Nyquist Plot Mathcad Prime: How to make?

[Cornel]

Hello,

How to draw Nyquist Plot in Mathcad Prime?
For example:

(Last 2 images are the same)

For more info about Nyquist Plot:

https://lpsa.swarthmore.edu/Nyquist/NyquistExamples.html 

[Werner_E]

You may be interested in this thread: Polar Plots and Nyquist Plots - PTC Community

[LucMeekes]

The relatively easy part is:

with which you can:

or:

Success!
Luc

[Cornel]

How to make/take into account these arrows in the Nyquist Plot? We can see that Matlab take into account these arrows...
There are 2 questions:
1. How to find the correct direction for each arrow?
2. How to plot these arrows?

[Cornel]

[Cornel]

 

Here the arrow does not matter (meaning that arrow not need to appear in plot).

OK also in Mathcad:

Here also the arrow matter (meaning that also the arrow must appear into plot)

EDIT 1:

OK in Mathcad, but without having arrows:

EDIT 2:

The question is how to add arrow to a polar plot? Below is some reference from Matlab:

https://www.mathworks.com/help/matlab/ref/quiver.html 

https://www.mathworks.com/matlabcentral/answers/260903-adding-an-arrow-to-a-polar-plot 

[ttokoro · Accepted solution]

First one's arrow size dependes on dL(w)/dw. If you want to plot same size arrow, Just do below.

[Cornel]

Thank you. It's better now having arrows of same size:

[ttokoro]

[Cornel]

Thank you @ttokoro 

Your function @ttokoro