source:
trunk/SRC/Interpolation/imoms3.pro
@
360
Last change on this file since 360 was 325, checked in by pinsard, 17 years ago | |
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File size: 486 bytes |
Rev | Line | |
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[101] | 1 | ;+ |
[125] | 2 | ; |
[118] | 3 | ; @param xin {in}{required} |
4 | ; | |
[231] | 5 | ; @version |
6 | ; $Id$ | |
[118] | 7 | ; |
[101] | 8 | ;- |
[59] | 9 | FUNCTION imoms3, xin |
[114] | 10 | ; |
11 | compile_opt idl2, strictarrsubs | |
12 | ; | |
[59] | 13 | |
14 | x = abs(xin) | |
[125] | 15 | y = fltarr(n_elements(x)) |
[59] | 16 | |
17 | test1 = where(x LT 1) | |
18 | IF test1[0] NE -1 THEN BEGIN | |
19 | xtmp = x[test1] | |
[69] | 20 | y[test1] = 0.5*xtmp*xtmp*xtmp -xtmp*xtmp -0.5*xtmp + 1 |
[59] | 21 | ENDIF |
22 | test1 = where(x LT 2 AND x GE 1) | |
23 | IF test1[0] NE -1 THEN BEGIN | |
24 | xtmp = x[test1] | |
[69] | 25 | y[test1] = (-1./6.)*xtmp*xtmp*xtmp + xtmp*xtmp - (11./6.)*xtmp + 1 |
[59] | 26 | ENDIF |
27 | ||
28 | RETURN, y | |
29 | END |
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