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Feeds
how to simplify/solve a trigonometric function
syms ajj Giijj Hii real syms angle lat real Gincliijj = Giijj.*cosd(angle)+1000*(-sind(ajj).*cosd(lat)*sind(angle).*cosd(0)+co...
2 días hace | 0
anonymous function with rng call inside
f = @(t) struct('rng', rng(ceil(t/10)), 'r1', rand(1)).r1 f(2)
2 días hace | 0
| aceptada
The etc directory with lmstat, lmutils is missing from a fresh R2026a installation; recommendations?
See https://www.mathworks.com/help/install/ug/update-network-license-manager-software-1.html for independent software that must ...
4 días hace | 0
| aceptada
what is compared in gpu demo
No, that benchmark does not compare to host processing speed at all.
4 días hace | 0
Dear all, I have the following integral. Standard numerical integration (direct summation) takes about 40 seconds on a regular PC. Any tricks to reduce this to a few seconds?
Ny = 50; rng(655321); M2Ny = rand(2*Ny, 2*Ny); ZNy = zeros(Ny, Ny); INy = eye(Ny); I2Ny = eye(2*Ny); C = @(k1, Ny) [exp(-1...
7 días hace | 1
uicontrol edit field .String doesn't visually update from KeyReleaseFcn unless a breakpoint is set
uicontrol for traditional figure has the property that the String property does not update visually until one of two circumstanc...
7 días hace | 0
| aceptada
Does MATLAB phone home on startup? (Startup time with VPN and without VPN)
It looks to me as if MATLAB connects to licensing.mathworks.com upon startup. There are other connections from MATLAB Service ...
15 días hace | 0
| aceptada
Method for returning only the image portion of a Figure?
for i = 1:20 img = imread(sprintf('ULAMovePerp_full/%s',contents(i).name)); img_cropped = img(70:580,161:1020,:); ...
16 días hace | 2
| aceptada
Execution of script mpower as a function is not supported
Your D:\App Files\MATLAB\toolbox\matlab\matfun\mpower.m is probably corrupted. In R2025b at least, mpower really is a MATLAB f...
17 días hace | 0
Issues with specifying the renderer in MATLAB 2026a for graphics
MATLAB no longer uses OpenGL at all, as of R2025a. OpenGL is no longer an option at all, and can no longer be selected. https...
28 días hace | 0
Can MacBook Air apple silicon install Matlab 2025b
That should work fine in practice. There is the possibility that there will be problems because the operating system on the 202...
28 días hace | 0
| aceptada
Draw a circle at the end of a quiver3 line
Depending on the accuracy you need for the circle: The traditional way to handle this is to plot points with marker 'o' and app...
alrededor de 1 mes hace | 0
User wants to use license in China
Mathworks wants to be sure that you are not importing a less expensive license into a more expensive region. So if you are tryi...
alrededor de 1 mes hace | 0
How to roll back to a previous update WITHIN THE SAME VERSION?
See https://www.mathworks.com/matlabcentral/answers/2136533-how-can-i-download-the-installer-for-a-previous-update-of-matlab "...
alrededor de 1 mes hace | 0
Rapid calculation of the number of points in a circular neighbourhood
If the set of points is constant, but the location to examine varies, then historically an efficient implementation has been to ...
alrededor de 1 mes hace | 1
Get and install Mapping Toolbox for R2021a
If you are using a quite recent version of MATLAB (latest two releases, three at most), then: Select the HOME tab in the tool r...
alrededor de 2 meses hace | 0
How to ensurethat the sum([0.7 0.2 0.1])==1 return true when testing equivalence relation
sum(sym([0.7 0.2 0.1])) == 1 isAlways(ans) sum(cellfun(@sym,{'0.7' '0.2' '0.1'})) == 1 isAlways(ans) sum([7 2 1])/10 == 1
alrededor de 2 meses hace | 1
"I want to download without installing" is not available in the drop down menu
Use https://www.mathworks.com/downloads/ and select the proper release, and download the installer. Run the installer, and sign ...
alrededor de 2 meses hace | 0
Changed behaviour in paste to cmd in R2026a
This behaviour changed as of R2024a, which corresponded to the start of the new desktop. I would not inherently expect there t...
alrededor de 2 meses hace | 0
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No more machine transfers available
You should contact Mathworks support. The Terms of Use place a limit on the number of times you are allowed to transfer the lic...
alrededor de 2 meses hace | 0
Symbolic expression output changes when turned into function?
%Define the mean and standard deviation of the target normal distribution %curve. mu = 7.5; stdev = 2.5/2; %Define the fun...
alrededor de 2 meses hace | 0
Alternative for linspace?
You can see from the below that none of the obvious methods exactly matches linspace() If I recall correctly, linspace breaks t...
alrededor de 2 meses hace | 0
How to parse ASCII string-based temperature values from Covesion OC3 controller in MATLAB App Designer
The historical way to do this kind of work was to use regexp to extract the components of the number (as character vectors), and...
2 meses hace | 0
installation question. I downloaded for an offline installation since I have an installation key. However, when I run the installer from the downloaded files, nothing runs.
The Mac bundles are not signed with a security certificate, so MacOS treats them as untrusted software. It used to be the case ...
2 meses hace | 0
How to call kummerU for a stand alone program
Unfortunately, kummerU is defined strictly by the Symbolic Toolbox, and nothing in the Symbolic Toolbox can be compiled. You wo...
3 meses hace | 0
How to transfer a master license to a new server
Master licenses are containers holding other licenses; https://www.mathworks.com/matlabcentral/answers/367335-what-is-the-differ...
3 meses hace | 0
It wants probability of a copier
syms lambda k pk = lambda^k * exp(-k) / factorial(k) pk100 = subs(pk, k, 100) Lambda = solve(pk100 == sym(25)/1000); Lambda ...
3 meses hace | 0
MATLAB 30-Day Trial Issue
There are a few main possible reasons why a trial might be denied: if you had requested another trial "too recently". Mathworks...
3 meses hace | 0
Como puedo reactiva una licencia 2022a cuando se cambia de computador
Go to the license center https://www.mathworks.com/mwaccount/?s_tid=user_nav_myac and there click on your license. In the page ...
3 meses hace | 0
How does this block diagram convert input current to per unit value?
Input values are multiplied by 2^6. Note that Qu<<6 has the same effect as Vu*2^6 for integer-type values, except that the undef...
3 meses hace | 0
