# Khang Nguyen

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**Feeds**

Question

Optimize live plotting with a large data set

Hi, I have a large data set (16 000 datas) that I am trying do a live plots. But I notice that it getting slower as the code pr...

10 maanden ago | 1 answer | 0

### 1

answerQuestion

Sorting columns by header names

Hi, I have a table with mess up data location like this. I want to bring all the same Columns letters together. I am wond...

10 maanden ago | 2 answers | 0

### 2

answersQuestion

How to call function in different file path

hi, I am currently working on a big project, to organize it I want to create many folder and put the functions in it. for exa...

ongeveer een jaar ago | 1 answer | 0

### 1

answerQuestion

How to use ODE4 to solve second order ODE

How to use ode4 to solve second order ODE? ode4(https://www.mathworks.com/matlabcentral/answers/98293-is-there-a-fixed-step-ord...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Unrecognized function or variable 'ode4'.

I am trying to use ode4 to validate with the Runge-Kutta method, but keep getiing this error when I call ode4 "Unrecognized func...

meer dan een jaar ago | 2 answers | 0

### 2

answersQuestion

How to you put sin function in Simulink

How do you put this function in simulink . -2 cos(t/2)+2 I tried using the sine wave sine block in simulink but can not pl...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Array don't store value?

I tried to use improve euler method but they array only start the starting value doesn't store the rest of the estimation. Only...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

how to go from NED to ECI frame?

Hello! I am wondering how do you go from NED frame to ECI frame? I got a NED frame from the WMM block but it say that the dime...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

Why isn't my code graph anything.

Why don't matlab show me a graph. I ran it last time and it ran perfectly. Why nothing happend this time? %create a cater plot...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

Graphing using Matlab. How would you graph a function using matlab?

I am wondering how can you graph a function in MatLab? This is how I do it but the code doesn't work % for matrix A a = 24; ...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

graphing with a matrix using matlab

If I have a reduce normal form Matrix on matlab for example A = [ 1 0 0 3 ; 0 1 0 6 ; 0 0 1 5] I want to graph it in an equati...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

My is my matrix can't multiply with this vector

I try to multiply a matrix with a vector to do the least square problem. Even thought my matrix and vector have the same dimenti...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

why is my matlab code doesn't give the right answer

I want to do remain sum form 0 to 3 or sqrt(x+1) from the left with 10 to 100 sub interval, the graph have to go from small to ...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

why is my vector bigger than how I created

I tried to do a remain sum using matlab and graph it, why is my sumvec vector is 101? should the while loop runs from 10 to 100...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

draw a line to where the area approach?

I want to draw a line to where the area is approaching. How should i do it? % excersice 1: clear all a = 1 area = 0 figure...

meer dan 3 jaar ago | 2 answers | 0

### 2

answersQuestion

how to graph using loop?

I want to calculate a problem and graph it I want to graph i and area but it only show one point on my graph % question1 clea...

meer dan 3 jaar ago | 2 answers | 0