我正在处理来自加拿大环境部的数据
我download.file()
用来获取这些数据。当我使用:
download.file(url="http://dd.weather.gc.ca/model_gem_global/25km/grib2/lat_lon/00/000/CMC_glb_VGRD_ISBL_1000_latlon.24x.24_2015091100_P000.grib2",destfile = "Local_Grib.grib2")
GribInfo(grib.file = "Local_File.grib2",file.type = "grib2")
它产生:
$inventory
[1] "" "*** FATAL ERROR: rd_grib2_msg, missing end section ('7777') ***"
[3] ""
attr(,"status")
[1] 8
$grid
[1] "" "*** FATAL ERROR: rd_grib2_msg, missing end section ('7777') ***"
[3] ""
attr(,"status")
[1] 8
Warning messages:
1: running command 'wgrib2 Local_File.grib2 -inv -' had status 8
2: running command 'wgrib2 Local_File.grib2 -grid' had status 8
虽然手动下载,然后是:
GribInfo(grib.file = "CMC_glb_TMP_ISBL_985_latlon.24x.24_2015091100_P000.grib2",file.type = "grib2")
产量:
$inventory
[1] "1:0:d=2015091100:TMP:985 mb:anl:"
$grid
[1] "1:0:grid_template=0:winds(N/S):" "\tlat-lon grid:(1500 x 751) units 1e-06 input WE:SN output WE:SN res 48"
[3] "\tlat -90.000000 to 90.000000 by 0.240000" "\tlon 180.000000 to 179.760000 by 0.240000 #points=1126500"
我曾尝试在其中使用 Curl 和 Wget 方法,download.file()
但是它们未能给出非退出错误。我可以使用 wget 批处理文件获取这些文件,但是,为了一致性和易用性,我希望我的整个系统在 R 中运行。