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# Judah S

23 total contributions since 2010

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Question

Shooting method for PDE
Hello all, There is a paper which I was going through (attached), where there are two equations which I would like to solve. Eq...

2 years ago | 1 Answers | 0

### 1

Submitted

Runge Kutta 4th order ode
solves ode using 4th order Runge Kutta method

4 years ago | 196 downloads |

Question

time series
Hello, If I have two vectors in excel file: col A 0.34 0.65 0.21 0.54 0.34 0.89 . . col B (22/01/2012 08:10:30...

5 years ago | 1 Answers | 0

### 1

Responded

Re: Convert multiple .FIG files to .JPG without opening the figures.
An example:

5 years ago | 34849 views

Responded

Re: How to add two graphs into one graph?
plot(x1,y1) hold on; plot(x2,y2)

5 years ago | 1032 views

Responded

Re: Taking time average
Problem solved! I had a small error in my code. I am pasting my code in here for someone in need, it works. clear all; clc; %% ...

5 years ago | 1705 views

Responded

Re: Taking time average
Thanks for reply. I wrote code and it seems to be working but I only get averaged time correctly. Date values are showing somee...

5 years ago | 1705 views

Responded

Re: Taking time average
Hi, I don't know what is the problem with fopen, I am not able to use open my file. Here I have uploaded. Please check and sug...

5 years ago | 1705 views

Responded

Re: Taking time average
Thanks for reply. Sampling time is not always constant since I get it from GPS. Can you suggest me a way to import date_time dat...

5 years ago | 1705 views

Posted

Taking time average
Hello, I have two vectors in my problem, one is date_time and another voltage. Length of vectors are pretty long, say currently...

5 years ago | 1705 views

Tangent
Ding

5 years ago | 0

Tangent
Hi Andrew, I am curious to know if I want to measure angle between tangent line and X or Y axis, how can I do that? Thanks...

5 years ago | 0

Error Bars
Thanks Daniel but I am not sure I can use it in this case.

5 years ago | 0

Question

Error Bars
hi, I have some errors on x and y axes and I am able to plot error on the y axis by using errorbar. I am not able to plot err...

5 years ago | 2 Answers | 0

### 2

Tangent
Thanks Andrew. Kindly check my this approach. function tangent1 close all; clear all; clc; format long; %% x = [1....

5 years ago | 0

Question

Tangent
Hi, I have x and y values which represent some sort of sin wave but I don't know the function. something like x = [1.1909845...

5 years ago | 4 Answers | 0

### 4

Posted

Second order implicit RK
Hello Guys, Thanks.

6 years ago | 2061 views

Submitted

6th order Runge-Kutta ODE
It calculates 6th order RK ODE using Fehlberg formulation.

6 years ago | 5 downloads |

Responded

Re: Interpolation function
Hi Matt, I wrote this code: function val=test1(t,x) return I don't know what's wrong here but I am getting val = -6.xxx. ...

6 years ago | 1826 views

Responded

Re: Interpolation function
Thanks Matt. Appreciate it. I don't think that code is calculating derivatives. I ran and found very unexpected result. Judah

6 years ago | 1826 views

Responded

Re: Interpolation function
Lagrange method I presume. I would be thankful if someone helps with with coding.

6 years ago | 1826 views

Posted

Interpolation function
Hello Guys, I have been asked to find out first and second derivatives of a function. ". Please help. Thanks. judah

6 years ago | 1826 views

Submitted

Linear Interpolation
This program calculate approximated value of x at a certain value of t using linear interpolation.

6 years ago | 1 downloads |