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Abdolkarim Mohammadi-Balani


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178 total contributions since 2019

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Answered
Z must be a matrix, not scalar or vector - surface plot
You use surf when you have z value for each combination of x and y vectors. Here, you have x, y, and z vectors, so you should dr...

2 dagen ago | 0

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Answered
Hi everyone, How do I call functions in simevents for selected queues to halt entities blocking them from departing whenever entities with specific attributes are injected into the system (by a deliberate event).
I think you must implement this complex system with MATLAB Discrete-Event System (MDES) only, since you need to iterate over que...

11 dagen ago | 0

Answered
How do you model transfer batching in simevents if you use orders as entities and order quantity as an attribute?
You should use an Entity replicator block, which replicates entities based on the order size. Replicas are production batches af...

13 dagen ago | 0

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Answered
How can I bring 5 variable at 5 different axis angles and plot the correlation coefficient with respect to a base variable.
MATLAB does not have built-in spider plot, AFAIK. The nearest built-in is polarhistogram(). https://www.mathworks.com/help/matl...

18 dagen ago | 0

Answered
Plot of 4 variables with dates(years)
You should read the documentation of plot(): https://www.mathworks.com/help/matlab/ref/plot.html All you need is to define c...

20 dagen ago | 0

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Question


Loading timeseries data into the deep network designer
I have read and learnt how to train a deep network for forecasting future values of a timeseries here: https://www.mathworks.c...

23 dagen ago | 0 answers | 0

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answers

Answered
Using for loop to extract data from a matrix
The break statement terminates the for loop: if j > numel(cavity) break end

27 dagen ago | 0

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Answered
PSO algorithm pv system code
You should formulate your problem based on the scientific literature. MATLAB has built-in PSO, but it only handles unconstrained...

27 dagen ago | 0

Answered
Calculate trends with regression for columns in MATLAB
You can use parfor (parallel for loop) instead of for. The more CPU cores you have, the more speed you gain. https://www.mathw...

28 dagen ago | 0

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Answered
Creating a function with varying numbers of input parameters
You should use Variable-length input argument list using varargin(). https://www.mathworks.com/help/matlab/ref/varargin.html

ongeveer een maand ago | 1

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Answered
Why SimEvents spends so much time
You should run 1000 simulations using sim() in conjunction with SimulationInput objects. With SimulationInput you can define the...

ongeveer een maand ago | 0

Answered
link a custom creation function
1) "If you have a partial initial population, meaning fewer than PopulationSize rows, then the genetic algorithm calls CreationF...

ongeveer een maand ago | 0

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Answered
What information is conveyed by the different colors in Matlab's contourf( ) data plots?
You can turn on the ShowText property of the contour, or add the color bar: x = linspace (-5, 5, 51); y = linspace (-5, 5, 51...

ongeveer een maand ago | 0

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Answered
MATLAB function block error in Simulink
Unlike m-file functions, MATLAB function block does not apply automatic array expansion. The simplest way to overcome is to defi...

ongeveer een maand ago | 0

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Answered
Run a Simulink modell stepwise inside Matlab
You can use MATLAB function block. It is executed on every timestep just like other blocks, and you can return outputs for every...

ongeveer een maand ago | 0

Answered
Create 9x9 matrix with RANDI between [0,2] with each 0,1, and 2 repeating three times each per column.
You can first create a vector with the values you need: Reference = repelem (0:2,3)'; Then you initialize the 9x9 matrix with...

ongeveer een maand ago | 1

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Answered
How can I display the last value obtained in a scope block graph in Simulink?
The Display block shows the numeric output. https://www.mathworks.com/help/simulink/slref/display.html

ongeveer een maand ago | 0

Answered
Can I use my own timetraces in M/M/1 queue implementation by Simevents?
I think you need a simple M/M/c queue. The example you are trying has components for other purposes, which might have confused y...

ongeveer een maand ago | 0

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Answered
What am I doing wrong?
For drawing multiple line plots at once, you should have one column vector for each line. You just need to have x as a column ve...

ongeveer een maand ago | 2

Answered
How to use the Parallel Computing Toolbox of MATLAB to optimize the parameters of a Simulink model with genetic algorithm?
You should set ga() to pass all of the generation members at once using UseVectorized option. Then you set the objective functio...

ongeveer een maand ago | 0

Answered
How to solve this problem? Error using == Quadratic constraints not supported
QP = Quadradic Programming = Quadradic objective function and linear constraints. QCQP = Quadratically Constrained Quadratic P...

ongeveer een maand ago | 2

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Answered
Small Value bars are missing in bar graph.
You can add a constant to the bars with small values. For example: X (X<4) = X (X<4) + 0.2;

ongeveer een maand ago | 0

Question


parsim() with fast restart returns different results
I am running multiple simulations using parsim() with fast restart to accelerate execution. However, I have noticed that using p...

ongeveer 2 maanden ago | 1 answer | 0

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answer

Answered
How do you use the NaN function?
You first create the NaN vector using nan(), then fill in the elements. V = nan (500,1); V (124:end) = Data;

ongeveer 2 maanden ago | 0

Answered
How to plot one point in one axis
You should turn off the visibility of the vertical axis. For example: scatter (1,1); ax = gca; ax.YAxis.Visible = 'off'; xl...

ongeveer 2 maanden ago | 0

| accepted

Question


How to assign array values to object.object.property at once using deal?
I know that it is possible to assign the values of an array to object.property using deal(). Is it possible to do such thing for...

ongeveer 2 maanden ago | 1 answer | 0

1

answer

Answered
How to import excel file only one sheet and skip first column?
You should use readmatrix(). For example: M = readmatrix (filename, 'Sheet', 'MySheet', 'Range','B2:Z10'); Readmatrix documen...

ongeveer 2 maanden ago | 0

Answered
How to make a burst entity generation based on a event
You should use MATLAB Discrete-Event System block instead of an event-based Entity Generator.

ongeveer 2 maanden ago | 0

Answered
Do Simevents Entity Servers release entities in a FIFO manner?
Generally, the server starts to serve an entity as soon as the entity enters the block. The server tries to forward the entity a...

ongeveer 2 maanden ago | 0

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Answered
scaling and change the ylim for subplot
You should set ylim() for each axes separately. For example: x = linspace (0, 6, 51)'; y1 = sin (x); y2 = cos (x); yyaxis...

ongeveer 2 maanden ago | 0

| accepted

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