find

find(fs, value[, area_or_mask])
find(fs, range[, area_or_mask])

Returns a list of locations (lat/lon pairs) where the values of fs equal to or within the range of value_or_range.

Parameters

  • fs (Fieldset) – input fieldset

  • value (number) – the value defining the search condition

  • range (list) – the range defining the search condition

  • area_or_mask (list or Fieldset) – area or mask field restricting the search

Return type

list of lists

The primary search condition is defined by value or range:

  • if value is specified the locations where fs equals to this number are returned

  • if range is specified as a list of [v1, v2] the locations where fs values are within the closed range of [v1, v2] are returned

The optional area_or_mask argument can pose an additional search condition:

  • if area_or_mask is a list of four numbers it defines the area as [North,West,South,East] for the search

  • if area_or_mask is a Fieldset with one field it defines a mask for the search, e.i. only those gridpoints are checked where the mask value is non-zero.

Missing values in fs are not returned.

Notebooks using metview.find

thumbnail

Analysing data (GRIB)