Community Profile # Dyuman Joshi

Last seen: Today Active since 2012

Mechanical Engineer IITG'20 Time zone - GMT +5.30 (IST)

Programming Languages:
MATLAB
Spoken Languages:
English
Professional Interests:
Fluid Dynamics, Aerospace Engineering, Aerodynamics, Computational Fluid Dynamics (CFD)

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Count repeated numbers from a data column and produce new columns
Code edited to include output3 added by OP. @Georgios Tsiledakis, Use repelem() rather than looping over the data (especially w...

1 day ago | 1

Have one array follow another array with a threshhold
Use the same approach for A1 as well. A1 = [1 4 5 8 2 2 4]; A2 = [2 5 8 15 18 24 23]; A2Thresh = A2 < 10 | A2 > 30; A2(A2Thr...

1 day ago | 0

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"for" cycle to plot the point in a matrix with a certain radius
You should use tolerance to compare floating point numbers. Set tolerance according to the level of precision you want. And use...

1 day ago | 0

When integrating numerically with integral2, the integral function contains a sign variable, causing the integral to keep reporting an error.
You don't need to use symbolic variables for this code. Define A as a function handle and use r values as an input to define the...

1 day ago | 0

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Getting an error "Error using erfc... Input must be real and full"
The function erfc only supports real inputs (as evident by the error) and the input to erfc here is complex. You can either use...

2 days ago | 0

Newton-Raphson algorithm stuck running after 4 or 5 iterations
Converting to numeric data type is much faster than using symbolic values syms x real %I have defined f to be an explicit func...

2 days ago | 0

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plot legend that depicts different markes of nodes
The problem here is that legend will only provide labels for what graphics recognizes as individual objects. So in a line plot, ...

3 days ago | 0

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Find minimum among matrices with different sizes
Your statements contradict each other, but I guess this is what you want to obtain A=[2 8 4; 7 3 9]; B=[1 3 5]; C=min(A,B)

4 days ago | 0

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i want to solve a set of homogeneous linear equation
Note - Symbolic Toolbox required Note that you might not get a solution for x depending upon the values of A. One such exampl...

4 days ago | 0

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i don't know code
Define f and g as function handles, and use x and the output of g(x) as inputs respectively - %Using different variable name to...

5 days ago | 1

How to build a function fun that takes as input the matrix A and as output provides the matrix B which is produced out of A in the following ways.
A much simpler way - a=[1 2 3 4;5 6 7 8;9 10 11 12; 13 14 15 16] s=size(a)/2; b=circshift(a,s)

6 days ago | 3

6 days ago | 1

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The numbers do not appear in standard format despite the writing (format shortG)
Using format is only applicable to numeric outputs. Change the formatting operator in fprintf to obtain the proper value - for...

6 days ago | 0

How to save index of Values of an item in a matrix?
x=[0,0,0,1,0,0,0,0,1,0,1]; y=find(x>0)

8 days ago | 0

symbolic trigonometrical function tan instead of log and imaginary equation
syms a b x real sol1=solve(a*sin(x) == b*cos(x),x,'Real',true) The solution obtained above can be derived by changing sin and ...

9 days ago | 1

How to obtain vector of specific values in MATLAB
It's not a good idea to dynamically define variables. Read - Why Variables Should Not Be Named Dynamically You can make a 96x16...

9 days ago | 0

How to take an average from range of values?
It seems you have copied the data from Excel and there is a loss of data in doing that. A= [0.0000 0.4341 -0.0000 -0.5910 -0.03...

9 days ago | 0

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How to prepare normalized feature matrix in MATLAB ?
%Random data D = rand(500,4); %minimum of each row minval=min(D,[],2); %maximum of each row maxval=max(D,[],2); %Vecto...

9 days ago | 0

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How to create multiple structure variables and assign values to them at one line.
%Assign any type of data to a field [AC.a, AC.b, AC.c, AC.d] = deal(5, 15, {'cell'}, '0'); AC

9 days ago | 0

Grouping values in a matrix according to a value in a row & its index position
Vectorized approach mat=[51 71 0 48.87 63.38 -2.30769230769231 42.15 55.97 -2.30769230769231 40.22...

10 days ago | 1

Find min value of each column of 2D lattice and plot
It is better to define variables not varying with the loop index, out of the loop. Moreso, as you are using figure(). It's not ...

10 days ago | 0

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How to get the rows and columns from a matrix which do not fall into particular criteria?
Use negation on the logical indexing - x = 0:0.01:10; y = [sin(x); cos(x)]; %Get columns of y in which %first row is less th...

10 days ago | 0

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Need help with matlab code for below mentioned integrals
Note that you need symbolic toolbox to run this code - syms a b x y tau %Defining functions r(a,b) = exp(-a-b); f(a,x) = exp...

11 days ago | 1

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Can't run my 'if, elseif, else' code
if-else is not a loop, they are conditional statements. If you want to print/display something, use sprintf or fprintf or disp....

11 days ago | 1

How to change diagonal, subdiagonal and superdiagonal values with respect time while using loop and conditional statement?
xmax=1; ymax=7; m=20; n=29; tmax=100; nt=500; dx=xmax/m; dy=ymax/n; dt=tmax/nt; UOLD=zeros(m,n);VOLD=zeros(m,n); A=zeros(m,...

11 days ago | 0

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Why do I receive "Not enough input arguments"? or How can I better code this ODE?
I'm not sure why you receive that error, but your code works properly with some tweaks. There is no need to use global here. I...

11 days ago | 1

Error using cross and not calculating correctly
You are using character scalars instead of using variables. The result you get are corresponding to the ascii values of the char...

11 days ago | 0

How do I plot separate graphs in a for loop?
To iterate over the values of a column vector, you need to transpose it to create a row vector and then proceed. Otherwise, the...

11 days ago | 1