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Umar


Last seen: 4일 전 2024년부터 활동

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Community volunteer, like to help people by making difference in their lives

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rotor side and control of DFIG based wind energy conversion system
Hi @Fatima zohra, Thankyou for posting your question on MATLAB Central. I appreciate your interest in improving the control p...

4일 전 | 0

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comm.SDRuReceiver on X310 throws receiveData:ErrLateCommand
Hi @Hepzibah, Thanks for raising this. I looked into the ErrLateCommand error you are seeing with comm.SDRuReceiver on the X3...

8일 전 | 0

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Why does fitlm give different results according to if I remove or I don't remove NaNs in the variables arrays?
Hi @Manuela, I wrote a MATLAB script (fitlm_nan_analysis.m) that walks through your exact dataset and explains why you're get...

10일 전 | 1

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Error converting python DataFrame to Table
Hi @David, Thanks for writing in — you've actually already diagnosed this correctly, so let me just confirm it and get you mo...

15일 전 | 1

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Integrating MMC in IEEE 9 bus system
Hi @Mojtaba, I had a look at both examples you mentioned and I think I can see exactly where you're getting stuck — so hopefu...

23일 전 | 0

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Airplance Guidance System in Simulink
Hi @Olga, Thank you for posting your question on MATLAB Central — great to see you working on a flight simulator! I'm happy t...

대략 1개월 전 | 0

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ParallelAssembly: Define the cell gap in x and y direction differently?
Hi @Fabian, Thanks for your question — I looked into this and wanted to share what I found. Unfortunately, the short answe...

대략 1개월 전 | 0

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Simple battery inverter model in Simscape Electrical
Hi @Mikel, Saw your post and figured I'd put together everything I found so you don't have to chase it down yourself. Firs...

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Find the stride of the longest skip sequence
We define a _skip sequence_ as a regularly-spaced list of integers such as might be generated by MATLAB's <http://www.mathworks....

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Sum the Infinite Series
Given that 0 < x and x < 2*pi where x is in radians, write a function [c,s] = infinite_series(x); that returns with the...

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Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....

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"Look and say" sequence
What's the next number in this sequence? * [0] * [1 0] * [1 1 1 0] * [3 1 1 0] * [1 3 2 1 1 0] This a variant on the w...

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Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Given a number _n_, return the terminal value of the number chain formed by summing the square of the digits. According to the P...

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Integer sequence - 2 : Kolakoski sequence
Get the n-th term of Kolakoski Sequence.

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Golomb's self-describing sequence (based on Euler 341)
The Golomb's self-describing sequence {G(n)} is the only nondecreasing sequence of natural numbers such that n appears exactly G...

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Projector Matrix
Write a function to determine whether or not the matrix is a projector. Projector matrices are defined as P^2 = P.

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Nilpotent matrix
Check if matrix A is <http://mathworks.com/ nilpotent>.

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Orthonormal matrix
You decide whether any given matrix is an orthonormal matrix or not. If each column in a matrix is perpendicular to the other...

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Is this matrix orthogonal?
Given a square matrix, a, determine whether it is orthogonal. INPUT: a, a n x n matrix OUTPUT: true or false

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Determine if input is a valid AHP evaluation matrix
Input is a matrix. Output is a true or false statement (1 or 0). Return true if input is a valid Analytic Hierarchy Process eval...

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Outer product of multiple vectors
In tensor algebra, it is often useful to define a tensor as a product of lower order tensors. Similarly, a multidimensional arra...

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Combined Ages 4 - Non-symmetric with multiples, n ≥ 3
This problem is slightly more difficult than <http://www.mathworks.com/matlabcentral/cody/problems/42383-combined-ages-3-non-sym...

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Combined Ages 3 - Non-symmetric, n ≥ 3
Pursuant to the previous two problems ( <http://www.mathworks.com/matlabcentral/cody/problems/42382-combined-ages-1-symmetric-n-...

대략 1개월 전

답변 있음
code improvement/optimization
Hi @Cesar, Good progress overall — moving to Radau IIA and SDIRK was the right call. Robertson is a stiff problem and implic...

대략 2개월 전 | 0

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matlab/simulink+tensorflow problem
Hi @Sato, This one's actually more of a MATLAB-Python environment issue than a TensorFlow problem, even though the error make...

대략 2개월 전 | 0

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Can System Composer read parameters directly from JSON or XML?
Hey @Erica, Great question — I've been down this rabbit hole before with System Composer, so hopefully I can save you some time...

대략 2개월 전 | 1

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Flexibility in Satellite Toolbox
Hi @Kevin, On the rectangular FOV front — you're right, it's not there. The toolbox only ships with ConicalSensor, which uses...

대략 2개월 전 | 0

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Great Circle Distance
Find shortest between two points on a ball given their azimuthal and polar angles (in degrees) as well as the radius of the sphe...

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Smallest distance between a point and a rectangle
Given two points *x* and *y* placed at opposite corners of a rectangle, find the minimal euclidean distance between another poin...

대략 2개월 전

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Clockwise or Counterclockwise
Given a list of 2-d points defining the vertices of a polygon, determine whether these points are sorted clockwise. The input...

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