# daniel adams

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**Content Feed**

Question

How to write subscripts for the legend of a graph

In the legend of a graph I want one of the graphs to be labeled , is there anyway to get this kind of subscirpt writing in matla...

2 years ago | 1 answer | 0

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answerQuestion

How to keep scientific notation in string.

I have some values in an array in matlab epsilon=[1e-01,9e-02,8e-02] I want to turn these values into a string so I can use th...

2 years ago | 2 answers | 0

### 2

answersQuestion

Repeating elements of an array

Say for some . How can I create an array of size which is just i.e repeat the elements of times each in a row. Note I ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Turn a two dimensional vector into an array

I have a subset of . I have discretised this subset into points, , also consider an identical copy of , . Now, I have a giv...

2 years ago | 1 answer | 0

### 1

answerQuestion

Using symbolic math to retain accuracy. Arrays

Hi folks. I am trying to avoid numerical underflow using symbolic math. Basically at some point in my algorithm I have a mat...

2 years ago | 1 answer | 0

### 1

answerQuestion

Storing small numbers and logarithms.

Hi I have the following problem, in my code I need to calculate for very large. The largeness causes matlab to store and to...

2 years ago | 2 answers | 0

### 2

answersQuestion

Precision number throughout scripts and functions.

I have a script that calls many functions, when I run the script I want matlab to use a specific value of precision throughout. ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Why is this Matrix Multiplication taking so long... using diag function

Hi the vectors are of length , and an array is of length I want to turn into diagonal arrays to calculate the product and ...

2 years ago | 0 answers | 0

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answersQuestion

Discretise a domain into a grid of uniform volume size

Given a domain say in how do I split/discretise the domain into a grid of uniform volume/ fixed number of grid points? For ...

2 years ago | 1 answer | 0

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answerQuestion

Save figures from for loop into a subfolder of the current folder.

I will use math notation instead of saying arrays etc. In what follows and . I want to plot each column of against on separat...

2 years ago | 1 answer | 0

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answerQuestion

Making a movie and saving figures

Given an array / matrix of size and a array / vector of size . I want to make a movie with frames each one being the followi...

2 years ago | 1 answer | 0

### 1

answerQuestion

Loose question, on function handles / speeding up run times.

This is quite a loose question but I was very surprised to find this out so thought I would ask. I was running a script where I...

2 years ago | 0 answers | 0

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answersQuestion

Summing elements of a vector without a for loop

Given a vector/array of length , I would like to create a new vector of length where the 1st component is the sum of the 1st...

2 years ago | 2 answers | 0

### 2

answersQuestion

2-dimension PDE on Matlab.

Matlab has this nice document for 1-dimensional PDE solver https://uk.mathworks.com/help/matlab/math/partial-differential-equati...

2 years ago | 0 answers | 0

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answersQuestion

Setting a lower bound on the values of an array ( can it be done without a for loop?)

I have a matrix the values of it are very small, some are so small that they appear as NaN. Is there an efficient way to go thr...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to turn a matrix into a vector without using for loop !

Given a matrix is there a way in Matlab to construct a vector which is just the rows of layed out one after the other? Note I ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Turning a product of two vectors into a matrix without using for loops?

I have to two vectors and , each of length . I want a matrix where the elements of are . How can I construct on matlab with...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to find a PDE solver ( new matlab user )

Hi folks, I am studying the Fokker-Planck equation $$ \partial_t \rho(x,t) = \text{div}(f(x) \rho(x,t))+ \Delta \rho(x,t) $...

2 years ago | 1 answer | 0

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answerQuestion

Writing the dirac function as a function handle

Hi I want to write the dirac function at $i$ as a function handle, for example the code will look something like this dirac_...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to use the sum function on a matrix to get the sum of the rows not the columns

How to use the sum function on an array to get the sum of the rows not the columns : I want to have an array of the sum of the ...

2 years ago | 1 answer | 0

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answerQuestion

Cost matrix from an array without for loop.

Hi I want to create a matrix with entries the absolute value between each point in an array. My array is called domain, and it ...

2 years ago | 2 answers | 0