# Sudharsana Iyengar

### Skill-Lync

Researcher/Tutor/Team Lead

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Solved

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...

8 months 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...

12 months ago

Solved

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;...

1 year ago

Solved

Square root

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

1 year ago

Solved

Calculate the average value of the elements in the array

Calculate the average value of the elements in the array

1 year ago

Solved

the average value of the elements

Calculate the average value of the elements in the array

1 year ago

Solved

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:...

1 year ago

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...

1 year ago | 0

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....

1 year ago | 0

| accepted

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);% ...

1 year ago | 0

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...

1 year ago | 0

| accepted

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. ...

1 year ago | 0

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=[...

1 year ago | 0

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...

1 year ago | 0

| accepted

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 ...

1 year ago | 0

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...

1 year ago | 0

| accepted

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...

1 year ago | 0

Beginner Question 5x5 Matrix

@Kutay Furkan AKALIN consider accepting answer so that it is closed. @Steven Lord that is an amazing discovery.

1 year ago | 0

load dat file in matlab

You can try readtable T=readtable('somefile.dat')

1 year ago | 0

| accepted

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

1 year ago | 0

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',{})

1 year ago | 1

| accepted

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...

1 year ago | 1

| accepted

How to turn off X axis while keeping the X axis grid lines?

grid on set(gca,'Xtick',[],'Ytick',[])

1 year ago | 0

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',[...

1 year ago | 0