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DJ V


Last seen: 3 mois il y a |  Actif depuis 2016

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Programming Languages:
Python, C++, C, MATLAB, Fortran, Visual Basic
Spoken Languages:
English

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Question


Problems with Matlab and "Handle"
I'm asking for help, which is consistent with how your company chooses to describe this selection on your web site. You people ...

3 mois il y a | 1 réponse | 0

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Réponse apportée
I need help to figure out why these variables aren't being found.
Another question. If I use a division block, there are two inputs. One is marked with a multiplication symbol, the other with ...

4 mois il y a | 0

Réponse apportée
I need help to figure out why these variables aren't being found.
Okay, I need to know why this is only producing 100 data points. The simulation is 20 seconds long, and I thought I'd set it up...

4 mois il y a | 0

Réponse apportée
I need help to figure out why these variables aren't being found.
Okay, I'm having some trouble with the following code. It says: Error in EqnsOfMotionback (line 95) Pd = load("C:\Users\15372...

4 mois il y a | 0

Question


I need help to figure out why these variables aren't being found.
I have written simulink code that is to produce variables that later are to be read into Matlab. Unfortunately, Matlab interpre...

4 mois il y a | 1 réponse | 0

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Question


SImulink won't save the Pd.mat file for me.
Simulink won't save the Pd.mat file for me. I need to know how to get Pd.mat to save the data indicated in the attached file.

4 mois il y a | 1 réponse | 0

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Question


In Simulink, how do I set the time step for simulations? I want it to be 0.1 seconds long. I've got it set to run 20 seconds.
I need to know how (and where) to set the time step for Simulink simulations. I've got it set to 20 seconds. I want to set it ...

4 mois il y a | 1 réponse | 0

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Question


How do I name a variable in Simulink so that I can later use it to compute a value, such as sin(psi) or cos(phi) or tan(theta).
How do I name a variable in simulink so that i can later use it to compute a value based on it, such sin(psi) or cos(phi) or tan...

4 mois il y a | 1 réponse | 0

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Question


Simulink Error Message Inquiry
I'm not getting error messages relative to a new integration problem that I've mapped into Simulink. Its telling me the followi...

5 mois il y a | 1 réponse | 0

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Question


Need some help learning Simulink
I'm having some trouble with Simulink. I need to be able to frame the input to an integration routine in terms of the time vari...

5 mois il y a | 1 réponse | 0

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Question


Can't get Simulink to start in Windows
I try to start Simulink using a Windows shortcut. Instead it says: >> start_simulink >> matLabroot\bin\win64\matlab.exe -r ...

5 mois il y a | 1 réponse | 0

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Question


Why won't my computer display the top of the output? Why does it cut if off?
The output from this program cuts off the initial data that I instruct it to output. Why is this happening? Note: what is bein...

5 mois il y a | 1 réponse | 0

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Question


Having trouble printing variables I use as inputs to a function.
Okay, I'm having trouble getting Matlab to print variables out that I use as inputs to a function that are printing out NaN as t...

5 mois il y a | 2 réponses | 0

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Question


Matlab ODE 4.5 Runge Kutta problem solver. Can't get it to work for one problem set.
I can't get the problem solver to work for myFun4. I don't understand why. It appears like the prior three myFun1, myFun2, and...

5 mois il y a | 1 réponse | 0

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Question


Problems with Matix Manipulation
I copied this routine, so I'm not that familiar with it. It appers to have some errors built in. Matlab is giving me the follo...

6 mois il y a | 1 réponse | 0

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Question


I'm being told "Function definition not supported in this context. Create functions in code file."
I'm being told that the function in this code is not supported "in this context". What does this mean. It tells me to create f...

6 mois il y a | 1 réponse | 0

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Question


Getting error message when running Runge Kutta solution...
The code that produces the errors is below: clc; mass = 13.5; Jx = 0.8244; Jy = 1.135; Jz = 1.759; Jxz = 0.1204; G = Jx*J...

6 mois il y a | 1 réponse | 0

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Question


Don't understand the reason this code is giving me errors.
The code that is producing the error is below. It says: >> test Error: File: test.m Line: 32 Column: 58 Invalid expression. ...

6 mois il y a | 1 réponse | 0

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Question


Using Matlab Runge Kutta Routine
I'm having trouble with the following code. I'm trying to test it to get it to produce the final value as it proceeds through t...

6 mois il y a | 1 réponse | 0

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Question


How do I call Simulink from Within Matlab then go back to the M-file software?
Alright, I need to call a Simulink file from an M file as though it were a subroutine. How do I call the Simulink file from wit...

7 mois il y a | 1 réponse | 0

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Question


Question on Aircraft Drone Modeling - Simulation - Data Selection and Entry
Okay, I'll be blunt. I'm trying to learn about aircraft aerodynamics by working through a textbook on drone design. I have no ...

8 mois il y a | 1 réponse | 0

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Question


I have trouble getting MATLAB to increase altitude or plot tail height upward when I use a positive number. I have to use a negative number. Why is this???
Code: pn=0; pe=0; pd=0; phi=0; theta=0; psi=0; handle=[]; %Simulation parameters dpn=0.5; %Change in position. dpsi=0....

9 mois il y a | 1 réponse | 0

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Réponse apportée
I need to learn how to use this code. I'm trying to implement it in MATLAB. I'm having trouble getting the plane to assume a higher altitude.
Alright, I can get this to work using the line of code in the program. I have to subtract the incrementing value from the base ...

9 mois il y a | 0

Question


I need to learn how to use this code. I'm trying to implement it in MATLAB. I'm having trouble getting the plane to assume a higher altitude.
I'm having trouble getting the plane to assume a higher altitude. Can anyone please look for the comment in the top section tha...

9 mois il y a | 1 réponse | 0

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Question


I'd like to do various things, including controlling the dimensions of the plot box. What I do here with xlim, ylim, and zlim doens't work.
I put the following together. It runs, but it doesn't produce an image that moves on the screen. Instead, the screen moves aro...

9 mois il y a | 2 réponses | 0

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Question


I have a problem involving textbook MATLAB and use of handles and functions
I'm having problems figuring out how to get some MATLAB code from a textbook to run. The code follows. The only original code ...

9 mois il y a | 1 réponse | 0

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Question


Plotting Lines and Points in 3D
I need to learn how to plot lines and points in 3D. Can someone please provide an example in Matlab? Thank you.

9 mois il y a | 1 réponse | 0

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Question


WHen I've started Matlab int he past, it always started from point last session ended. I'm using student version now, and it won't do that. Why not?
WHen I've started Matlab int he past, it always started from point last session ended. I'm using student version now, and it wo...

presque 8 ans il y a | 1 réponse | 0

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Question


Need to get dimensions to match and to return a 0 x 0 matrix for empty row.
This code give me a 1 x 0 array for any row that is empty. I need it to return a 0 x 0 empty matrix for any row that is empty. ...

environ 8 ans il y a | 2 réponses | 0

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Réponse apportée
How do I transform this handle into a string?
Okay, solved this one. Thanks for all the help.

environ 8 ans il y a | 0

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