Community Profile # Karim

Last seen: Today Active since 2016

Mechanical Engineer

Programming Languages:
MATLAB
Spoken Languages:
English
Professional Interests:
Optimization, Multibody Modeling, Finite Element Analysis (FEA)

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For Loops using functions
if you do not want te keep the data from each iteration you can simply overwrite it i.e. use the same variable as input and outp...

3 giorni ago | 0

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How to flot the function f(x,y)=(x^(2)+y^(2)) ℯ^(y^(2)-x^(2))
Hi, you can use the procedure below to investigate the range you are interested in. % create the function Fun = @(x,y) (x.^2+y...

3 giorni ago | 0

How do I add data from one table to another?
Hello, you can simply append the tables, see below for an example Var1 = ["A";"B";"C";"D";"E"]; Var2 = [1;2;3;4;5]; Var3 = lo...

4 giorni ago | 0

Write matlab code for the following algorithm
I'm not familiar with the algoritm, so it could still have some mistakes left... However, i was able to identify a couple of mi...

5 giorni ago | 0

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How set table column to modified data?
See below, you can first extract the column names from the table. And use these as index during the loop. loadfile = load(websa...

5 giorni ago | 0

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How to find X and Y coordinates of maximum gap between curves?
It depends on what you mean with the gap, notice that you plot it on a logarithmic axis. As a result from a graphical point of v...

6 giorni ago | 2

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i need the curve of this fourier series
see below for a demo on how to set this up % set up the x values x = linspace(-3*pi, 3*pi, 1e3); % assume 10 terms for the ...

7 giorni ago | 0

Match numbers to allocate text
you can use the categorical command to do this: y = [12 13 19 24 21 12 12]'; B = categorical( y, [12 13 19 21], ["A" "B" "C"...

8 giorni ago | 0

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How to build a 3d map from raw data?
If you want to plot the curves in 3D, you can use the plot3 command. See below for an example: % read the data opts = spreadsh...

8 giorni ago | 0

change the scale of colorbar
you can use the caxis command, simply add caxis( [0 0.02]) below the colorbar command. figure surf(rand(10,10)) c = colorbar;...

8 giorni ago | 0

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What is the syntax for iterating over given coordinates, using a For loop?
You can do this in the following way: X1 = [10 12 14 23 24 23 18 16 12 10]; Y1 = [20 20 18 15 8 7 8 6 12 20]; for i = 1:num...

14 giorni ago | 0

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How to convert strings in a table to numbers?
An easy method would be to use the third output of the unique command. This will work directly on strings and will give the core...

14 giorni ago | 1

Extract value from every struct
You can acces the data in the struct by placing a point after the variable name of the struct, follewed by the fieldname you wan...

14 giorni ago | 0

text file to be in the folder
No need for the save command, first create the folder (or check that it exists) and then you can write the file directly into th...

circa un mese ago | 0

How to create a triangular shape using following Code in MATLAB
Based on the scatter mentioned in you question I combined the two loops and the resulting points in a single grid. This allows t...

circa un mese ago | 0

Running my code in a loop to make it more efficient
You can create a for loop, and just save the variables directly into matrices, see below for an example with 10 iterations and 7...

circa un mese ago | 0

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Count impulses into sequence of impulses and segments of sequences of impulses from signal
If the rectangles were drawn using matlab, then you know the start and stop time. Thus, if this works for the total number of p...

circa un mese ago | 0

Rewrite the format of a string
In the for loop, 'x' starts from 1, hence you will overwrite the data in iwant for each new file. One method to resolve this is...

circa un mese ago | 0

how to draw Bipartite Matrices and Projection Matrices.
such figures can be generated with the spy command. See below for an attempt to produce the top left figure using a bit of rando...

circa un mese ago | 0

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Array indices must be positive integers or logical values.
The following part of you code can produce an error: i starts at 1, hence you are trying to acces t(0) which is not possible. In...

circa un mese ago | 1

Average of multiple matrices
This depends how your images are stored in memory, if they are stored in a 3D array you can use the mean function % generate 3...

circa un mese ago | 0

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Vector question help?
% this step creates a vector with 25 normal distributed random values MyVector = randn( 1,25 ) % if you want to round these va...

circa un mese ago | 0

Plot an equation in time span T=[0,t]
You need to create a vector, below you can see a method using the "linspace" function. This creates a vector between 0 and t wit...

circa un mese ago | 0

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how to create random vector?
RandomDouble = rand(25,1) % i.e. pick 25 random values between 0 and 1 RandomIntegers = randi(1000,25,1) % i.e. pick 25 integer...

circa un mese ago | 0

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If else -statement doesn't work
The easiest method will be to first create a zero array, and then fill in the values according to the required logic: % intiali...

circa un mese ago | 1

calculate the volume obtained by rotating a function around the X-axis
Hello, since at first glance there are no internal voids you can use the convex hull function to determine the volume numericall...

circa un mese ago | 1

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To concatenate single column of a cell array
You can use cell2mat to do this, see below for an example % generate cell array with random data C = cell( 3072 , 2); C = cel...

circa un mese ago | 0

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How to use Matlab to solve equation like Mathcad
Use the symboic toolbox to determine the equations, see below. syms fp1 fp2 fz1 fz2 fc boost real eqn = boost == ( atan(fc/fz1...

circa un mese ago | 0

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Error in writing the output to excel file
As indicated in the error message you need to convert the sym into a double or a string, see below for both options syms m1 m2 ...

circa un mese ago | 0

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