 mesi fa

Risolto

Determine if x is a combination of m and n
Given positive integers x, m, and n, determine if x can be written as x = am + bn for any (non-negative) integers a and b. Your ...

circa 2 mesi fa

Risolto

Create an arrow matrix
An arrow matrix is a square matrix that contains ones on the diagonal, the last column, and last row. ...

2 mesi fa

Risolto

The matrix grades contains raw grades for 7 students who took your course. Each row represents a different student. The first 7 ...

2 mesi fa

Risolto

Simpson's Paradox - Calculate correlation coefficients for groups of data
Simpson's Paradox is a statistical phenomenon where groups of data can have a characteristic while the whole data set together h...

2 mesi fa

Risolto

Find the minimum of the column-maximums of a matrix
Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...

2 mesi fa

Risolto

Calculate the mean of each half of a matrix
Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...

2 mesi fa

Risolto

Find Closest Constant
Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...

2 mesi fa

Risolto

Write a function that takes N as the input, and outputs a matrix whose upper-left (NxN) quadrant contains all ones, the lower-ri...

2 mesi fa

Domanda

How to plot a 3D disk with several holes quickly?
I used "patch" to plot a 3D disk with single central hole successfully, however, I do not know how to plot a 3D disk with severa...

5 mesi fa | 0 risposte | 0

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Domanda

Ｌｉｍｉｔ　ａｎｇｌｅ　ｉｎ　［－９０，９０］　ｄｅｇｒｅｅ
Aｓ　Ｉ　ｗａｓ　ｕｓｉｎｇ　ｏｄｅ４５　ｔｏ　ｓｏｌｖｅ　ＯＤＥｓ，　Ｉ　ｄｏ　ｎｏｔ　ｋｎｏｗ　ｔｏ　ｌｉｍｉｔ　ｔｈｅ　ｒｅｓｕｌｔ　ｉｎ　［－９０，９０］　ｄｅｇｒｅｅ．　Ａｎｙｏｎｅ　ｍａｙ　ｐｒｏｖｉｄｅ　ｓｏｍｅ　ｈｅｌｐ？

7 mesi fa | 1 risposta | 0

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risposta

Domanda

label is not at the center of axes
when I was plotting a 3D line, I tried to use xlabel/ylabel to make a axis label. However, I found these labels are not at the c...

8 mesi fa | 1 risposta | 0

### 1

risposta

Domanda

how can I change lighting using codes?
Now, I plot a figure, however, it is dark. And I use the button to change the lighting, I am wondering whether there exists a me...

8 mesi fa | 1 risposta | 0

### 1

risposta

Domanda

How to define a colormap easily
I tried to define a colormap, however it is rather difficult, because I have to choose a value and then I see what the color it ...

8 mesi fa | 2 risposte | 0

### 2

risposte

Domanda

what is the time complexity of function 'reshape'
anyone knows what is the time complexity of function 'reshape'?

8 mesi fa | 2 risposte | 0

### 2

risposte

Domanda

why use limit function goes wrong
syms x f=(2/pi*atan(x))^x; limit(f,x,inf,'right') Prompt：Inconsistent limit direction. however，I tried to transform the f...

8 mesi fa | 1 risposta | 0

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risposta

Domanda

How to adjust the brightness of an image in YCbCr color space
anyone know how to adjust the brightness of an image in YCbCr color space?

8 mesi fa | 1 risposta | 0

### 1

risposta

Domanda

Why two methods give different results, and which is correct?
I use ode15i and ode45 to solve an implicit function, however two methods give different results, which is correct? clear clc ...

8 mesi fa | 1 risposta | 0

### 1

risposta

Domanda

why it will go wrong using 'cell'?
Recently, I ran two codes as follow: a={[],[]};a{1}(a{1}==3)=[]; % it will go wrong b=cell(1,2);b{1}(b{1}==3)=[];

8 mesi fa | 1 risposta | 2

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Risolto

Find Logic 1

11 mesi fa

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