如何解决R中的runGdal的MODIS数据下载问题
我正在尝试使用以下功能下载一些MODIS数据,该错误如下:
ndvi.evi <- runGdal("MOD13Q1",collection = "006",tileH = 20,tileV = 11,begin = start,end = end,SDSstring = "111000000010",job = "NDVI.EVI",outProj="asIn")
Error in runGdal("MOD13Q1",:
GDAL not installed or configured,read in '?MODISoptions' for help
运行MODISoptions()时,我得到以下信息:
> MODISoptions()
STORAGE:
_______________
localArcPath : /private/var/folders/90/qjm_6mxd1wg1f971j9t5n86c0000gp/T/Rtmpa6n6oR/MODIS_ARC
outDirPath : /Users/u1418987/Documents
DOWNLOAD:
_______________
MODISserverOrder : LAADS,LPDAAC
dlmethod : auto
stubbornness : high
wait : 0.5
quiet : FALSE
PROCESSING:
_______________
GDAL : Not available. Use 'MODIS:::checkTools('GDAL')' for more information!
MRT : Enabled
pixelSize : asIn
outProj : asIn
resamplingType : NN
dataFormat : GTiff
cellchunk : 1
但是,当我运行MODIS ::: checkTools('GDAL')时,似乎可以找到Gdal:
> MODIS:::checkTools('GDAL')
Checking availability of GDAL:
OK,GDAL 2.4.2 found!
我看了以下论坛帖子,即使我成功地遵循了它,也无法使它起作用:
https://gis.stackexchange.com/questions/183230/gdal-not-available-in-modis-r-package
> Sys.getenv("PATH")
[1] "/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Applications/RStudio.app/Contents/MacOS/postback:/Library/Frameworks/GDAL.framework/Versions/2.4/Programs"
任何建议或解决方案将不胜感激。预先感谢。
编辑:当我运行MODIS ::: checkTools()时,我得到以下信息:
> MODIS:::checkTools()
Checking availability of MRT:
'MRT_HOME' not set/found! MRT is NOT enabled! See: 'https://lpdaac.usgs.gov/tools/modis_reprojection_tool'
Checking availability of GDAL:
OK,GDAL 2.4.2 found!
sh: wget: command not found
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