# Ryan

X-ray computed tomography research scientist

**Programming Languages:**

MATLAB

**Spoken Languages:**

English

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**Content Feed**

Question

Unrecognized function or variable 'readlines'?

Hi, I am attempting to run the following code to read in the attached text file "data settings XRE.txt. However, even though the...

2 years ago | 1 answer | 0

### 1

answerQuestion

Error: Brace indexing is not supported for variables of this type.

I am attempting to read in a txt file. However, I keep getting a brace indexing error. How is this resolved? >> filename=('Read...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to correct error using RESHAPE

I am trying to use the reshape function in my code, however, I keep getting a reshape error RMphantom = imresize(whatisit,[128 ...

2 years ago | 2 answers | 0

### 2

answersQuestion

How do I change image scale?

I have a image that has the value of 716x716 double and size 716x716. However, I need to scale the image to a size of 128. Can I...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to plot multiple answers on the same graph

I have produced the following code. However, I have multiple values for rnl = 0, 0.0015, 0.0020, 0.0025. How could I update the ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Error code using iradon

I keep getting the error message in my script below when using iradon. How would I resolve this error? I0 = 10^4; noAngles = 5...

2 years ago | 1 answer | 0

### 1

answerQuestion

How do I correct the error "Matrix dimensions must agree"?

I am using the following code, however, I keep getting a matrix dimensions must agree error. How would I correct this? A = [1 0...

2 years ago | 1 answer | 0

### 1

answerQuestion

Why do I receive error for reshape function?

I am using the following code below, however, I keep getting geting the error message for reshape function. How would the code o...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to put square root numbers into Matlab?

How do I put: 7 sqrt(2)/2 so that it equals 4.9497?

2 years ago | 1 answer | 0

### 1

answerQuestion

How do I pad with zeros?

Rather than extracting the last row from the top and bottom of X_proj_corrected, I want to add 100 rows of zeros to either the t...

2 years ago | 1 answer | 0

### 1

answerSolved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

2 years ago

Question

Create single columns of elementwise means

How would I compute the elementwise means of dark fields and flat fields, to get both a single dark field and a single flat fiel...

2 years ago | 1 answer | 0

### 1

answerQuestion

Loop that pads at the top of the sinogram with 100 copies of its top row and at the bottom with 100 copies of its bottom row

How would I create a Loop from this script that pads at the top of the sinogram with 100 copies of its top row and at the bottom...

2 years ago | 1 answer | 0