Community Profile # Hollis Williams

Last seen: 4 månader ago Active since 2017

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Processing Frames from a Video
I have a piece of code where I read an image and then do some processing with it. If I instead have an AVI file, is there a sim...

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Plotting Blue Pixel Values against Distance
I have obtained the following blue strip where the ''brightness'' decreases as one moves from left to right. If the total dista...

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Numerically solving a pair of coupled second order ODES with odeToVectorField
I am attempting to use some of the functions in MATLAB to numerically solve a pair of coupled second order ODEs of the form \...

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Putting Screenshots from Videos into an Array
I have a set of 3 videos and would like to take four screenshots from each one at the same times (ie. frames) to put into a 3x4 ...

mer än ett år ago | 0 answers | 0

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Drawing a Best Line Fit for some Points
I have collected some experimental data which results in a set of points with x- and y- coordinates, if I put these into a vecto...

nästan 2 år ago | 1 answer | 0

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Plotting Two Data Sets on a Figure
I have two sets of data which can be plotted as a sets of discrete points given by (x,y) coordinates on a 2D plot. Is there som...

mer än 2 år ago | 1 answer | 0

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Plotting Multiple Curves on the Same Graph
I am plotting a graph of radial velocity against varying radius, but there is also a parameter in the velocity expression simila...

ungefär 3 år ago | 1 answer | 0

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How to use Maths Font for Graphs in MATLAB
I have produced a graph from some simulations which I intend to use in presentations and/or journal articles, but I have been to...

ungefär 3 år ago | 1 answer | 0

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Improving Presentation of a Graph
I have produced a graph running some simulations which I would like to use in Powerpoints and whose presentation and professiona...

ungefär 3 år ago | 3 answers | 0

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Superimposing Graphs by Importing Data
I have two different MATLAB files where I end up with a graph of drag force plotted against a dimensionless parameter. I would ...

ungefär 3 år ago | 0 answers | 0

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Graph of Convergence for Drag Force
I have a code with MATLAB where I set the number of boundary nodes around a sphere and then evaluate functions at the nodes to g...

ungefär 3 år ago | 0 answers | 0

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Question

Adding Zeroes and Ones into a Vector
I have a 1x300 vector and would like to make it into a 1x400 vector by inserting a 0 after every third element, a 0 after every ...

ungefär 3 år ago | 2 answers | 0

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Converting to a New Coordinate System
I have a column vector and am trying to convert it into a new coordinate system. The way I would like to do this is to start wi...

mer än 3 år ago | 0 answers | 0

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I have a row vector which I have created by repeating the same vector many times and would like to add zeroes onto the vector, s...

mer än 3 år ago | 1 answer | 0

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Cross Product of an Array
I have an array of size 3 x 100 and I basically want to create a new array where I take each column vector in the array and comp...

mer än 3 år ago | 2 answers | 0

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I was using MATLAB and then had an error with my desktop and had to turn the computer off, I think I made the mistake of not clo...

mer än 3 år ago | 1 answer | 0

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Change a 3x100 double to a 300x1 double
I have a 3 x 100 double ie. 100 column vectors next to each other all with 3 rows, and I need to take each column vector and put...

mer än 3 år ago | 1 answer | 0

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Switching a Boundary Condition to Spherical Coordinates
I am working with a problem on a sphere where I have a formula which gives me the coordinates of a number of nodes distributed a...

mer än 3 år ago | 0 answers | 0

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Creating a Linear System with a Double Loop
I am dealing with a system where I have one sphere inside of a larger one and I work with the radial vector for the distance bet...

mer än 3 år ago | 0 answers | 0

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Question about Notation for Creating Matrices
I am currently reading a piece of MATLAB code in which matrices are created, but I am not sure what exactly the notation with co...

mer än 3 år ago | 1 answer | 0

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How to Make a Matrix Diagonal with Matlab?
I am working on a quantum mechanics problem and would like to get a 4x4 matrix A into diagonal form such that A=UDU^{-1}. Basic...

mer än 4 år ago | 1 answer | 0

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Distance between Global Maximum of a Wave Pattern and next Consecutive Maximum/Minimum
<</matlabcentral/answers/uploaded_files/82497/1000sec.jpg>> I have a set of wave patterns (one example wave pattern included ...

ungefär 5 år ago | 1 answer | 0