I have found a low priority issue where special plots (e.g. text shown on the 2D plot) do not appear on the 2D plot when using an "if...else" domain definition. The Special Plots do show up if I use boolean domain definitions, however.

I have attached a sample file here that should make it clear.

I also tried submitting this to the bug tracker, but it appears I do not have the privileges to log into the bug tracker system.

Thank you!

SpecialPlotsBug.sm (8,83 KiB) scaricato 1653 volta(e).

If you declare the system is exact Bolean,
set it exact from the onset plot 1

Wrote

I have found a low priority issue where special plots (e.g. text shown on the 2D plot) do not appear on the 2D plot when using an "if...else" domain definition. The Special Plots do show up if I use boolean domain definitions, however.

I have attached a sample file here that should make it clear.

I also tried submitting this to the bug tracker, but it appears I do not have the privileges to log into the bug tracker system.

Thank you!

You can use cases() in Custom Functions Plugin for that purpose.
Plotting, solve(), roots(), FindRoot() and various commands may don't like if/else.
Sometimes an error can be fixed by using a line(), not in your example though.
Recursive functions doesn't solve when line() and cases() used both, etc etc.

These are bitter tricks/bugs, I tend to forgot them everytime.
After struggling a while however I remember the "correct usage".

Regards

Would be interesting, why if() is not defined by default as boolean expression just like cases().

Is there any use case, where the original if() is better than the one defined with cases()? If not, then I propose to include re-definition of if() in the custom functions plugin.

Bolean bug(s) are user bug.
Many projects will accommodate either style if/else ... if/otherwise
A long suite of conditions is horror if/else.
Doctor your plot 1 as proposed, press F9



Integrate Discontinuous_1.sm (24,57 KiB) scaricato 1620 volta(e).
Integrate Discontinuous.sm (36,51 KiB) scaricato 1665 volta(e).
Integrate Discontinuous_2.sm (132,47 KiB) scaricato 1658 volta(e).

Examine more Bolean applications.

Dolphin.sm (37,09 KiB) scaricato 1696 volta(e).

Wrote

...
Is there any use case, where the original if() is better than the one defined with cases()?
...

Hi Martin. Yes. Here one: https://en.smath.com/forum/yaf_postsm34552_Custom-Functions-plugin.aspx#post34552

and here the Davide answer about that: https://en.smath.com/forum/yaf_postsm34559_Custom-Functions-plugin.aspx#post34559

I also remember some other about what complex could be the expressions in cases(), but can't found that.

Best regards.
Alvaro.

... doctored for convenience.
Observe collected plot, easy to manage.
Cheers ... Jean.

SpecialPlotsBug DOCTORED.sm (10,86 KiB) scaricato 1645 volta(e).

... you make Bolean algo style
for convenient command line.