why the coordinate repeat? why is there "e" in coordinates

After my terrible vocation in psyhiatric hospital i'm back asking questions

(vl-load-com)
(setq myFilter (list (cons 0 "LINE") (cons 410 "model")))
(setq alllines (ssget "x" myfilter))

(setq myFilter2 (list (cons 0 "insert") (cons 410 "model")))
(setq alllitems (ssget "x" myfilter2))

(setq acadobj1 (vlax-ename->vla-object (ssname alllines 0)))

(setq acadobj2 (vlax-ename->vla-object (ssname alllitems 0)))



(setq iPts (vla-intersectwith acadobj1 acadobj2 0))

(setq iPts (vlax-variant-value iPts))

(setq iPts (vlax-safearray->list iPts))

dont remember where i found this lisp, however its says something like variant type is not good,i wonder why

(defun get_all_inters_in_SS (SS	/ SSL	;length of SS
		     PTS	;returning list
		     aObj1	;Object 1
		     aObj2	;Object 2
		     N1		;Loop counter
		     N2		;Loop counter
		     iPts	;intersects
)
 (setq	N1  0				;index for outer loop
SSL (sslength SS)
 )
				; Outer loop, first through second to last
 (while (< N1 (1- SSL))
				; Get object 1, convert to VLA object type
   (setq aObj1	(ssname SS N1)
  aObj1	(vlax-ename->vla-object aObj1)
  N2	(1+ N1)
   )					;index for inner loop
				; Inner loop, go through remaining objects
   (while (< N2 SSL)
				; Get object 2, convert to VLA object
     (setq aObj2 (ssname SS N2))
    aObj2 (vlax-ename->vla-object aObj2)
				; Find intersections of Objects
    iPts  (vla-intersectwith
	    aObj1
	    aObj2
	    0
	  )
				; variant result
    iPts  (vlax-variant-value iPts)
     )
				; Variant array has values?
     (if (> (vlax-safearray-get-u-bound iPts 1)
     0
  )
(progn				;array holds values, convert it
  (setq	iPts			;to a list.
	 (vlax-safearray->list iPts)
  )
				;Loop through list constructing points
  (while (> (length iPts) 0)
    (setq Pts  (cons (list (car iPts)
			   (cadr iPts)
			   (caddr iPts)
		     )
		     Pts
	       )
	  iPts (cdddr iPts)
    )
  )
)
     )
     (setq N2 (1+ N2))
   )					;inner loop end
   (setq N1 (1+ N1))
 					;outer loop end
 Pts
)					;return list of points found
(setq all (ssget "X"))
(get_all_inters_in_SS all)

z is 10000000 ?

That "e" is used to represent very small, subunitary, coordinates:

(expt 10.0 -       ;will return 1.0e-008

(princ 0.00000001)   ;will return 1.0e-008

May also encounter it for big numbers:

(expt 10.0         ;will return 1.0e+008

On your first question, what you're seeing is the display value, it is in fact a double-precision floating-point number. It might "look" the same and probably they are but not really.

You have a misplaced closing parenthesis on the code you posted

(defun get_all_inters_in_SS (SS / SSL ;length of SS
       PTS ;returning list
       aObj1 ;Object 1
       aObj2 ;Object 2
       N1  ;Loop counter
       N2  ;Loop counter
       iPts ;intersects
)
 (setq N1  0    ;index for outer loop
SSL (sslength SS)
 )
    ; Outer loop, first through second to last
 (while (< N1 (1- SSL))
    ; Get object 1, convert to VLA object type
   (setq aObj1 (ssname SS N1)
  aObj1 (vlax-ename->vla-object aObj1)
  N2 (1+ N1)
   )     ;index for inner loop
    ; Inner loop, go through remaining objects
   (while (< N2 SSL)
    ; Get object 2, convert to VLA object
     (setq aObj2 (ssname SS N2)
       aObj2 (vlax-ename->vla-object aObj2)
    ; Find intersections of Objects
    iPts  (vla-intersectwith
     aObj1
     aObj2
     0
   )
    ; variant result
    iPts  (vlax-variant-value iPts))
    ; Variant array has values?
     (if (> (vlax-safearray-get-u-bound iPts 1)
     0
  )
(progn    ;array holds values, convert it
  (setq iPts   ;to a list.
  (vlax-safearray->list iPts)
  )
    ;Loop through list constructing points
  (while (> (length iPts) 0)
    (setq Pts  (cons (list (car iPts)
      (cadr iPts)
      (caddr iPts)
       )
       Pts
        )
   iPts (cdddr iPts)
    )
  )
)
     )
     (setq N2 (1+ N2))
   )     ;inner loop end
   (setq N1 (1+ N1))
       )
      ;outer loop end
 Pts
)     ;return list of points found
(setq all (ssget "X" ))
(get_all_inters_in_SS all)

HTH

z is 10000000 ?

switching to 2d workspace you think might help?