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发表于 2007-2-2 22:17:32
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来自: 中国黑龙江哈尔滨
Subject: Sample GRIP program to create polar points from file
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$$ This program will read an ASCII data file consisting of polar point
" J* P, m( o+ t; Y( y. } $$ data in two columns and create up to 1000 points. It will also
4 G$ r4 t U' O- k $$ optionally create a closed spline thru the points.$ ~; q- ?4 k% g1 d" j, ]! f" ? i
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STRING/ tfn(132), fmt(80)
: i( o- T5 X7 b/ _6 q NUMBER/ resp, r, theta& e3 p* T. s0 r u) i6 {
ENTITY/ pts(1000), zero2 B+ z3 e- e" E) r6 L
: I% o& [" Z$ |4 E# ~) l" C fmt = '#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@' + $2 T! t4 h) [+ g, a
'@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@', g% n( ?# w) \, Z, d2 W C9 a0 `
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a20: TEXT/'Enter full path to data file', tfn, resp, deflt8 Z# @1 d S. r) ~
JUMP/ a90:, a90:, resp# T! s) Q8 m9 x- d
7 V- E, `! g; L" _; i+ `& c FETCH/ TXT, 2, tfn# G, n- F( Z" y- I! x
tfn = &SFNAME(2,IFERR,a20: )
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7 U0 w3 p9 Y' p" a" b $$ Find the space between the columns and set up the format string
2 ~* _4 x) Q8 g( B+ {0 `# D RESET/ 2
8 x' V2 F9 V" w* E5 {9 ~ READ/ 2, USING, fmt, tfn
" w$ d" G; u2 e' w ii = 1
9 J, b8 l+ S: E `4 l/ Xa25: jj = FNDSTR(tfn, ' ', ii + 1)- d2 m3 a2 e5 T: r6 \' S. ~
IFTHEN/ jj == (ii + 1), M6 L T0 T0 }! E% D* G& a. n
ii = jj
; v9 X" b3 g& J JUMP/ a25:) t1 _2 S7 E5 v% a1 U
ELSEIF/ jj == 0
# s9 L; F6 N4 U jj = FNDSTR(tfn, chrstr(9), ii + 1)
7 O! |" W( b& a( f: N' q ENDIF& v$ v8 G8 |: ~' u: W1 @ K3 W g4 H/ E4 z
fmt = REPSTR(fmt, '@', '#', jj)
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' H7 m1 R5 E$ y0 O zero = POINT/ 0,0,0
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" E" i6 G" V/ S* o RESET/ 28 q1 R" {9 N& c% F8 I, S
ii = 0
$ ?! O3 A$ L3 m' i, La30: READ/ 2, USING, fmt, IFEND, a70:, IFERR, a70:, r, theta
: ]8 y7 n; r7 T% E# a; r- r- ~ pts(ii = ii + 1) = POINT/ zero, POLAR, r, theta
; W& o, m' l3 a/ A5 L6 u9 M+ W6 T if/ ii < 1000, JUMP/ a30:+ }# i' F9 P- u4 e% I' V
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a70: DELETE/ zero
% [4 a' R0 t x# f' H& Q- K FTERM/ TXT, 2% j7 X% h& [, R( B7 n+ ]
7 _# V: u5 l2 O! Q) L+ ? VIEWE/ AUTO$ ~8 ^9 r( M9 A3 \7 o- t- J
6 i( F+ \0 t, f' g CHOOSE/ 'Create closed spline thru ' + istr(ii) + ' points?', $
# I8 ^8 _) S, _& t/ v2 J0 }3 u R0 \% K 'yes', 'no', deflt, 1, resp
4 k; `( D8 b7 R4 z7 T' ?. T" p( W IFTHEN/ resp == 5
: d/ L. x1 R, l7 A7 ^2 S' z2 {7 ~ BCURVE/ pts(1..ii), DEGREE, 3, CLOSED
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CHOOSE/'Delete points', 'yes', 'no', deflt, 1, resp
( F% y1 {2 V) m' t) R: { IF/ resp == 5, DELETE/ pts(1..ii)
V$ s& \/ g* Y: e1 i1 u/ z ENDIF
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9 P1 o, g( g1 C4 ^8 ^a90: HALT' X7 f" e$ W/ y6 t; ^3 F
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6 f0 A, u0 F- J9 M q" F给你个例子,自己改造一下 |
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