https://wiki.freecadweb.org/FEM_ResultShow#Usage

I stumbled over the "Calculate and plot" button. Can anybody please help me how this works and how I can get a plot?

Here is what I already found out:

- I can enter an equation like "x-y" and pressing the button gives me the result in the Min/Max field and colors the result mesh.

But there are many issues i don't understand yet:

- why does "x*x" not give me correct result?

- why is the input "x^2" invalid? Meaning what is the syntax to get a square or square root?

- how can I create a plot?

- open the result dialog, in the equation input, delete for example a character of the comment. As result you get:

Code: Select all

`TypeError: user_defined_text() missing 1 required positional argument: 'equation'`

@NewJoker , @UR_, @user1234, @johnwang can you help me here?