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Feeds
How to get the the arrow length as legend in quiver function ?????
I had the same problem. I finally used the following workaround: 'hold on' the figure and use the 'quiver' command again in orde...
más de 8 años hace | 3
| aceptada
Resuelto
Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...
casi 10 años hace
How to speed up a for loop ?
If A have 3 rows and n columns, try that: angle=asin(A(3,:))./(sqrt(A(3,:).^2+A(2,:).^2+A(1,:).^2));
casi 10 años hace | 0
Hello, I have been trying to surf two parallel circles but data dimensions don't match and I don't know why. Any help would be nice. Thank you, Omar
Furthermore, surf is not the right command to do what you want. Try the following instead: fill3(X(1,:),Y(1,:),Z(1,:),'r') ...
casi 10 años hace | 0
| aceptada
Hello, I have been trying to surf two parallel circles but data dimensions don't match and I don't know why. Any help would be nice. Thank you, Omar
Erase Z=[Z;Z]; This is not needed because X already have 2 rows and size(X)=[2 100]
casi 10 años hace | 0
Solving Poisson type of equation, increasing tolerance requirement leads to no response
The solution does not converge. It does not converge even with the 10-5 tolerance. You should print the max variable at each ste...
casi 10 años hace | 0
transform matrices into a single matrix?
Make a 3D matrix. If your 6x6 matrices are in the variables A1,A2,...,A20, then: A=zeros(6,6,20); A(:,:,1)=A1; A(:,:,...
casi 10 años hace | 0
How do I store output from double for loops, I only get the last iteration?
flygplatsmetar = cell(1,length(Data)); %initialize your 1D cell array for l = 1:length(Data) ... flygplatsmetar...
casi 10 años hace | 0
How to assign two values randomly among 2 variables?
r=rand; %random number between 0 and 1 if r<0.5 sensor1 = c1; sensor2 = c2; else sensor1 = c2; ...
casi 10 años hace | 0
Resuelto
radius of a spherical planet
you just measured its surface area, that is the input.
casi 10 años hace
Problema
Maximum of ND-array
Find the maximum element of a N dimensional array. Example: A=[1 2 4 ; -20 4 10]; The maximum is 10.
casi 10 años hace | 2 | 75 solvers
How to colour some node in a graph
Take a look here <https://www.mathworks.com/help/matlab/ref/plot.html?searchHighlight=plot#inputarg_LineSpec> You can give als...
casi 10 años hace | 0
How to remove a pattern in a table column
strfind function is what you need ( <https://www.mathworks.com/help/matlab/ref/strfind.html> ). I suppose that you have a cell a...
casi 10 años hace | 0
Resuelto
Convert a vector to a lower triangular matrix
I now have a row vector and I want to convert it to a lower trilangular matrix. The rows of the lower trilangular matrix have...
casi 10 años hace
Resuelto
Simple polynomial evaluation
Compute the value of a polynomial of degree n with all coefficients '1', at value x. n is always n>=0. p(x)=1+x+x^2+...+x^n...
casi 10 años hace
Problema
Sum of digits of 2^n number
Given n, find the *cumulative* sum of the digits of the number 2^n (where n>=0). Example: Input n = 7 Output sum = 2 ...
casi 10 años hace | 0 | 36 solvers
Resuelto
Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...
casi 10 años hace
Resuelto
Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...
casi 10 años hace
Resuelto
Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...
casi 10 años hace
Resuelto
Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.
casi 10 años hace
Resuelto
Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]
casi 10 años hace
Resuelto
Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.
casi 10 años hace
Error calculation and using for loop
# You need to put your code inside a function, in order x and n to be parameters. # You can estimate the true value by just us...
casi 10 años hace | 0
trying with bisection method to create a function that finds the root of an equation, approximated error, and numbers of iteration
A first problem in your code is that the returned variable "root" does not always take a value. A second one is the "i= i+1;". i...
casi 10 años hace | 0
| aceptada
Resuelto
Numbers with prime factors 2, 3 and 5.
Make a function which takes one positive integer n and returns a matrix with the numbers of the form (2^i)*(3^j)*(5^k) which are...
más de 14 años hace
Problema
Numbers with prime factors 2, 3 and 5.
Make a function which takes one positive integer n and returns a matrix with the numbers of the form (2^i)*(3^j)*(5^k) which are...
más de 14 años hace | 4 | 683 solvers
Resuelto
First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];
más de 14 años hace
Resuelto
Cannon Ball
Given g (acceleration due to gravity) and desired altitude x, find the minimum ground velocity of a cannon ball to reach x.
más de 14 años hace
Resuelto
Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];
más de 14 años hace
