Differences

This shows you the differences between two versions of the page.

--- kvalobs:kvoss:system:qc2:user [2008-10-28 12:02:16]
paule created
+++ kvalobs:kvoss:system:qc2:user [2022-05-31 09:29:32] (current)
@@ Line 1: / Line 1: @@
-====== Qc2 User Guides & Manuals ======
+====== Qc2 User Guide ======
+**This documentation is mostly for the development version 1.3.1 of kvqc2d as of 2011-12-02.**
-  * [[.user:configuration|Configuration Files]]
+===== Configuration =====
+The configuration of Qc2 algorithms is done via configuration files in the folder ''/etc/kvalobs/Qc2Config''.
+To make it easy to switch between development an production version, the development configuration files have the extension ''.cfg2'',
+and the production configuration files the extension ''.cfg''. All other files are ignored.
+The new version checks tries to check if there is too much or too little configuration.
+Error messages about bad configuration files should appear as **ERROR** messages in the logfile ''/var/log/kvalobs/kvqc2d.log''.
+The configuration files may contain empty lines and comment lines, i.e. lines that start with a ''#'' as first non-whitespace character.
+Empty lines and comment lines are ignored.
+The other lines have the form ''option = value''.
+Options are case-sensitive.
+If the same option is repeated, a list of values is built, but this feature is not used for all parameters (most take only the first value) and also not checked.
+==== Flags and Flag Modification ====
+For the development version, the specification of [[kvalobs:kvalobs:kvalobs-flagg|flags]] and flag modifications has been changed and extended.
+One part of this is flag **matching**, the other flag **modification**.
+=== Flag Matching ===
+To specify flag matching, the following syntax is used:
+<code>
+# controlinfo fr must be 9 or fs must be one of A,B,C; there is no constraint on the other controlinfo or useinfo flags
+discarded_cflags = fr=9|fs=[ABC]
+# controlinfo(6)=fmis must be 0 and useinfo(0) must be 3 or 7 and useinfo(2) must 0; there is no constraint on the other controlinfo or useinfo flags
+neighbor_cflags    = ..._..0_..._..._
+neighbor_uflags    = [37].0_..._..._..._
+# same as above, but in text format
+neighbor_cflags    = fmis=0
+neighbor_uflags    = U0=[37]&U2=0
+# fmis may not be 7,8 or 9
+neighbor_cflags    = fmis=)789(
+# controlinfo must have either fmis=0 and fhqc=0 or fmis=1 and fhqc=A; no constraint on useinfo
+missing_cflags = fmis=0&fhqc=0|fmis=1&fhqc=A
+</code>
+The characters ''.'' and ''_'' match any flag and can be used interchangeably.
+If using the non-textual specification, it is recommended to use a ''_'' for every fourth flag wildcard and ''.'' for all other wildcards to make it easier to read the specification on screen and paper.
+=== Flag Modification ===
+Flag modification consists of an optional matching part like above and a modification part. Both apply only to controlinfo flags.
+<code>
+# set ftime=1 unconditionally; if fmis=3, set fmis=1; if fmis=0 or 2, set fmis=4
+update_flagchange  = ..._...1..._..._;..._..3_..._..._->..._..1_..._..._;..._..[02]_..._..._->..._..4_..._..._
+# if fmis=1, set fmis=3; if fmis=4, set fs=9
+missing_flagchange = fmis=1->fmis=3;fmis=4->fs=9
+# set fs=8 and fmis=2
+highstart_flagchange = fs=8,fmis=2
+</code>
+The changes are applied in the order they are specified if the respective constraint is met.
+If multiple changes are specified, the constraints of the later are checked against the flags already modified by the previous change specifications.
+==== Scheduling ====
+Scheduling of the algorithm is done via the //options//:
+  * ''RunAtHour'' specifies the hour of the day at which the algorithm should run. The special value ''-1'' means that the algorithm shall run hourly
+  * ''RunAtMinute'' specifies the minute at which the algorithm should run.
+If algorithms are scheduled so that one runs so long that other algorithm's scheduled start times fall during the running time of the former,
+then the //delayed// algorithms are run in the same order as originally specified after the long-running algorithm finished.
+If several algorithms are scheduled for the same time, the order in which they are run is undefined.
+See also [[.user:qc2_schedule|Qc2 Schedule]].
+==== Common Configuration ====
+A few options are common to all algorithms.
+These have default values and are not likely to be inserted in the configuration file.
+  * ''CFAILED_STRING'' an extra comment added to ''cfailed'' for any modified row (default: empty, no extra comment)
+  * ''missing'' special value indicating a missing value (default: -32767.0)
+  * ''rejected'' special value indicating a rejected value (default: -32766.0)
+==== Time Range Configuration ====
+The first and last observation times for which an algorithm shall run is specified with:
+    * either ''Start_YYYY'', ''Start_MM'', ''Start_DD'', ''Start_hh'', ''Start_mm'', ''Start_ss'' and ''End_YYYY'', ''End_MM'', ''End_DD'', ''End_hh'', ''End_mm'', ''End_ss''
+    * or with ''Last_NDays = //d//'' which takes the present time (not the scheduled time!) and sets seconds and minutes to 0 to obtain the end time; then, ''//d//'' days are subtracted to obtain the start time. It is also possible to set ''Start_hh'' and ''Start_mm'' here, for example for data expected at 06:00.
+==== Algorithm Choice and Configuration ====
+The algorithm to run is defined by the ''Algorithm'' option.
+The following algorithms are known, and links are given the their respective descriptions.
+  * ''DipTest'' checks for double jumps in the data, see [[kvalobs:kvoss:system:qc2:requirements:algorithms:diptest03|description]]
+  * ''SingleLinear'' checks for single missing values, see [[kvalobs:kvoss:system:qc2:requirements:algorithms:singlelinear|description]]
+  * ''Redistribute'' redistributes accumulated precipitation based on neighbor station data, see [[kvalobs:kvoss:system:qc2:requirements:algorithms:rarr_24|description]]
+  * ''Plumatic'' checks 1-minute data from //vippepluviometer//, see [[kvalobs:kvoss:system:qc2:requirements:algorithms:plumatic|description]]
+===== Links =====
+  * [[.user:configuration|Old configuration description]]
+  * [[.user:config_summary|Summary of all Configuration Options]]
+  * [[.user:interpolation|Interpolation Configuration]]
+  * [[.user:algorithms|Algorithm Configuration]]
+  * [[.user:installation|Installation]] (old)
+  * [[.user:run|Running Qc2]] (old)
+  * [[.user:version|Version Details]]
+  * [[kvalobs:kvoss:system:qc2|QC2 System Root Page]]