一個奇怪的問題??????

spring

Select object: ((-1 . <Entity name: 414d2148>) (0 . "LINE") (330 . <Entity
name: 40d0fcf0>) (5 . "CA31") (100 . "AcDbEntity") (67 . 0) (410 . "Model") (8
. "0") (100 . "AcDbLine") (10 0.0 0.0 0.0) (11 10.0 4.44089e-016 0.0) (210 0.0
0.0 1.0))

(11 10.0 4.44089e-016 0.0)這是怎麼回事
下面是圖檔

xazhji

没有发现你所述的问题，一切正常！
Command: (entget (car (entsel)))

Select object: ((-1 . <Entity name: 4003b588>) (0 . "LINE") (330 . <Entity
name: 40039cf0>) (5 . "CA31") (100 . "AcDbEntity") (67 . 0) (410 . "Model") (8
. "0") (100 . "AcDbLine") (10 0.0 0.0 0.0) (11 10.0 4.44089e-016 0.0) (210 0.0
0.0 1.0))

Command: (entget (car (entsel)))

Select object: ((-1 . <Entity name: 4003b588>) (0 . "LINE") (330 . <Entity
name: 40039cf0>) (5 . "CA31") (100 . "AcDbEntity") (67 . 0) (410 . "Model") (8
. "0") (100 . "AcDbLine") (10 0.0 0.0 0.0) (11 10.0 4.44089e-016 0.0) (210 0.0
0.0 1.0))

Command: zoom

Specify corner of window, enter a scale factor (nX or nXP), or
[All/Center/Dynamic/Extents/Previous/Scale/Window] <real time>: *Cancel*

Command: (entget (car (entsel)))

Select object: ((-1 . <Entity name: 4003b588>) (0 . "LINE") (330 . <Entity
name: 40039cf0>) (5 . "CA31") (100 . "AcDbEntity") (67 . 0) (410 . "Model") (8
. "0") (100 . "AcDbLine") (10 0.0 0.0 0.0) (11 10.0 4.44089e-016 0.0) (210 0.0
0.0 1.0))

meflying

很正常啊，
(11 10.0 4.44089e-016 0.0)是LINE的终点坐标
4.44089e-016是Y坐标，这是科学记数法

spring

meflying发表于2003-8-5 8:41:00很正常啊，
(11 10.0 4.44089e-016 0.0)是LINE的终点坐标
4.44089e-016是Y坐标，这是科学记数法

怎麼一下子又跑到科學记数法去了呢???
下面這個不是科學记数法阿
Command: (ENTGET(CAR(ENTSEL)))
Select object: ((-1 . <Entity name: 4019ca18>) (0 . "LINE") (330 . <Entity
name: 4018bc10>) (5 . "A9E3") (100 . "AcDbEntity") (67 . 0) (410 . "Model") (8
. "0") (100 . "AcDbLine") (10 11271.4 -1447.09 0.0) (11 11352.3 -1447.09 0.0)
(210 0.0 0.0 1.0))

meflying

因为这个点太小，如果不用科学记数法，就会变成：
0.0000000000000000444089，这样就太长了，系统会自动使用科学记数法显示。