Respondida
How can I scale and plot the graph according to the formula I use?
@Zaref Li you need to take the differential for noise term while solving the equation i.e. dW instead of W % Define paramete...

más de 1 año hace | 0

Respondida
Plotting the attenuation constant against frequency
@Vinci Use smaller conductnce value, and semilogx for ploting graph % Clear screen and variables clc, clear all % Define d...

más de 1 año hace | 0

Respondida
Why are the results of the iterative calculations different？
%%%%%%%%%%%%%%% clear clc T=1e-3; t=0:T:1; u=sin(2*pi*50*t); hold on for k = 1: numel(u) y(k)=fcn(u(k)); end plo...

más de 1 año hace | 0

| aceptada

Respondida
How to plot level curves
@Irene Zhou there is a missing element wise product operator for the equation in your code. [X,Y] = meshgrid(linspace(700,900,...

más de 1 año hace | 0

Respondida
readtable struggling to interpret spreadsheet as numbers
seriesAL = rows2vars(readtable('Alberta.csv', ReadRowNames=1, MissingRule="omitrow",VariableNamingRule='preserve')) yy = strrep...

más de 1 año hace | 0

Respondida
Hi, I am having some trouble with a plot. I am trying to plot pressure vs. time using an equation for pressure with respect to time. Whenever I plot this I get a blank graph, so i'm not sure what the problem is. I appreciate any help!
@Sarah Fries Try using the vpasolve function and solve the equation for well defined input time interval. In your code, you we...

más de 1 año hace | 1

Respondida
I didn't understand it how they completed it?
@Mohit Define the symbolic variables d & theta for the given equation to be solved % syms d theta x = [d theta]; % defin...

más de 1 año hace | 0

Respondida
Workspace variable not available despite visibility in another variable
if you want to store the variable names Testsignal_1 and Current then you need to use an indexing variable as below. If this c...

más de 1 año hace | 0

| aceptada

Respondida
Adding Legend to Subplot
@Ollie Bardsley, you need to rearrange the few lines of code inside the for loop as shown below LF = ["0 1.fig","0 2.fig","1...

más de 1 año hace | 0

| aceptada

Resuelto

Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

más de 1 año hace

Resuelto

Reverse Run-Length Encoder
Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

más de 1 año hace

Respondida
How can I write a 'for' loop that sums up all elements of a vector?
@Seif do you mean like this ? a= [1:5] for i=1:3 c(i)=sum(a(i)+a(i+1)) disp(sum(c)) end

más de 1 año hace | 0

| aceptada

Respondida
Legend colors change when I have two y axes
colors=["#028A0F","#1D57A9","#3DCBC8","#9C58A1","#F0D04D","#CD0027","#EF9F26","#B2B3B5","#FA9DAC","#98FF98","#67032F","#010101"]...

más de 1 año hace | 0

| aceptada

Respondida
How to make the negative sign of y axis to be up ?
ydata = -900:100:100 xdata = ydata.*ones(1,length(ydata)) plot(xdata,ydata) yticks = ydata; yticklabels(fliplr(yticks))

más de 1 año hace | 0

Resuelto

Acidity of vinegar and salts
Assuming: pH (potentia hydrogenii) = - log10(H+ ionic concentration in mol/Liter). For a buffer solution containing acetic acid ...

más de 1 año hace

Resuelto

Volume of this donut
Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.

más de 1 año hace

Resuelto

Size of this cup?
The given vector has diameter of the cup in mm sampled at micrometer increments in depth from top to bottom, need output in cc a...

más de 1 año hace

Resuelto

Finding perimeter of a rectangle
A rectangle has a length of x centimeters and a width of w centimeters. Find the perimeter.

más de 1 año hace

Resuelto

area of an annulus
Given the diameter d of the inner circle of the annulus. Given length z of a chord of the outer circle of the annulus. This chor...

más de 1 año hace

Resuelto

expand intervals vol.2
Similar to problem <http://www.mathworks.co.uk/matlabcentral/cody/problems/2528 2528>. This is a more general case, when bounds ...

más de 1 año hace

Resuelto

Time Expansion
How can you slow down any discrete-time signal? Example Input original signal x. x = [1 2 3 -1 -2 -5 -4] We want t...

más de 1 año hace

Respondida
Incorrect dimensions for matrix multiplication
k = @(t,u) (k0 + (p*k0.^u-q*k0).*t +(p*k0.^u-q*k0).*(p*u*k0.^u-q).*t.^2/factorial(2)... +(p*k0.^u-q*k0).*((p*u.*k0.^u-q)....

más de 1 año hace | 0

| aceptada

Respondida
how to get variable of function in for loop
x = 1:20; y = 1:13; f = []; for i = 1:length(x), for j = 1:length(y); f(i,j) = x(i).^2 - x(i) -2*y(j).^2 + y(j) -2...

más de 1 año hace | 0

Resuelto

Convert Kilometers to Miles
Convert kilometers to miles. Consider 1 km = 0.62 mile. Note: Don't use the '*' operator.

más de 1 año hace

Resuelto

Create an anti-identity matrix
Create an anti-identity matrix of given dimension. Examples n = 2 A = [0 1; 1 0] n = 3 A = [0 0 1; 0 1 0; 1 0 0...

más de 1 año hace

Resuelto

Sort the vector with the given index
Given x = [1 2 4 8 17] and t = [1 3 2 5 4] then y = [1 4 2 17 8].

más de 1 año hace

Resuelto

middleAsColumn: Return all but first and last element as a column vector
Given input A, return all but the first and last elements, arranged as a column vector. (I.e., all dimensions after the first s...

más de 1 año hace

Resuelto

What number has this problem?
This problem is added because it is problem number *???* in the "Community" problems section. <http://www.mathworks.de/matlab...

más de 1 año hace

Resuelto

Back to basics 9 - Indexed References
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

más de 1 año hace

Resuelto

Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

más de 1 año hace