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138 total contributions since 2014

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Question

How to run an existing matlab file from Python ?
Hi All there is an example question on mathworks on how to run a matlab code from Python, but it doesn't explain how to run an ...

13 dagen ago | 0 answers | 0

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Question

How to find the translations and rotations in a new Coordinate system?
Hi All How can I find the relateive translations and rotations of a point in a new Coordinate system when I know its translat...

14 dagen ago | 0 answers | 0

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Question

How to get all of the roots of a syatem of second order equation ?
Hi all I'm solving a set of second order equations that can have more than one root(answer) that can satisfy a certain condit...

21 dagen ago | 1 answer | 0

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Question

The result of rotation matrix rotx(angle) with a coordinate does not give the desired result
Hello All I have a point with coordinates : x y z : 0.00 60.00 225 and want to rotating it around the global ...

25 dagen ago | 1 answer | 0

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Question

How to check the internal solution results of Fsolve to know where the matrix dimension assignment has problem?
Hi All I am solving a set of 2nd order equations via fsolve. But it seems like that already in the first equation I have got ...

ongeveer een maand ago | 1 answer | 0

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Question

How to remove the integration constants from the integrated random signal ?
Hi All After integrating a random signal , How do I know the integration constants like after the second integration to know ...

ongeveer 2 maanden ago | 1 answer | 0

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Question

How to use find-peaks function and keep the FRF of the signal the same
Hi I want to reduce the number of samples from a signal by filterting the small amplitude peaks, but I don't want the FRF of t...

4 maanden ago | 0 answers | 0

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Question

Can MATLAB convert text file to RPC III format ?
Hi all is there a toolbox in MATLAB to convert txt or csv or xlsx format to RPC III file format ?

4 maanden ago | 1 answer | 0

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Question

Can't open and write an Excel file that should be created by MATLAB
I have to write some large amount of data using xlswrite and since they are multiple files, they are written one by one . meanin...

5 maanden ago | 0 answers | 0

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Question

Why do I get no solution found in Fsolve despite the results match my nonlinear equations ?
Hi All I am solving a set of Non Linear equations. when I put the solution results in each of my equations, the result is zero ...

5 maanden ago | 1 answer | 0

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Question

How do I calculate the numerical Jacobian for a set of six non linear equations ?
Hi All how do I calculate the Jacobian matrix for the following equations based on the example I put afterwards ? please don't...

5 maanden ago | 1 answer | 0

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Question

Do I need to reset Fsolve Parameters if I use Fsolve twice in my code ?
Hi All If I have to use Fsolve twice in my code, do I need to reset any paramter ? [x,fval,exitflag,output] = fsolve(fun,x...

5 maanden ago | 1 answer | 0

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Question

3D plot gives empty figure
Hi all I have 4 matrices of 4x4 size. I do for n=1:size(P1,1) plot3(P1(n,2),P1(n,3),P1(n,4)) hold on ...

5 maanden ago | 0 answers | 0

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Question

How to replace my optimset with equivalent optimoptions ?
Hi all using Fsolve, I am getting into difficulties and want to use Jacobian and Hessian as well , but first I need to pass f...

5 maanden ago | 1 answer | 0

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Question

Why doesn't atan2 (u,v) give me the right angle of two simple vectors?
Hi All I was using the atan2(u,v) to calculate the angles between vectors, untill I checked it for u=[0,0,0] v= [1,1,1] doi...

5 maanden ago | 1 answer | 0

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Question

How not to repeat the whole code after the try catch loop ?
Hi all is there a line to indicate the main code between the try catch loop to avoide rewriting it ?

5 maanden ago | 1 answer | 0

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Question

How to run Matlab from python to run an m.file in a specific folder?
Hi All there is a tutorial on how to run matlab from python , but it does not say how to run an .m file from a specific folder,...

5 maanden ago | 0 answers | 0

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Question

Matlab doesn't write on excel after the first loop in try catch
Hi all I use try catch to force matlab to continue the loop and in each loop I have the parameters to write to excel files. B...

6 maanden ago | 2 answers | 0

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Question

Error in using try catch
Hi All I have a loop to be forced to continue , and I get an error after the first cycle , since in the beginning of each tr...

6 maanden ago | 1 answer | 0

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Question

xlsread doesn't read a column that contains string in the cells with unknown number of rows
Hi all I am trying to read from an xlsx Excel file some rows in clumn 1 that are strings. xlsread alone does not function...

6 maanden ago | 1 answer | 0

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Question

What should I do if Fsolve can not find a solution in the middle of the solution ?
Hi All despite having defined a very tight tolerance and high MaxnoEvals and iteration , I get Fsolve Stalled. I don't know...

6 maanden ago | 1 answer | 0

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Question

How to increase reading speed from a Gigabyte large file ?
Hi all how do I increase reading speed from an Excel file that contains rows and columns with a volume of some GigaBytes?

6 maanden ago | 0 answers | 0

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Question

How to find the transformation matrix for a plat knowing the old and new coordinates of 3 points on it ?
Hi All How do I define the transformation matrix of a plate that moves in space , knowing the old and new coordinates of 3 po...

6 maanden ago | 2 answers | 0

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Question

How can I reduce the fsolve error?
Hi All I'm solving a set of 9 second order equations with fsolve. It seems that it has a constant error on one of the varia...

6 maanden ago | 0 answers | 0

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Question

Too many output parameters error in Fsolve when I turn Jacobian On
Hi all why do I get Too many output parameters error in Fsolve when I turn Jacobian On ? I have 9 variables to solve , where ...

6 maanden ago | 1 answer | 0

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Question

What are all the options to improve Fsolve?
Hi All Using FSolve , to solve a set of non linear equations , I get warnings like : optimization terminated : first order...

6 maanden ago | 1 answer | 0

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Question

How do I save the history of length change of the 6 joints in the stewart platform with gripper ?
Hi all On the stewart platform with gripper example in MATLAB, I need to modify its fixed point of its legs coordinates and t...

ongeveer een jaar ago | 0 answers | 0

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Question

Does the importgeometry command work to import any geometry in simmechanics ?
Hi All I need to import some IGES or STEP geometries in simmechanics. could you please tell me if the import geomtery command...

ongeveer een jaar ago | 1 answer | 0

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Question

Which element in Simmechanics could be use in place of a wire sensor
Hi all I need model wire sensors that connect two plates that move with respect to eachother. which simmechanics element is b...

ongeveer een jaar ago | 0 answers | 0

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Question

How do I verify whether what I am removing from a noisy image is only the noise
Hi All I have to remove noise from an image, that I don't have a sample without noise to compare to. How could I know if I am...

ongeveer een jaar ago | 2 answers | 0