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Extracts the longitudes of all the geopoints and returns them as a vector.
Anchor max max Anchor min min
geopoints max ( geopoints,geopoints )
geopoints min ( geopoints,geopoints )
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Returns the maximum (minimum) value of all geopoints values. Missing values are bypassed in this calculation. If there are no valid values, then nil is returned.
Anchor mean mean
number mean ( geopoints )
Computes the mean of the geopoints. Missing values are bypassed in this calculation. If there are no valid values, then nil is returned.
Anchor nearest_gridpoint nearest_gridpoint
geopoints nearest_gridpoint ( fieldset,geopoints )
Generates a set of geopoints from a field. The first field of the input fieldset is used. The result is a set of geopoints whose locations are from the original geopoints, but whose values are those of the nearest gridpoints in the field to the geopoints given as a second parameter. Where it is not possible to generate a sensible value due to lack of valid data in the fieldset, the internal geopoints missing value is used (this value can be checked for with the built-in variable geo_missing_value or removed with the function remove_missing_values).
Anchor offset offset
geopoints offset ( geopoints,number,number )
geopoints offset ( geopoints,list)
Modifies the locations of a set of geopoints by specified amounts. The offsets can be specified either as two separate numbers or as a 2-element list. The original geopoints variable is unaffected; the functions return a new variable.
Anchor polar_vector polar_vector
geopoints polar_vector ( geopoints, geopoints )
Combines two single-parameter geopoints variables into a polar vector style geopoints variable. The first represents speed, the second represents direction. Both input geopoints variables should contain the same number of points.
Anchor remove_duplicates remove_duplicates
geopoints remove_duplicates ( geopoints )
Returns a new geopoints variable that contains just one instance of any duplicate geopoint. Two geopoints are considered to be duplicates of each other if the files have the same format and the points have the same coordinates, height, date, time and values.
Anchor remove_missing_values remove_missing_values
geopoints remove_missing_values ( geopoints )
Returns a new geopoints variable that contains just the non-missing values from the input geopoints variable. A geopoint is considered to be missing if either its value or value2 members are missing.
Anchor set_latitudes set_latitudes
geopoints geopoints set_latitudes ( geopoints, number or vector or list )
geopoints set_longitudes ( geopoints, number or vector or list )
geopoints set_levels ( geopoints, number or vector or list )
geopoints set_dates ( geopoints, number or vector or list )
geopoints set_stnids ( geopoints, list )
geopoints set_times ( geopoints, number or vector or list )set_values ( geopoints, number or vector or list )
geopoints set_values ( geopoints, number or string, number or vector or list )
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| Code Block | ||
|---|---|---|
| ||
gpt['latitude'] = |30, 40, 50| gpt['value'] = |12.4, 13.3, 1.1| gpt[name_of_column_4] = |3.3, 4.4, 5.5| gpt['precip'] = |0.3, 0.2, 0.1| |
Anchor stnids stnids
list stnids ( geopoints )
Extracts the station id strings from all the geopoints and returns them as a list.
Anchor subsample subsample
geopoints subsample ( geopoints, geopoints )
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You can use function remove_missing_values() if you need to get rid of the missing valued points in the returned geopoints variable.
Anchor sum sum
number sum ( geopoints )
Computes the sum of the geopoints. Missing values are bypassed in this calculation. If there are no valid values, then nil is returned.
Anchor values values
vector or list values ( geopoints )
vector or list values ( geopoints, number )
vector or list values ( geopoints, string )
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