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Jeremy

MathWorks

Last seen: 5 months ago Active since 2019

I am the doc writer for Simulink Coverage. My responsibilities include documenting new features, creating new examples, and maintaining existing documentation. My areas of interest are process control and nuclear reactor physics.

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Answered
How to load the function (.m) to the workspace when the simulink run?
It appears that you are using MATLAB R2021a on Windows. My understanding of your issue is that you've moved the model to a diff...

8 months ago | 0

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Answered
Why does my plot say undefined variable or function for X2?
Your code returns an undefined function or variable X error, because you try to define Areaofvertical = (Lv*X); before you hav...

1 year ago | 0

Answered
Saving a struct property within a class object
classdef testclass properties (GetAccess=public, SetAccess=public) S number end methods ...

1 year ago | 0

Answered
Calling external function in ode45
function FractionY=ffy(y) Did you save this function as FractionY.m or as ffy.m? Because as it's written, the function is actua...

2 years ago | 0

Answered
any suggests, solutions ?
I changed one of them for you and re-attached it here.

2 years ago | 0

Answered
Unable to perform assignment because the left and right sides have a different number of elements.
Where is the definition of T? I am guessing that T is a vector, which makes su = hin*P*T*DX/Ac; a vector, and then you're trying...

2 years ago | 0

Answered
why isn't my code iterating?
Your while loop is converging on a value that is less than 1.2*120. Consider adding an additional parameter that breaks the loo...

2 years ago | 1

Answered
Receiving error vectors must be the same length when trying to plot.
T is 1x1 because none of your if statements are ever true. You want if t <= 144 %do things elseif t > 144 && t <= 358 ...

2 years ago | 0

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Answered
download 2019b update 3
https://www.mathworks.com/support/search.html/answers/473278-how-can-i-rollback-an-update?q=&fq=asset_type_name:answer%20categor...

2 years ago | 0

Answered
Set up a 6 element column vector f such that the value in row n of f is n/B
If I am understanding correctly, n is simply the row number. e.g. row 1 of f is 1/5, row 2 is 2/5 etc.

2 years ago | 0

Answered
How can I change the initial battery charge of the example microgrid in Matlab?
If you right click on the Battery_Simple_Dynamics subsystem, you can go to Mask -> Look Under Mask. Here, you will see that the ...

2 years ago | 1

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Answered
How to print : What's Your Name
fprintf('What''s your name\n')

2 years ago | 0

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Answered
How to set a legend with a label for two or more lines?
This isn't a particularly elegant solution, but I think it does what you want. x = linspace(0,0.5); for i = 1:3 y1(i,:) =...

2 years ago | 3

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Answered
How do I save a figure as the title of the figure?
Assign your title to an object th = title('WT 0HR', 'fontsize', 20); And extract the title string using dot syntax, and use it...

2 years ago | 0

Answered
Find data between min and max
Something like this? t = linspace(0,2*pi,201); y = sin(t); plot(t,y,'LineWidth',2) grid on hold on minid = find(islocalmin...

2 years ago | 0

Answered
Can't get tiled graph to show two lines inside of a loop, can anyone help?
I found two issues. One is, your plot commands are inside the nested FOR loop and they need to be outside the first END statemen...

2 years ago | 0

Answered
How can I find index from the cell array and then extract desired value from it.
Hi, Normally this would be easy using cell2mat because it appears each entry of the cell is meant to be a 1x3 array. However, l...

2 years ago | 0

Answered
3x3 matrix with while loop
n = 3; m = 3; A = zeros(n,m); while det(A) == 0 A = rand(n,m); end

2 years ago | 0

Answered
quick reference guide for plotting
https://www.mathworks.com/help/matlab/ref/plot.html#btzitot-LineSpec

2 years ago | 0

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Answered
input multi workspaces in function
Put the data into one array, pass it into the function, and parse the array inside the function?

2 years ago | 0

Answered
How can I run Simulink 'Build model' from the command line
I'm not sure if I'm understanding your use case completely, but I think you are looking for sim? sim('modelname.slx'); If that...

2 years ago | 0

Answered
Replace all instances of a value with random number
A = [0 1 0 1; 1 0 1 1; 0 0 1 1]; id = A==1; r = rand(1,nnz(id)); A(id) = r;

2 years ago | 1

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Answered
How to remove the table size below the table header; e.g., get rid of --> " 1×7 table "
The 1x7 table is not part of the table, it's part of the default display when you type a variable name with no formatting, you c...

2 years ago | 1

Answered
how to keep labels in matlab with multiplotyyy function ?
x = linspace(1,10,201); y1 = x.^2; y2 = log(x); pyh = plotyy(x,y1,x,y2); legend('x^2','ln(x)') ax = gca; xlabel('x') ax.X...

2 years ago | 0

Answered
Matrix Shifting: columns to single row
A = [1 2 3; 4 5 6; 7 8 9] B = reshape(A',[1,numel(A)])

2 years ago | 0

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Answered
Can the diff function go the opposite direction?
sure, flip your matrix with fliplr or flipud and then run diff

2 years ago | 0

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Answered
"Index exceeds the number of array elements (217)"
If you have 217 rows and you're trying to index row 478 then Matlab will throw an error also, the ,1 will need to be outside ...

2 years ago | 0

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Answered
How to find values in a range and save them to different arrays, repeatedly
target_times= randi(120000,1,64); bins = 10000:10000:120000; c = cell(12,1); c{1} = target_times(target_times < bins(1)); fo...

2 years ago | 0

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Answered
Indexing portions of a vector with array
I had to think about this for a while, but I think that this accomplishes the task you are looking for a = 1:12; id_start = [4...

2 years ago | 0

Answered
Having issues with a function: creates NxN matrix instead of a column vector
Are the inputs p, sigma, N scalar values or vectors? Does normrnd return a vector or a scalar? That seems to be a function you w...

2 years ago | 0

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