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Jeremy Marcyoniak


MathWorks

39 total contributions since 2019

Jeremy Marcyoniak's Badges

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  • Knowledgeable Level 2
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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...

18 jours 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;

18 jours ago | 0

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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...

20 jours 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...

20 jours 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)])

environ un mois 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

environ un mois 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 ...

environ un mois 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...

environ un mois 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...

environ un mois 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...

environ un mois ago | 0

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

environ un mois ago | 0

Answered
How can I shade confidence intervals and assign colors to frequency spectra plot (pwelch)
The plot commands accept a 3 element vector in place of the built-in colors, each element being a number between 0 and 1 represe...

environ un mois ago | 0

Answered
Add error bars to grouped bar plot
Like this? https://www.mathworks.com/help/matlab/creating_plots/bar-chart-with-error-bars.html

environ un mois ago | 0

Answered
How map values of array to 0 and 1
normalized_array = normalize(array,'range',[0 1]);

environ 2 mois ago | 1

Answered
Brace indexing is not supported for variables of this type
Mu_s{:} < 1.0 && Mu_d{:} < 7.0

environ 2 mois ago | 0

Answered
Using now() in different time zones (or with daylight saving time)
From the documentation for now Limitations MATLAB Online returns the current date and time in Coordinated Universal Time (UTC...

environ 2 mois ago | 0

Answered
Having an array V from 0 to 44.8 in steps of 0.01, I try to use the function find(V == 30) and I get and empty array. Why?
I suspect this is a case of roundoff error. A workaround would be find(Volt > 29.999 & Volt < 30.001); Using whatever toleranc...

environ 2 mois ago | 0

Answered
The code runs, but imediately deletes the animation and does not update
delete(P1_pos_cir); delete(P2_pos_cir); delete(P3_pos_cir); delete(P4_pos_cir); delete(P5_pos_cir); ...

environ 2 mois ago | 0

Answered
Confusion manipulating timestamp and plotting
Is each number supposed to represent a datetime as a "datenum" data type? t = 0.0517361112797516; d = datetime(t,'ConvertFrom'...

environ 2 mois ago | 0

Answered
How to include string + numbers in a table using a for...end routine
It sounds like you might want to use the command readtable This will read your entire spreadsheet as a table data type

environ 2 mois ago | 0

Answered
Error while using writematrix to save complex values in a .txt
csvwrite Does this correctly. I will look into writematrix

environ 2 mois ago | 1

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Answered
Using fzero to solve an equation with different constants every time
x0=[0;1]; By passing a vector into fzero you are telling it that you think the solution is between these values, so it will sta...

environ 2 mois ago | 0

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Answered
How do I get the date out of a filename using regexp?
str = 'xxx_2014_06_03_00_00_01'; id = regexp(str,'\d') Returns: id = 5 6 7 8 10 11 13 14 16 ...

2 mois ago | 0

Answered
Solving non-linear equation including natural logarithm
Most probably, there is no analytical solution for y in terms of (a,b,c,x). You can solve numerically for y at given values of a...

2 mois ago | 0

Answered
how to mathematical modelling the solar PV in Simulink?
Hi, The "sum" block in the "Photo Current" subsystem is meant to be +/- according to the model - your current setup has a +/+. ...

2 mois ago | 0

Answered
How can I extract a certain numerical value from a text file?
I have written a similar function - something along the lines of fopen(fid) while feof ~= 1 str = fgetl(fid); if str...

2 mois ago | 1

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Answered
Error when opening a variable
What exactly are you doing to encounter this error? Are you using load ?

2 mois ago | 0

Answered
Distance between all points in array and delete the second point if it is less that certian value (Victorized)
Something like this? n= 1000; Rx=rand(n,1)*0.2; Ry=rand(n,1)*0.2; Rz=rand(n,1)*0.2; R_all=[Rx Ry Rz]; Df=0.002; Dr = diff...

2 mois ago | 0

Answered
Using a for loop to put a number of 2D arrays in a directory into a single 3D array
I misread at first, so I'm editing: If you read in 3 2D arrays you can concatenate them - if A,B,C are each 2D then D = A; D...

2 mois ago | 0

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