Can't explain why yesterday I got a clean Trifolium,
today it returns crappy again. It puzzled me for quite a while.
I don't lie ... proof => clean InterseX posted last night.
Made a backup last night, crappy today, Ah !
Why that 0 junction from stack(,,,) where there is none from construction ?
It looks like the story of the last candy in the box and "Momy's cat".
Worst than Murphy's law !

2D Parametric Plot [Create Trifolium].sm (62 KiB) downloaded 47 time(s). ... Smath 6179

The files differ in the value of N, in the first file N = 100, and in the second file N = 30.

Wrote

The files differ in the value of N, in the first file N = 100, and in the second file N = 30.

... yesterday it doctored itself by coincidence during many attempts.
This version is doctored [gray 235 ... can't explain .
In short shadow in context ... occasional Mathcad/Mathematica.
"shadow in context" is Mathematica expression of code can't be doctored.

2D Parametric Plot [Create Trifolium] Copy.sm (36 KiB) downloaded 42 time(s). ... doctored 6179

Jean, it seems to me that in the for operator there should be not N, but N + 1.

Wrote

Jean, it seems to me that in the for operator there should be not N, but N 1.

Module xd(L,H,N) has fixed bounds [L, H], 'N' sets the number of calculated values,
including the bounds. It has nothing to do with the "bug". The attached highlights
the bug. Anything you code depend upon invisible/borrowed codes. This one may not
appears in newer versions from newer sub-codes.
Enable/disable => observe the Trifolium plot below.
The Shadow in Context is between the triplet stack(f1,f2,f3) and the residual reverse[v,V4].
Conclusively: should be tested with more recent than SS 6179.
It may suggest to get reverse & stack codes from other sources.
It does not seems to be dependent upon the line code.



2D Parametric Plot [Create Trifolium] Copy.sm (37 KiB) downloaded 45 time(s).