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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...
plus de 7 ans il y a | 3
| A accepté
A résolu
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...
environ 9 ans il y a
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));
environ 9 ans il y a | 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') ...
environ 9 ans il y a | 0
| A accepté
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]
environ 9 ans il y a | 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...
environ 9 ans il y a | 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(:,:,...
environ 9 ans il y a | 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...
environ 9 ans il y a | 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; ...
environ 9 ans il y a | 0
A résolu
radius of a spherical planet
you just measured its surface area, that is the input.
environ 9 ans il y a
Problème
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.
environ 9 ans il y a | 2 | 69 solveurs
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...
environ 9 ans il y a | 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...
environ 9 ans il y a | 0
A résolu
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...
environ 9 ans il y a
A résolu
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...
environ 9 ans il y a
Problème
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 ...
environ 9 ans il y a | 0 | 31 solveurs
A résolu
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 ...
environ 9 ans il y a
A résolu
Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...
environ 9 ans il y a
A résolu
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...
environ 9 ans il y a
A résolu
Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.
environ 9 ans il y a
A résolu
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]
environ 9 ans il y a
A résolu
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.
environ 9 ans il y a
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...
environ 9 ans il y a | 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...
environ 9 ans il y a | 0
| A accepté
A résolu
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...
plus de 13 ans il y a
Problème
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...
plus de 13 ans il y a | 4 | 586 solveurs
A résolu
First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];
plus de 13 ans il y a
A résolu
Cannon Ball
Given g (acceleration due to gravity) and desired altitude x, find the minimum ground velocity of a cannon ball to reach x.
plus de 13 ans il y a
A résolu
Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];
plus de 13 ans il y a
