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Chris C


Afton Chemical

Active since 2014

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Answered
Solve equation without symbolic math toolbox
You can run this with two functions. The first function I have designated as myMain.m and it is written as.. r0 = rand(3,3...

10 years ago | 0

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Answered
I need to write a script that will prompt the user for four course numbers. Each will be a string of length 5 of the form ‘CS101’. These strings are to be stored in a character matrix.
This can be done in a structure setting as well which would probably make storage and recall easier, but to answer your question...

10 years ago | 0

Answered
Write a script that prompts the user for a string, error-checking until the user enters something (the error would occur if the user just hits the Enter key without any other characters first). The script then prints the length of the string.
This blurb of code is written to accept a string as an input. If you don't want it to accept only a string then you can get rid...

10 years ago | 0

Answered
How to implement something similar to Vlookup with different lenght's vectors??
Okay, I wrote a function that will do this for you. While I was attempting to pull the data from the files you supplied "Compan...

10 years ago | 0

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Answered
Error message - matrix dimensions must agree
Okay, I found them (I think). In line 104 that you reference above it looks like there are several variables referenced: A,a,t ...

10 years ago | 0

Answered
How to implement something similar to Vlookup with different lenght's vectors??
In order to provide you with a set of code to solve your problem I would have to know the database as a whole. However, to get ...

10 years ago | 0

Answered
code for my integrals in Matlab!
If you want it done analytically, then you need to get the symbolic toolbox I believe.

10 years ago | 0

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Answered
Error message - matrix dimensions must agree
The .* is used whenever you have to arrays or matrices that you want to multiply each individual element with the corresponding ...

10 years ago | 0

Question


How do I convert a string input to an executable equation?
I am developing a nice GUI for my company (those who don't want to code). It will give them areas to add their equations and de...

10 years ago | 3 answers | 0

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Answered
Loop if for one j
You need to break out of the j-loop upon that condition and then condition a continue statement within the k-loop.

10 years ago | 0

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Answered
when i testing the datasets by inserting corrupted value i keep on getting the error such as ???index exceed matrix. what is the meaning??
testRecord is an array of 6 elements. You call an indexed value of testRecord within your for loop using testRecord(fix*6...

10 years ago | 0

Answered
takespecific elements from matrix to build new one
If your original matrix is called A, then B = [A(1:10,:); A(31:end,:)];

10 years ago | 1

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Answered
How can we join two matrices of two dimmention
Write it as below assuming that matrix B and A are of the same dimension. C = [B;A];

10 years ago | 0

Answered
Generating random integer from -x to x
xmin = -x; xmax = x; r = round((xmax-xmin).*rand(10,1)+xmin);

10 years ago | 0

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how to install curve fitting toolbox
I had this problem with all of my toolboxes. I had to go back and reinstall matlab.

10 years ago | 2

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Answered
How do i use Simpsons 1/3 function in matlab for this information??
Try this <http://www.mathworks.com/matlabcentral/fileexchange/33493-simpsons-13-and-38-rules/content/simpson.m code>.

10 years ago | 0

Answered
Can Somebody help me to write this equation in Matlab to get the value of Lambda?
In order to calculate the left hand side (LHS) you'll want to determine when the nth term is small enough to neglect. The follo...

10 years ago | 0

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Answered
a simple Question about loops
You initialize v incorrectly. Try it this way.... a=[1 2 3 5 4 8]; v=ones(length(a)); v(1)=a(1); for k=2:length(a...

10 years ago | 0

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Answered
How can I discretize a function so I can use it in a model?
The great thing about your question is that you already have the continuous functions. The greater challenge is usually finding...

10 years ago | 0

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Answered
How can I remove the power of a matrix?
So, the reason Matlab displays data in that manner is to make the best use of the available real estate. However, if you still ...

10 years ago | 0

Answered
How to find max value of three varibles using if,else,end.
Give this code a shot. You would be able to make the variable "data" listed here as a vector of whatever data you like and this...

10 years ago | 1

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Answered
index must be a positive integer or logical.
I'm still not reall clear on what you're looking for, but try this version of Marta's code... c1=3.29; c2=9.90; c3=0.77; ...

10 years ago | 0

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Question


How can I create a geometry in PDE toolbox to include entrance/exit plumbing with a packed column between?
I am attempting to model flow through a packed bed using the PDE toolbox. I am having a hard time with the geometry. I would l...

10 years ago | 0 answers | 0

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Question


Anyone have ideas on how to incorporate heat of reaction release into the 2d heat equation?
My system is a semi-solid (assume solid) body which starts out at T0 (temperature). Three sides of the solid are open to ambien...

10 years ago | 0 answers | 0

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