Karim

Last seen: 3日前 | 2016 以来アクティブ

Mechanical Engineer

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

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Oldest person in the room code not working
Hello, the issue is that the variable "name" is a char array in your case, hence it returns a char. It will be easier to store ...

3日前 | 1

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How to extract one data from various mat files to one txt file
assuming you want to append the data to the same text file, you can generate the name of the file in a loop: numFiles = 10; fo...

3日前 | 1

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Plot 3D Animation
not sure witouth some example data, could you share for instance the struct holding the time history of the solution? As a tip,...

3日前 | 1

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Create a 1D row vector (5,1) with middle elements = T.
I guess this was only a typographical error, where you inserted the variable 'T' into 'temperature', see below for the adjusted ...

3日前 | 0

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Contour plot over a specified region
Using the patch command u can plot as many triangular or rectangular shapes at the same time. Just build the grid (i.e. the 've...

3日前 | 0

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Matrix caculation about NAN and IFN
you can use indexing to avoid deviding by zero: A = [1 0 0; 1 1 0; 3 4 2; 2 3 1]; B = [1 0 2;1 0 14; 0 1 11; 1 1 10]; C = ze...

4日前 | 0

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set values after certain value is exceeded to 0
One approach is to first look for the treshold value, build a logical array using that values and then use it together with an a...

4日前 | 0

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how to plot deformation with value from ansys to matlab
you can use the patch command, see the method below coordinates = readmatrix("coordinates.csv"); displacements = readmatrix(...

7日前 | 1

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Sort according to specific string contained in file name
You can try spliting the lists, then ordering them and then using the indixes to sort the original list: ListA = ["010822_AB030...

7日前 | 0

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Extract certain numbers from a text file.
see below for one method to do this % read the file MyData = readmatrix('example_txt_file.txt'); % specify frequency valu...

7日前 | 0

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How to seprate elements based on value counts In MATLAB
If i understand it correctly, you want to keep only the unique values from each cell and find the overal "count" of each value? ...

8日前 | 0

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Truble codeing a diamond lattice
You need the additional subroutines. In this case "diamondLattice.m" and all other routines accompined by it... After a quick b...

8日前 | 0

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Making a 3D plot and rotating it
@Sam Chak as requested a seperate answer to show the "patch" approach As mentioned in the comments, there remains a part to com...

8日前 | 1

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How can I name the x-axis elements on a plot?
Here you go, you can overwrite the ticks with a string: % data M = [1 2 3 4 5 6 7 8 9 10 11 12]; Months = ["Jan","Feb","Mar",...

8日前 | 1

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How to find the time between two spikes?
hello, you can use the "findpeaks" routine do achieve this, see below for the code best regards % first run the main code M...

8日前 | 0

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Making a 3D plot and rotating it
To create a figure like the tower of hanoi, you can try something like the code below. Have fun :) edit: added the rotation a...

9日前 | 1

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How to plot graph between "W" and "r" for multiple values of "psi" on the same figure?
the easiest would be to "hold" the plot and loop over the values, see below % plotting graphs syms r psi_list = [0.1, 0.01, 0...

9日前 | 0

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how to delete all row contain a 1's and how to delete a column contain 1's. Q=[3 1 1 0 0 1;1 3 1 0 1 0;1 1 3 1 0 0;0 0 1 3 1 1;0 1 0 1 3 1;1 0 0 1 1 3]
you can use some logic to find them: % using example data Q = [3 1 1 0 0 1;1 3 1 0 1 0;1 1 3 1 0 0;0 0 1 3 1 1;0 1 0 1 3 1;1...

9日前 | 0

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Is there a way to write values where the last digits of the value are the ones that separate them, but only use 6 digits, plus the exponent?
the only way I can think of that matlab can deal with such big numbers and precision is by treating them as strings ( perhaps it...

9日前 | 0

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To minimize the charging cost of electric vehicles
Which error do you obtain? I changed if j<=EVSE1_arr_time & j<=EVSE1_leave_time into if all(j<=EVSE1_arr_time) && all(j<=E...

9日前 | 0

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How to store value in the table using looping
hello, below you can find an example on how to store data in a table in a loop numLoop = 10; % indicate the number of loops.....

9日前 | 0

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how to resize a matrix two pair of two numbers stacked together?
you can do this with the reshape command: a = (1:16)' b = reshape(a, 4, [] )

9日前 | 0

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Removal of empty cells in an array
this was due to the indexing, you were putting the temporary data into "nn{n1,n} = F1{n1}", thus at the second run of "n" a new ...

9日前 | 0

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how to plot a plane using equations of planes?
does this result in what you need? Edit: update to plot a plane at each point and plot the normal using quiver XYZ = [ 126.604...

9日前 | 0

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how to do the matrix value comparison of two different iterations ?
yes, you can do this like you say by saving the best result and updating it at each iteration i tried to update the pseudo code...

9日前 | 0

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Index of matrix using colon
you need to save the index value into a new array, otherwise it will overwrite the value and only keep the last one mainmatrixX...

10日前 | 0

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I want put test 3 sigma on time series by 800*1 dimension. I have this code, it return nothing.
the error is because you intialize lat = fid(:,2); this means that 'lat' will be a vector with 1 column next you ask for l...

10日前 | 0

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How can I transfer the results of a four-cycle iteration into a matrix with a row for each iteration?
hello, if you want to use the for loop you need to index the rows A=[0.246 0.280 0.286 0.301 0.302 0.330 0.397 0.478 0.607 0.65...

10日前 | 1

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Indexing a cell using a table
i gues you need to translate the logical matrix B into indexes, e.g. using find % create A A = {[1;2;3] [4;5;6] [7;8;9] ; [10;...

10日前 | 0

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How can I control the amount of same random letters back to back? (N-back)
Quite an interesting problem, I'm not familiar with a n-back experiment. But I guess one of the issues could be that your 'integ...

10日前 | 0

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