projects / pdp8.git / blame
| Commit | Line | Data |
|---|---|---|
| 81e70d48 PH |
1 | C -+-+-+-+-+ \ e H A E F I 3 . F T \ e -+-+-+-+-+\r |
| 2 | C\r | |
| 3 | C\r | |
| 4 | SUBROUTINE FI3LTR\r | |
| 5 | INCLUDE HAEBUF.FI\r | |
| 6 | INCLUDE HAEGSA.FI\r | |
| 7 | INCLUDE HAEPTI.FI\r | |
| 8 | INCLUDE HABRK.FI\r | |
| 9 | INCLUDE HAEI85.FI\r | |
| 10 | INCLUDE HAETTY.FI\r | |
| 11 | C\r | |
| 12 | \fC\r | |
| 13 | REAL COND\r | |
| 14 | INTEGER NCOND\r | |
| 15 | EXTERNAL COND,NCOND\r | |
| 16 | C\r | |
| 17 | REAL FFTX(85), @ PART OF THE FFT BUFFER\r | |
| 18 | * ORD,ABZ,TEMSET,\r | |
| 19 | * FFTMIN,FFTMAX, @ HERE WE COMPUTE THE NEW MIN/MAXIMUM OF THE POWER SPECTRUM SCANNED\r | |
| 20 | * X1,X2,X3,Y1,Y2,Y3 @ TEMPORARY STORAGE\r | |
| 21 | INTEGER I,J,INCR2,PNT,BAND\r | |
| 22 | LOGICAL F1, @ SAMPLE BUFFER IS EMPTY FLAG\r | |
| 23 | * W @ BUFFER CHANGED FLAG\r | |
| 24 | C\r | |
| 25 | C\r | |
| 26 | C\r | |
| 27 | C OPEN THE INPUT DATA FILE UNIT 5\r | |
| 28 | C READ THE FILE HEADER FIRST BLOCK AND\r | |
| 29 | C THE DATA HEADER, THE SECOND BLOCK OF UNIT 5\r | |
| 30 | C INSERT THE COMMON CEGESA FROM THE DATA FILE\r | |
| 31 | C\r | |
| 32 | IF (REC5.LT.1) DEFINE FILE5(MAXBL5,85,U,REC5)\r | |
| 33 | REC5=1\r | |
| 34 | F1=SAMCNT.EQ.0 .OR. .NOT. COMP @ HEADER OF FILE 5 DOES NOT MATCH THE HEADER OF THE ACTUAL SAMPLE BUFFER\r | |
| 35 | READ (5'REC5) (RCRD0(I),I=1,85) @ READ THE FILE HEADER\r | |
| 36 | IF (F1) SAMCNT=0 @ CLEAR THE ACTUAL SAMPLE BUFFER\r | |
| 37 | IF (F1) COMP=.FALSE. @ AND THE COMPUTATIONS FLAG TOO\r | |
| 38 | IF (REDVAL.NE.6H2DPWLD) GOTO 20 @ RECORD IS EMPTY\r | |
| 39 | REDVAL=0 @ FOR SAVETY ONLY\r | |
| 40 | READ (5'REC5) LCEGSA(1),(LCEGSA(I),I=2,LCEGSA(1)) @ READ THE DATA HEADER BLOCK ( COMMON CEGESA)\r | |
| 41 | IF (FILTER.EQ.0) GOTO 40 @ ONLY ONE FILTER SCAN ALLOWED\r | |
| 42 | WRITE (TTY,2) FILTER @ ' DATA SET ALREADY WITH N POINT FILTER SMOOTHED'\r | |
| 43 | RETURN\r | |
| 44 | 40 CONTINUE\r | |
| 45 | INCR2=INCR/2 @ NUMBER OF DATA POINTS IN POWER SPECTRUM\r | |
| 46 | C\r | |
| 47 | C HERE WE SCAN WITH A 3 POINT FILTER THE POWER SPECTRUM \r | |
| 48 | C\r | |
| 49 | C\r | |
| 50 | X1=0\r | |
| 51 | X2=0\r | |
| 52 | X3=0\r | |
| 53 | W=.FALSE.\r | |
| 54 | FFTMAX=0 @ CLEAR MAXIMUM FOR THE SCAN AND\r | |
| 55 | FFTMIN=5E55 @ LOAD THE MINIMUM\r | |
| 56 | DO 10 I=1,INCR2\r | |
| 57 | J=MOD(I-1,85)\r | |
| 58 | IF (J.NE.0) GOTO 15\r | |
| 59 | IF (W) WRITE (5'REC5) FFTX\r | |
| 60 | W=.FALSE.\r | |
| 61 | READ (5'REC5) FFTX\r | |
| 62 | REC5=REC5-1\r | |
| 63 | 15 CONTINUE\r | |
| 64 | X1=X2\r | |
| 65 | X2=X3\r | |
| 66 | X3=FFTX(J+1)\r | |
| 67 | FFTX(J+1)=.25*(X1+X3)+.5*X2\r | |
| 68 | W=.TRUE.\r | |
| 69 | FFTMIN=AMIN1(FFTMIN,FFTX(J+1)) @ FETCH THE MINIMUM OF THE POWER SPECTRUM\r | |
| 70 | FFTMAX=AMAX1(FFTMAX,FFTX(J+1)) @ FETCH THE MAXIMUM OF THE POWER SPECTRUM\r | |
| 71 | 10 CONTINUE\r | |
| 72 | IF (W) WRITE (5'REC5) FFTX\r | |
| 73 | C\r | |
| 74 | C HERE WE SCAN THE BAND INTENSITY\r | |
| 75 | C\r | |
| 76 | W=.FALSE.\r | |
| 77 | DO 30 BAND=1,5\r | |
| 78 | X1=0\r | |
| 79 | X2=0\r | |
| 80 | X3=0\r | |
| 81 | Y1=0\r | |
| 82 | Y2=0\r | |
| 83 | Y3=0\r | |
| 84 | DO 30 I=0,DATCNT-1\r | |
| 85 | PNT=MOD(I,4)+1\r | |
| 86 | IF (PNT.NE.1) GOTO 35\r | |
| 87 | IF (W) WRITE (5'REC5) INTE85\r | |
| 88 | W=.FALSE.\r | |
| 89 | REC5=STSCAN+I/4\r | |
| 90 | READ (5'REC5) INTE85\r | |
| 91 | REC5=REC5-1\r | |
| 92 | 35 X1=X2\r | |
| 93 | X2=X3\r | |
| 94 | X3=INTE(1,BAND,PNT)\r | |
| 95 | INTE(1,BAND,PNT)=.25*(X1+X3)+.5*X2\r | |
| 96 | W=.TRUE.\r | |
| 97 | Y1=Y2\r | |
| 98 | Y2=Y3\r | |
| 99 | Y3=INTE(4,BAND,PNT)\r | |
| 100 | INTE(4,BAND,PNT)=.25*(Y1+Y3)+.5*Y2\r | |
| 101 | 30 CONTINUE\r | |
| 102 | IF (W) WRITE (5'REC5) INTE85\r | |
| 103 | C INSERT THE NEW MIN/MAX INTO THE SECOND DATA HEADER BLOCK\r | |
| 104 | REC5=2 @ READ THE HEADER AGAIN\r | |
| 105 | XMINI=FFTMIN\r | |
| 106 | XMAXI=FFTMAX @ INSERT THE NEW MIN/MAX\r | |
| 107 | FILTER=3 @ 3 POINT FILTER \r | |
| 108 | WRITE (5'REC5) LCEGSA(1),(LCEGSA(I),I=2,LCEGSA(1)) @ WRITE THE DATA HEADER BLOCK ( COMMON CEGESA)\r | |
| 109 | RETURN\r | |
| 110 | C\r | |
| 111 | C\r | |
| 112 | C\r | |
| 113 | 20 CONTINUE @ FILE 5 IS EMPTY\r | |
| 114 | COMPUT=0\r | |
| 115 | SAMCNT=0\r | |
| 116 | WRITE (TTO,1) @ NO DATA FOUND\r | |
| 117 | RETURN\r | |
| 118 | C\r | |
| 119 | 1 FORMAT (' KEINE DATEN IN DER DATEI 5')\r | |
| 120 | 2 FORMAT (' LEISTUNGS SPECTRUM BEREITS MIT ',I3,' PUNKT FILTER',\r | |
| 121 | * 'GEGELAETET.')\r | |
| 122 | END\r | |
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