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Table of contents
Procedure
DASRDI ( DAS, read data, integer )
SUBROUTINE DASRDI ( HANDLE, FIRST, LAST, DATA )
Abstract
Read integer data from a range of DAS logical addresses.
Required_Reading
DAS
Keywords
ARRAY
ASSIGNMENT
DAS
FILES
Declarations
IMPLICIT NONE
INTEGER HANDLE
INTEGER FIRST
INTEGER LAST
INTEGER DATA ( * )
Brief_I/O
VARIABLE I/O DESCRIPTION
-------- --- --------------------------------------------------
HANDLE I DAS file handle.
FIRST,
LAST I Bounds of range of DAS integer logical addresses.
DATA O Data having addresses FIRST through LAST.
Detailed_Input
HANDLE is a file handle for an open DAS file.
FIRST,
LAST are the lower and upper bounds of a range of DAS integer
logical addresses. The range includes these bounds. FIRST
and LAST must be greater than or equal to 1 and less than
or equal to the highest integer DAS address in the DAS
file designated by HANDLE.
Detailed_Output
DATA is an array of integers. DATA should have length
at least LAST - FIRST + 1.
Parameters
None.
Exceptions
1) If the input file handle is invalid, an error is signaled
by a routine in the call tree of this routine. DATA will
not be modified.
2) If FIRST or LAST are out of range, an error is signaled
by a routine in the call tree of this routine.
3) If FIRST is greater than LAST, DATA is left unchanged.
4) If DATA is declared with length less than FIRST - LAST + 1,
the error cannot be diagnosed by this routine.
5) If a file read error occurs, the error is signaled by a
routine in the call tree of this routine.
Files
See the description of the argument HANDLE in $Detailed_Input.
Particulars
This routine provides random read access to the integer data in
a DAS file. This data are logically structured as a
one-dimensional array of integers.
Examples
The numerical results shown for this example may differ across
platforms. The results depend on the SPICE kernels used as
input, the compiler and supporting libraries, and the machine
specific arithmetic implementation.
1) Create a new DAS file and add 200 integers to it. Close the
file, then re-open it and read the data back out.
Example code begins here.
PROGRAM DASRDI_EX1
IMPLICIT NONE
C
C Local parameters.
C
CHARACTER*(*) FNAME
PARAMETER ( FNAME = 'dasrdi_ex1.das' )
CHARACTER*(*) TYPE
PARAMETER ( TYPE = 'TEST' )
C
C Local variables.
C
INTEGER DATA ( 200 )
INTEGER HANDLE
INTEGER I
INTEGER J
C
C Open a new DAS file. Use the file name as the internal
C file name, and reserve no records for comments.
C
CALL DASONW ( FNAME, TYPE, FNAME, 0, HANDLE )
C
C Fill the array DATA with the integers 1 through
C 100, and add this array to the file.
C
DO I = 1, 100
DATA(I) = I
END DO
CALL DASADI ( HANDLE, 100, DATA )
C
C Now append the array DATA to the file again.
C
CALL DASADI ( HANDLE, 100, DATA )
C
C Close the file.
C
CALL DASCLS ( HANDLE )
C
C Now verify the addition of data by opening the
C file for read access and retrieving the data.
C
CALL DASOPR ( FNAME, HANDLE )
CALL DASRDI ( HANDLE, 1, 200, DATA )
C
C Dump the data to the screen. We should see the
C sequence 1, 2, ..., 100, 1, 2, ... , 100.
C
WRITE (*,*)
WRITE (*,*) 'Data from "', FNAME, '":'
WRITE (*,*)
DO I = 1, 20
WRITE (*,'(10I5)') (DATA((I-1)*10+J), J = 1, 10)
END DO
C
C Close the file.
C
CALL DASCLS ( HANDLE )
END
When this program was executed on a Mac/Intel/gfortran/64-bit
platform, the output was:
Data from "dasrdi_ex1.das":
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
Note that after run completion, a new DAS file exists in the
output directory.
Restrictions
None.
Literature_References
None.
Author_and_Institution
N.J. Bachman (JPL)
J. Diaz del Rio (ODC Space)
K.R. Gehringer (JPL)
W.L. Taber (JPL)
Version
SPICELIB Version 1.3.0, 09-OCT-2021 (JDR) (NJB)
Added IMPLICIT NONE statement.
Added FAILED call following DASA2L call.
Updated entries in $Revisions section.
Edited the header to comply with NAIF standard. Fixed
bugs in the code example and modified the output presentation
to comply with the maximum line length for header comments.
Added entry #5 to $Exceptions section.
SPICELIB Version 1.2.1, 19-DEC-1995 (NJB)
Corrected title of permuted index entry section.
SPICELIB Version 1.2.0, 30-OCT-1995 (NJB)
Routine now uses discovery check-in. FAILED test moved inside
loop.
SPICELIB Version 1.1.0, 12-MAY-1994 (KRG) (NJB)
Test of FAILED() added to loop termination condition.
Removed references to specific DAS file open routines in the
$Detailed_Input section of the header. This was done in order
to minimize documentation changes if the DAS open routines ever
change.
Modified the $Examples section to demonstrate the new ID word
format which includes a file type and to include a call to the
new routine DASONW, open new for write, which makes use of the
file type. Also, a variable for the type of the file to be
created was added.
SPICELIB Version 1.0.0, 13-JUN-1992 (NJB) (WLT)
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Fri Dec 31 18:36:11 2021