如何从连续5天创建每周复合

时间:2015-04-15 00:23:29

标签: r composite rastervis

我在印度尼西亚水中有一个含有4维度(lon,lat,深度和时间)的盐度的NetCDF文件。如何从我的数据创建每周复合创建 在此处下载数据:https://onedrive.live.com/redir?resid=6FFDD661570C7D0A%21177 输出地图:https://onedrive.live.com/redir?resid=6FFDD661570C7D0A%21176

我想将栅格转换为矢量并使用apply来获取均值,但是我有问题使用rasterVis

绘制矢量数据

1 个答案:

答案 0 :(得分:0)

用你的例子,也不是很复杂:

# load needed librairies
library(rasterVis)

# open the data
salinity <- brick("data.nc", varname = "salinity")

salinity
# class       : RasterBrick 
# dimensions  : 61, 61, 3721, 5  (nrow, ncol, ncell, nlayers)
# resolution  : 0.08333333, 0.08333333  (x, y)
# extent      : 104.9583, 110.0417, -5.041667, 0.04166667  (xmin, xmax, ymin, ymax)
# coord. ref. : +proj=longlat +datum=WGS84 
# data source : data.nc 
# names       : X252331200, X252417600, X252504000, X252590400, X252676800 
# z-value     : 252331200, 252417600, 252504000, 252590400, 252676800 
# varname     : salinity 
# level       : 1 

# Calculate the mean
m.salinity <- mean(salinity)

m.salinity

# class       : RasterLayer 
# dimensions  : 61, 61, 3721  (nrow, ncol, ncell)
# resolution  : 0.08333333, 0.08333333  (x, y)
# extent      : 104.9583, 110.0417, -5.041667, 0.04166667  (xmin, xmax, ymin, ymax)
# coord. ref. : +proj=longlat +datum=WGS84 
# data source : in memory
# names       : layer 
# values      : 18.85652, 31.84299  (min, max)

enter image description here