extractVNC4: Extract Values for Point from NC4 Image

In lspatial/sptemUS: Constrained Spatiotemporal Mixed-Effect Models for Exposure Estimation of Air Pollutants

Description

A program to extarct the values from the NC4 image by overlaying the subject locations.

Usage

extractVNC4(tarshp, ncin, bandVar, prj)

Arguments

tarshp	The point objects, format: SpatialPointDataFrame
ncin	the nc4 object by nc_open.
bandVar	The band name to be used for extration from the NC4 file
prj	The project information, default: NA

Details

This function can be used to extract values from the NC4 images (such as satellite images)

Value

The values extracted in the same sequence with the point object. Format: vector

Author(s)

Lianfa Li, [e-mail]

References

http://disc.sci.gsfc.nasa.gov/daac-bin/FTPSubset2.pl)

Examples

data("samplepnt")
nc4File=""
ncin0=ncdf4::nc_open(nc4File)
extRes=extractVNC4(samplepnt,ncin0,"TLML")
extRes

lspatial/sptemUS documentation built on May 29, 2019, 3:42 a.m.