Is it possible to use a function of Matlab toolbox without installing the tolboox itself?

Hi guys,

I need to use the function "wrapTo360" but I want to avoid installing the "Mapping toolbox".

Is it possible or do I have necessarily install the toolbox?

Thank you in advance!

Answer 1

[DGM]

You can just use basic tools to wrap angles.

A = -360:40:360

A = 1×19

-360 -320 -280 -240 -200 -160 -120 -80 -40 0 40 80 120 160 200 240 280 320 360

B1 = wrapTo360(A)

B1 = 1×19

0 40 80 120 160 200 240 280 320 0 40 80 120 160 200 240 280 320 360

B2 = mod(A,360);
mask = A>0 & B2==0;
B2(mask) = 360

B2 = 1×19

0 40 80 120 160 200 240 280 320 0 40 80 120 160 200 240 280 320 360

[Giuseppe]

Hi @DGM, can you explain why to include the line following lines?

mask = A>0 & B2==0;
B2(mask) = 360

Not just the line first line is enough?

B2 = mod(A,360)

[DGM]

That ensures that instances of 360 (and positive multiples) are mapped to 360 instead of 0, which replicates the behavior of wrapTo360(). If it weren't for the implicit requirement of replicating an existing behavior, I'd probably prefer to just use mod(). As to why that's the behavior of wrapTo360(), I'm not sure off the top of my head.

A = [0 360];
B1 = wrapTo360(A)

B1 = 1×2

0 360

B2 = mod(A,360)

B2 = 1×2

0 0

[Giuseppe]

Since I'm interested only in wrapping an angle in the interval [0deg 360deg], is it sufficient to use only mod()?

[DGM]

That's up to you to decide. I'm not familiar with using wrapto360() in its intended applications, so I don't know if that little detail is important for some particular reason. If you're trying to use code that was written around using wrapto360(), I'd probably try to replicate its behavior unless I were certain that I didn't need it. It seems like a negligible compromise to make.

Answer 2

[Cris LaPierre]

You would need to install the toolbox to have access to the functions it contains.

If you have access to MATLAB Online, you could try running your code there. All toolboxes you have access to are pre-loaded for you.