MATLAB

[ChAoTiCpInOy]

Anyone know how to use Matlab in an Engineering setting? I need help with my programs...

 

[TecHNooB]

What specifically? I might be able to help.

 

[Fenixgoon]

matlab is awesome. learn it

 

[GodlessAstronomer]

Haven't used it in some time. Perhaps you should state your problem.

 

[herm0016]

matlab is cool. i use it in my labs and classes. what is the issue?

 

[Tiamat]

I remember matlab being very powerful, but i've long forgotten how to use it

 

[hypn0tik]

Depends on what you need help with.

 

[paulney]

Dear god, not the Furrier transformations.
I hated that crap.

 

[ChAoTiCpInOy]

It's for this Aerospace class that I am doing. Have to plot a bunch of stuff and I'm having a hard time doing it. Don't get me wrong I know how to program (C++ and VB) but this is so weird.

 

[frostedflakes]

Originally posted by: paulney
Dear god, not the Furrier transformations.
I hated that crap.

:laugh:

 

[sciwizam]

Plotting shouldn't be that hard. (Used matlab a awhile ago)

 

[duragezic]

Originally posted by: ChAoTiCpInOy
It's for this Aerospace class that I am doing. Have to plot a bunch of stuff and I'm having a hard time doing it. Don't get me wrong I know how to program (C++ and VB) but this is so weird.

Post what the question or problem is, then what you have done so far. I agree it is a bit different but with some more information and I know that you will get plenty of help here. Also maybe this should be in the Programming forum (it might get moved there). Lots of smart people there.

 

[pray4mojo]

Post the problem?

 

[alphatarget1]

matlab is awesome. I'm a mathematica fan but it's not tooooo much different.

 

[George P Burdell]

Originally posted by: Tiamat
I remember matlab being very powerful, but i've long forgotten how to use it

This

 

[ChAoTiCpInOy]

It's a long problem. Basically create a routine that calculates the 1959 ARD Model standard atmosphere. Then create plots that show the standard atmosphere up to 400,000 ft. Plot temperature, pressure, and density on separate figures.

 

[CycloWizard]

Originally posted by: ChAoTiCpInOy
It's a long problem. Basically create a routine that calculates the 1959 ARD Model standard atmosphere. Then create plots that show the standard atmosphere up to 400,000 ft. Plot temperature, pressure, and density on separate figures.

That model is full of fail. Don't bother.

Oh, and there IS an entire programming forum.

 

[KillerCharlie]

When I did that for my first aero class we used Fortran. Matlab is awesome for that kind of stuff, until you need to do CFD, which requires raw numerical power.

 

[Brainonska511]

Originally posted by: frostedflakes

Originally posted by: paulney
Dear god, not the Furrier transformations.
I hated that crap.

:laugh:

Yeah... I prefer the bald ones myself.

Now Fourier Transforms - I hate those.

 

[ArmchairAthlete]

Dr Billy V Koen can help.

http://matlabforever.ytmnd.com/

 

[MovingTarget]

MATLAB is pretty awesome. However, being cheap as I am, I use FreeMAT at home.

 

[drinkmorejava]

As someone else said, MATLAB is awesome, learn it.

BTW, you'll start liking it a lot more when it can solve all of your eigenvalue matrices when you get into CFD.

So what do you need, I can probably help.

If they give you the formulas, basically, create vectors with the values through while loops, then plot with plot(x,y,'r') where r is the color and can be lots of things, hint r=red, and x is a value in the vector

hold on; will let you plot more than one point on a graph

linspace(1,10,10) will give you a vector with ten values from 1 to 10 if you need that for something.


this will plot a straight line of 10 points

n=1;
x=linspace(1,10,10);
while n<11
plot(x(n),x(n),'g'); hold on;
n=n+1;
end

 

[Fenixgoon]

Originally posted by: drinkmorejava
As someone else said, MATLAB is awesome, learn it.

BTW, you'll start liking it a lot more when it can solve all of your eigenvalue matrices when you get into CFD.

So what do you need, I can probably help.

If they give you the formulas, basically, create vectors with the values through while loops, then plot with plot(x,y,'r') where r is the color and can be lots of things, hint r=red, and x is a value in the vector

hold on; will let you plot more than one point on a graph

linspace(1,10,10) will give you a vector with ten values from 1 to 10 if you need that for something.


this will plot a straight line of 10 points

n=1;
x=linspace(1,10,10);
while n<11
plot(x(n),x(n),'g'); hold on;
n=n+1;
end

you gotta be careful though - if he makes a very small spacing, using hold will eat up lots of memory.

i'd rather preallocate the array, use a loop to calculate the values, and then plot outside of the loop. simple and fast.

 

[SirStev0]

MATHNET>MATLAB

 

[ChAoTiCpInOy]

I have to use a for loop to evaluate the equation at different heights.