Community Profile

# Jeremy Marcyoniak

### MathWorks

58 total contributions since 2019

I work in Simulink documentation. Specifically in the Verification & Validation product area, I write primarily for Simulink Coverage.

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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...

5 months ago | 0

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

6 months ago | 0

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...

7 months ago | 0

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

7 months ago | 0

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...

7 months ago | 0

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...

7 months ago | 1

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 ...

7 months ago | 0

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7 months ago | 0

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.

7 months ago | 0

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 ...

7 months ago | 1

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How to print : What's Your Name

8 months ago | 0

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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,:) =...

8 months ago | 3

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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...

8 months ago | 0

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...

8 months ago | 0

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...

8 months ago | 0

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...

8 months ago | 0

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

8 months ago | 0

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

8 months ago | 0

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

8 months ago | 0

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...

9 months ago | 0

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;

9 months ago | 0

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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...

9 months ago | 1

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...

9 months ago | 0

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

9 months ago | 0

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

9 months ago | 0

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"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 ...

10 months ago | 0

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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...

10 months ago | 0

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Indexing portions of a vector with array

10 months ago | 0

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...

10 months ago | 0

Interval where values are greater than treshold
I believe you are looking for the find command. find(Logic)

10 months ago | 0