# Sudharsana Iyengar

### MSRUAS

Last seen: 6 months ago Active since 2013

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Faculty: Asst Prof

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Matrix Quadrants
Write a function that takes N as the input, and outputs a matrix whose upper-left (NxN) quadrant contains all ones, the lower-ri...

2 years ago

Solved

Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

2 years ago

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Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

2 years ago

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Converts numbers into characters
Converts numbers into characters

2 years ago

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Find the max element of the array
Find the max element of the array

2 years ago

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Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

2 years ago

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Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

2 years ago

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to the 2 all elements
to the 2 all elements

2 years ago

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the average value of the elements
Calculate the average value of the elements in the array

2 years ago

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Double all elements in the array
Duplicate all elements in the array

2 years ago

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calculate the length of matrix
input 1 array, calculate the length

2 years ago

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Draw a '0' in a one matrix!

2 years ago

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

2 years ago

Answered
How to solve for dI/dz differential equation using runge kutta 4th order method?
use ode45 create a function of your diffrential equations and use ODE 45. This is an example, do a similar for yours. funct...

2 years ago | 0

Answered
question about result in matlab
Try this syms A B C D E F eqn1= A - 0.25*E == 6.25; eqn2=B-0.25*F-0.25*D == 4.45; eqn3=C-0.25*E == 6.8; eqn4=D-0.25*B==5....

2 years ago | 0

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Answered
Error: Index exceeds array bounds.
Can you check the Size of W. and see what W(1) contains. mod_MulInverse(i)=Column1(i); %working mod_MulInverse(i)=W(1);% ...

2 years ago | 0

Answered
function call and getting array error
U_s_x is a 4x9x9 matrix but U_px is 1x2 matrix. So there is no U_px(3,4) did you check on that. U_s_x(i,j,k)=U_p...

3 years ago | 0

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Answered
Arrays have incompatible sizes for this operation.
Hi in your program you have A which is size 100 and B that is size 400. Thats is why this issue. Change your program to this. ...

3 years ago | 0

Answered
how to arrange vector to matrix?
You can try using the functions perms. or if you want cyclic permutations x=[1,2,3,4,5,6]; v=perms(x) X=[1,2,3,4,5,6]; V=[...

3 years ago | 0

Answered
2D wave direction Plot with Arrow
You can use the in built quiver function which is in Matlab. For instance when you want to plot the wind direction in a given re...

3 years ago | 0

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Answered
Moving x and y of a picture and transfr color
Do you want to perform a PCA in 3D. You can use hyperpca command in Image Processing tool box. It is not clear to me what you ...

3 years ago | 0

Answered
Please explain the following code for me !!!
You have generated code using generate code in the file menu of your figure. So next time when you want to make a figure of th...

3 years ago | 0

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Answered
How to use imageDatastore function to train model on .mat file dataset?
General Tutorial: https://in.mathworks.com/matlabcentral/fileexchange/99779-neural-network-and-knn-algorithm-tutorial-with-matl...

3 years ago | 0

Answered
Beginner Question 5x5 Matrix
@Kutay Furkan AKALIN consider accepting answer so that it is closed. @Steven Lord that is an amazing discovery.

3 years ago | 0

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load dat file in matlab
You can try readtable T=readtable('somefile.dat')

3 years ago | 0

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Answered
Interleaved repmat (row duplication)
Try this A=[1,0,0; 0 0 1; 1 1 1;]; k=1; for i =1:3 T(k:k+1,:)=repmat(A(i,:),2,1); k=k+2; end T

3 years ago | 0

Answered
How to turn off X axis while keeping the X axis grid lines?
Hi Please try this and see if this is what you wanted. grid on set(gca,'Xticklabel',{})

3 years ago | 1

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Answered
grouping values that as need
An example: x=linspace(1,60,60); k=1; for i =1:6:length(x) B(k,1:6)=x(i:i+5) %; add this semicolon if you dont want this t...

3 years ago | 1

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Answered
How to turn off X axis while keeping the X axis grid lines?
grid on set(gca,'Xtick',[],'Ytick',[])

3 years ago | 0

Answered
Draw the graph by calling the script
Ok let me give you a simple script that will do this work for you. function drawscript(x,y) plot(x,y) set(gca,'TickLength',[...

3 years ago | 0