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Geopointset is the format used by Metview to combine a set of Geopoints variables into a single entity for ease of processing. Thus, a set of observations can be grouped in the same way that fields are grouped into a fieldset variable. For a full list and details of functions and operators on geopoints, see Geopointset Functions. |
Creating a geopointset
A geopointset can be created with the create_geo_set() function, which takes any number of geopoints variables as arguments, or none. Both geopoints and geopointset variables can be concatenated with a geopointset.
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gsetdiff_r1 = fc_fieldset_5 - gset_5a # gset_5a[n] is subtracted from fc_fieldset_5[n] gsetdiff_r2 = fc_fieldset_5 - gset_1c # gset_1c[1] is subtracted from each field |
Filtering a geopointset
Individual geopoints variables can contain meta-data - see Geopoints for details. To select only those geopoints variables with given meta-data, use the filter() function as described in Geopointset Functions.
The Geopointset file format
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#GEOPOINTSET #GEO # lat lon height date time value # Missing values represented by 3e+38 (not user-changeable) #DATA 69.6523 18.9057 0 20130512 0 100869.8625 63.4882 10.8795 0 20130512 0 100282.3392 63.5657 10.694 0 20130512 0 100241.1666 61.2928 5.0443 0 20130512 0 99852.18932 #GEO # lat lon height date time value # Missing values represented by 3e+38 (not user-changeable) #METADATA param=geopotential #DATA 60.82 23.5 0 20130512 600 101045.8 #GEO # lat lon height date time value # Missing values represented by 3e+38 (not user-changeable) #DATA 55.01 8.41 0 20130513 0 100949.1809 54.33 8.662 0 20130513 0 101027.9101 53.71 7.15 0 20130513 0 100846.619 |
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