gsn_vector

Creates and draws a vector plot.

Prototype

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"

	function gsn_vector (
		wks  [1] : graphic,  
		u [*][*] : numeric,  
		v [*][*] : numeric,  
		res  [1] : logical   
	)

	return_val [1] :  graphic

Arguments

A Workstation identifier. The identifier is one returned either from calling gsn_open_wks or calling create to create a Workstation object.

The u and v data for the vector plot.

A variable containing an optional list of plot resources, attached as attributes. Set to True if you want the attached attributes to be applied, and False if you either don't have any resources to set, or you don't want the resources applied.

Return value

A scalar id of the vector plot created is returned. The id of the data object is also returned as an attribute called data. This is useful if you want to use setvalues to change some data options after this function has been called.

Description

This function creates and draws a vector plot on the given workstation.

If either u or v have a _FillValue attribute, these values will be used as missing values.

You should use gsn_csm_vector if you want a more customized vector plot and/or if your data has coordinate arrays.

See Also

gsn_vector_map

Examples

For some application examples, see:

• "meteo_1.ncl" (view example)

See also the suite of gsn_vector examples.