Respondida
Day_diff calculate the difference in days between two peoples birthdays in 2015?
_"... Make sure to check that the input values are of the correct types and they represent valid dates ..."_ Based on the wor...

alrededor de 8 años hace | 0

| aceptada

Respondida
I would like to use forloop for Matrix rearrange..
Either this: x = your 1x500 variable result = reshape(x,100,5).'; or result = reshape(x,5,100); Depending on ...

alrededor de 8 años hace | 0

| aceptada

Respondida
Solving an Equation 5th degree
5th order polynomials cannot be solved symbolically in general. E.g., see this: <https://en.wikipedia.org/wiki/Algebraic_solu...

alrededor de 8 años hace | 0

Respondida
Wrong result in elipse equation
See this: <https://www.mathworks.com/matlabcentral/answers/57444-faq-why-is-0-3-0-2-0-1-not-equal-to-zero>

alrededor de 8 años hace | 0

| aceptada

Respondida
Is there a library for tracking the moon?
You could try these FEX submissions to get moon position: <https://www.mathworks.com/matlabcentral/fileexchange/56041-moon-po...

alrededor de 8 años hace | 0

Respondida
Subscript assignment dimension mismatch when calling function
Type the following at the MATLAB prompt dbstop if error Then run your code. When the error occurs, the code will pause a...

alrededor de 8 años hace | 1

| aceptada

Respondida
Multiple results for iteratively multiplying a matrix with a vector quickly
Note that as the power value gets higher, the numerical stability of successive matrix multiplies will degrade and you will not ...

alrededor de 8 años hace | 0

Respondida
Finding x such that 1 is eigenvalue
>> syms x >> det([1 2 3;3 x 4; 1 2 5]-eye(3)) ans = 5 - 3*x >> solve(ans) ans = 5/3 >> A = [1 2 3;3 5/3...

alrededor de 8 años hace | 0

Respondida
Missing symbol 'mxArrayClassIDName' in 'D:\matlab/bin/win64\libmx.dll' error?
mxIsA and mxArrayClassIDName used to be part of the C API library interface (they appeared as undecorated names). In R2014a thes...

alrededor de 8 años hace | 0

Respondida
In ODE solver how to use the time step of each iteration within the differential equation?
Based on your description, I would conclude that the deltat in the equation is simply the total amount of time that the mass flo...

alrededor de 8 años hace | 0

Respondida
Need help on assigning output arguments in C language
Defining functions inside of functions is an extension to the language. In your posted code, that means the functions compile OK...

alrededor de 8 años hace | 0

| aceptada

Respondida
How to plot 2nd order ode
Follow the 2nd Order van der Pol ODE example in the ode45 doc: <https://www.mathworks.com/help/matlab/ref/ode45.html?searchHi...

alrededor de 8 años hace | 0

Respondida
solving system of equations
1) Look at the examples here: <https://www.mathworks.com/help/matlab/ref/ode45.html?searchHighlight=ode45&s_tid=doc_srchtitle...

alrededor de 8 años hace | 0

| aceptada

Respondida
Matlab 2018a/Visual Studio 2017 linker failure, works in Matlab 2017b
One possible cause: If you compiled and ran the mex routine in R2017b, it could be that R2017b still has the stel.mexw64 file o...

alrededor de 8 años hace | 0

Respondida
How can i go from L1 to a low moon orbit?
E.g., the ODE solvers can use events: <https://www.mathworks.com/help/matlab/math/ode-event-location.html>

alrededor de 8 años hace | 0

Respondida
Creating C++ MEX Functions
Both VS Express and MinGW have C++ compilers. <https://www.mathworks.com/matlabcentral/fileexchange/52848-matlab-support-for-...

alrededor de 8 años hace | 0

Respondida
replace the 2nd and 3rd elements without the use of find
Hints: 1) Create a new variable to store a(b) <-- Assuming b is a logical vector here! 2) Use c to index into this variab...

alrededor de 8 años hace | 0

Respondida
What is wrong with my script?
Should this strcmp(alldata(k,3), 'SA{j}') be this strcmp(alldata(k,3), SA{j}) And should this strcmp(alldat...

alrededor de 8 años hace | 1

| aceptada

Respondida
Trying to do simple Monte Carlo simulation
Based on the wording of the assignment: To generate a normal distributed sample from the "5 +- .2 in": r = randn*(0.2/3)...

alrededor de 8 años hace | 1

| aceptada

Respondida
Matlab Calculates mod(2^1000,10^23) wrong
To expand on what Rik has posted ... IEEE double precision numbers only have about 16-17 equivalent decimal digits of precisi...

alrededor de 8 años hace | 0

Respondida
How to correct this error?"Subscripted assignment dimension mismatch."
ub(i,1) is a scalar element, but ones(n,1) is a vector if n>1. You can't assign a vector to a scalar element.

alrededor de 8 años hace | 0

| aceptada

Respondida
Direct cell {} indexing of class method output
Spot checking: Works in R2009a 32-bit and R2018a 64-bit, so I would presume it has always worked although I have not tested ever...

alrededor de 8 años hace | 1

| aceptada

Respondida
Access element of ND array specified by another array?
doc sub2ind

alrededor de 8 años hace | 0

Respondida
ODE45 for Second Order
Based on your description, I would have expected something more like this for the derivative: R = 2.5e-3; f = @(t,y) [y(...

alrededor de 8 años hace | 1

Respondida
XOR between two 3d arrays: array1>=250 xor array2>=170
You almost had the syntax correct. E.g., sum(xor(myarray1>=10.5,myarray2>=50),3)

alrededor de 8 años hace | 0

| aceptada

Respondida
Calculating all combinations of vector-element multiplication
I don't know how to avoid a loop of some sort for an arbitrary number of variables, even if it is hidden in the background. E.g....

alrededor de 8 años hace | 0

| aceptada

Respondida
making an array with element values equal to column position
result = repmat(1:N,M,1);

alrededor de 8 años hace | 0

Respondida
How to assign values in an identity matrix?
For this specific question, simple indexed assignment: I(1:2,end) = [2;4]; But what is your actual problem?

alrededor de 8 años hace | 0

| aceptada

Respondida
Precision in writing large numbers to file
See the 'precision' argument to dlmwrite.

alrededor de 8 años hace | 0

| aceptada

Respondida
dcm2quat is returning invalid quaternions
ACB is not a valid direction cosine matrix. You can see that its determinant is not close to 1: >> ACB = [ 0.4970 0.8...

alrededor de 8 años hace | 0

| aceptada