Results of testing flag handling for single missing point interpolations
Summary
The following are results obtained by preliminary tests on a development machine. For all runs ftime=1 is set for a
successful interpolation. The useflag settings are set by the kvalobs Qc1 library. The test cases are based on the first parts of the circulated document (QC2-d2_flagg_08_2010_v20.doc) as described further below.
Before
…
After
controlinfo
useinfo
controlinfo
useinfo
0000601000000000
9899900000000000
0000601100000000
5894700000000001
0000601000000000
9899700000000000
0000601100000000
5894700000000001
0000601000000000
9897700000000000
0000601100000000
5894700000000001
0000002000000000
9839900000000000
0000004100000000
6090900000000000
0000602000000000
9839900000000000
0000604100000000
5030700000000001
0000003000000000
9899900000000000
0000001100000000
6894900000000000
For the input control and useinfo it is not clear what all of the flag settings are likely to be. The above is based on one observed case “0000003000000000 9899900000000000” which is then further modified to include different fmis values as defined in the QC2-d2_flagg_08_2010_v20.doc specification. More work to be done here to identify improved test cases for trial on dev-vm101.
Details
Betingelse
QC2-d2 skal kun brukes for interpolering av manglende verdi og korrigering av forkastet verdi. Par = TA, TAN eller TAX. Par(t) mangler (for tidspunkt t).
For disse tilfellene er:
a) fmis=1, fnum=6, useinfo(2)=9 (manglende verdi erstattet av modellverdi) eller
b) fmis=2, fnum=0 / 6, useinfo(2)=3 (forkastet verdi ikke erstattet / erstattet av modellverdi)
c) fmis=3, fnum=0, useinfo(2)=9 (manglende original- og corrected-verdi)
Foreløpig prosedyre for igangsetting av QC2-d2
1. Sjekker at Par(t-1) og Par(t+1) begge er kontrollert og funnet OK.
- useinfo(2)=0, uansett hvilke kontroller som er kjørt.
2. Iverksetter beregning av algoritme.
- Par(t) = 0.5* [Par(t-1) + Par(t+1)]
- ftime=1 (det skjer ingen endring av useinfo(2))
- for a) beholdes fmis=1 og useinfo(3), useinfo(4) endres fra 7 til 9,
for b) settes fmis=4, useinfo(3) settes til 3 og useinfo(4) settes til 9.
for c) settes fmis=1, useinfo(3) settes til 4 og useinfo(4) settes til 9.
a) fmis=1, fnum=6, useinfo(2)=9 (manglende verdi erstattet av modellverdi)
for a) beholdes fmis=1 og useinfo(3), useinfo(4) endres fra 7 til 9,
Before
…
After
controlinfo
useinfo
controlinfo
useinfo
0000601000000000
9899900000000000
0000601100000000
5894700000000001
0000601000000000
9899700000000000
0000601100000000
5894700000000001
0000601000000000
9897700000000000
0000601100000000
5894700000000001
b) fmis=2, fnum=0 / 6, useinfo(2)=3 (forkastet verdi ikke erstattet / erstattet av modellverdi)
for b) settes fmis=4, useinfo(3) settes til 3 og useinfo(4) settes til 9.
Before
…
After
controlinfo
useinfo
controlinfo
useinfo
0000002000000000
9839900000000000
0000004100000000
6090900000000000
0000602000000000
9839900000000000
0000604100000000
5030700000000001
c) fmis=3, fnum=0, useinfo(2)=9 (manglende original- og corrected-verdi)
for c) settes fmis=1, useinfo(3) settes til 4 og useinfo(4) settes til 9.
Before
…
After
controlinfo
useinfo
controlinfo
useinfo
0000003000000000
9899900000000000
0000001100000000
6894900000000000
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