我刚从WRF建模中生成了一个大的netcdf文件。该文件有143个变量，122个全局属性和9个维度。它涵盖了7天的时间段，时间步长为6小时。我想做的就是在第一天（前4个步骤）切出并丢弃所有内容并保留其余文件。我在transNcdfCutFiles包中搜索了ncdf.tools函数，但对如何正确使用它感到有些困惑。
我是R的NetCDF处理新手。非常感谢任何建议或帮助！
我无法附加文件，因为它非常大，但这里是一个变量列表。提前谢谢。
names(ncin$var)
[1] "Times" "XLAT"
[3] "XLONG" "LU_INDEX"
[5] "ZNU" "ZNW"
[7] "ZS" "DZS"
[9] "VAR_SSO" "U"
[11] "V" "W"
[13] "PH" "PHB"
[15] "T" "HFX_FORCE"
[17] "LH_FORCE" "TSK_FORCE"
[19] "HFX_FORCE_TEND" "LH_FORCE_TEND"
[21] "TSK_FORCE_TEND" "MU"
[23] "MUB" "NEST_POS"
[25] "P" "PB"
[27] "FNM" "FNP"
[29] "RDNW" "RDN"
[31] "DNW" "DN"
[33] "CFN" "CFN1"
[35] "THIS_IS_AN_IDEAL_RUN" "P_HYD"
[37] "Q2" "T2"
[39] "TH2" "PSFC"
[41] "U10" "V10"
[43] "RDX" "RDY"
[45] "RESM" "ZETATOP"
[47] "CF1" "CF2"
[49] "CF3" "ITIMESTEP"
[51] "XTIME" "QVAPOR"
[53] "QCLOUD" "QRAIN"
[55] "SHDMAX" "SHDMIN"
[57] "SNOALB" "TSLB"
[59] "SMOIS" "SH2O"
[61] "SMCREL" "SEAICE"
[63] "XICEM" "SFROFF"
[65] "UDROFF" "IVGTYP"
[67] "ISLTYP" "VEGFRA"
[69] "GRDFLX" "ACGRDFLX"
[71] "ACSNOM" "SNOW"
[73] "SNOWH" "CANWAT"
[75] "SSTSK" "COSZEN"
[77] "LAI" "VAR"
[79] "MAPFAC_M" "MAPFAC_U"
[81] "MAPFAC_V" "MAPFAC_MX"
[83] "MAPFAC_MY" "MAPFAC_UX"
[85] "MAPFAC_UY" "MAPFAC_VX"
[87] "MF_VX_INV" "MAPFAC_VY"
[89] "F" "E"
[91] "SINALPHA" "COSALPHA"
[93] "HGT" "TSK"
[95] "P_TOP" "T00"
[97] "P00" "TLP"
[99] "TISO" "TLP_STRAT"
[101] "P_STRAT" "MAX_MSTFX"
[103] "MAX_MSTFY" "RAINC"
[105] "RAINSH" "RAINNC"
[107] "SNOWNC" "GRAUPELNC"
[109] "HAILNC" "CLDFRA"
[111] "SWDOWN" "GLW"
[113] "SWNORM" "OLR"
[115] "XLAT_U" "XLONG_U"
[117] "XLAT_V" "XLONG_V"
[119] "ALBEDO" "CLAT"
[121] "ALBBCK" "EMISS"
[123] "NOAHRES" "TMN"
[125] "XLAND" "UST"
[127] "PBLH" "HFX"
[129] "QFX" "LH"
[131] "ACHFX" "ACLHF"
[133] "SNOWC" "SR"
[135] "SAVE_TOPO_FROM_REAL" "HFX_FDDA"
[137] "ISEEDARR_RAND_PERTURB" "ISEEDARR_SPPT"
[139] "ISEEDARR_SKEBS" "LANDMASK"
[141] "LAKEMASK" "SST"
[143] "SST_INPUT"
答案 0 :(得分：0)
使用cdo命令行更容易做到：
cdo seltimestep,5/nsteps ifile ofile
其中nsteps是文件中的时间步数。