R 中具有数值的温度数据的栅格堆栈

Question

我想用 R 中的栅格数据做一些测试。我需要数值。但是 R 只显示整数。我怎样才能改变这个？任何的想法？提前致谢 :D

#libraries
    library(raster)
    library(rgdal)

    setwd("C:/Users/cathe/Documents/Cropped_raster")

    ## polygon with crop-extend ##
    shp <- readOGR("C:/Users/cathe/OneDrive/Documents/ArcGIS/Projects/CLC2000_shapefiles/CLC2000_Nichtdurchgängig städtische Prägung.shp")

    ## load tif files ##
    infiles = list.files(path=getwd(),
                     pattern="*.tif$|*.TIF$")


    ## Filenames with desired suffix and output place ##
    outfiles = file.path("C:/Users/cathe/Documents/Cropped_raster_nicht_durchgängig",
                     paste0(basename(tools::file_path_sans_ext(infiles)),
                            ".tif"))
    outfiles[outfiles == -9999] <- NA #alle -9999 auf NA setzen, wenn nötig



    ## crop and output settings (compression and datatype)
    for (i in seq_along(infiles)) {
      r = crop(stack(infiles[i]), shp)
      writeRaster(r, filename=outfiles[i],
              bylayer=FALSE,
              format="GTiff",
              datatype="numeric",
              options="COMPRESS=ZIP",
              x, NAflag=-9999,
              overwrite=TRUE)
    }

Answer 1

您的问题出在 writeRaster() 的 datatype 参数中。来自文档：

datatype: Character. Output data type (e.g. 'INT2S' or 'FLT4S'). See dataType. If no datatype is specified, 'FLT4S' is used, unless this default value was changed with rasterOptions

数字只存在于R世界。在外面你有整数和浮点数，你需要什么取决于你的数据。

R 中具有数值的温度数据的栅格堆栈

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