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Specifies the input data, which must be in Geopoints format (e.g. a geopoints data icon or an Observation Filter icon returning geopoints)
If set to User, the output grid will be a regular lat/lon matrix defined by the parameters Area and Grid; if set to Grib, an example GRIB file should be specified by the parameter Template Grib.
Specifies a geographical area over which to carry out the interpolation, the default being for the whole globe. Enter coordinates (lat/lon) of an area separated by a "/" (top left lat and lon, bottom right lat and lon); alternatively, use the assist button to define the area graphically. Only available if Grib Definition Mode is User.
Specifies a resolution in degrees, thus together with Area, determining the limits and density of the regular grid for interpolation of the point data values. Enter the longitude and latitude resolution as numbers separated by a "/". Only available if Grib Definition Mode is User.
Specifies a GRIB file on which to base the output GRIB. The resulting GRIB field will be a copy of the template, with the values and parameter identifier modified.
Specifies a neighbourhood in degrees around each grid point. All geopoints data within this neighbourhood are used to interpolate the value at the central grid point. E.g. if Tolerance is 2 then all geopoints within a +/-2 degrees square around the grid point are used.
If your geopoints data has high spatial density then you can afford to specify a short neighbourhood, if the density is sparse you should use a wide neighbourhood. Remember that the wider the neighbourhood the smoother the resulting interpolated field (and the slower the computation).
Specifies how the values of the geopoints within the window around a resulting grid point will be combined to produce the resulting value. The available algorithms are:
Exponential Mean: computes the mean of the values weighted (multiplied) by the following:
if Tolerance is not zero:
e^{-distance/tolerance^2} |
If not set to 255, then the paramId GRIB_API key on the output field will be set to this value.
If Parameter is not set to 255, then the table2Version GRIB_API key on the output field will be set to this value.