get_npp_vgpm: get_npp_vgpm

In chaoxv/nppr: Tools for Ocean Productivity Data Downloading, Reading, Processing and Visualization

get_npp_vgpm

Description

get_npp_vgpm() is used for automatically downloadiing, decompressing and renaming ocean net primary production data of VGPM model by custom grid size, time span and satellite.

Usage

get_npp_vgpm(
  file.path,
  grid.size = "low",
  time.span = "monthly",
  file.format = "hdf",
  satellite = "MODIS",
  mindate,
  maxdate
)

Arguments

file.path	The folder(an empty folder) path where your want to save your file (avoid Chinese characters).
grid.size	The grid size that you choose. There are two grid sizes can be choosed: 'low'(default): 2160x1080, 'high': 2160x4320.
time.span	The time span of npp data. There are two time spans: 'monthly' represent monthly npp data. 'dayly' represent 8 days data.
file.format	For VGPM model, there are two file formats can be choosed, 'xyz' and 'hdf'. For CBPM and CAFE, only 'hdf' format can be choosed.
satellite	Choose satellites, 'MODIS', 'VIIRS', and 'SeaWiFS'. The default is 'MODIS'.
mindate	The minimum date of data you want to download.
maxdate	The maximum date of data you want to download.

Value

download some files in your folder.

Note

units: mg C m^-2 d^-1

Author(s)

Chao Xu

Examples

## Not run: 
library(nppr)
library(RCurl)
library(XML)
library(R.utils)
library(tidyverse)
library(lubridate)
get_npp_vgpm(file.path = 'C:\\Users\\xucha\\Desktop\\DATA',
        mindate = '2016-02-04', maxdate ='2016-06-28')

## End(Not run)

chaoxv/nppr documentation built on Jan. 29, 2024, 1:37 p.m.