• GIS学习笔记(四)


    //先一个一个的来
    Arc: &run srtmgrid.aml n39e114.hgt n39e114
    Copyright (C) 1982-2006 Environmental Systems Research Institute, Inc.
    All rights reserved.
    GRID 9.2 (Sun Sep 17 16:05:34 PDT 2006)

    Reading n39e114.hgt as 3-arc-second DEM ...
    Copying image file ...
    Image parameters:

    BYTEORDER M
    LAYOUT BIL
    NROWS 1201
    NCOLS 1201
    NBITS 16
    ULXMAP 114
    ULYMAP 40
    XDIM 0.0008333333333
    YDIM 0.0008333333333

    Converting Image to Grid ...
    Running... 100%
    Define Projection
    Local:    ST                                0
    Local:    CH                                1
                              Description of Grid N39E114

    Cell Size =            0.000833         Data Type:                   Integer
    Number of Rows    =        1201           Number of Values =            2422
    Number of Columns =        1201           Attribute Data (bytes) =         8

               BOUNDARY                                STATISTICS

    Xmin =               113.999583         Minimum Value =           220.000000
    Xmax =               115.000417         Maximum Value =          2729.000000
    Ymin =                38.999583         Mean          =          1163.222439
    Ymax =                40.000417         Standard Deviation =      360.877811

                              COORDINATE SYSTEM DESCRIPTION

    Projection           GEOGRAPHIC
    Datum                     WGS84
    Zunits                   METERS
    Units                        DD             Spheroid                  WGS84
    Parameters:

    Killed XX00000G with the ALL option
    Processing completed.
    Grid: quit
    Leaving GRID...
    Arc: lg
     Workspace:        D:\GISECO2010\LECTURE2\EXCISE02

     Available GRIDs
     -------------------
      LAODEM15          LAODEM15W         N39E114
    Arc: describe n39e119
    Geo-dataset n39e119 does not exist or is not readable
    Arc: describe n39e114
                              Description of Grid n39e114

    Cell Size =               0.001         Data Type:                   Integer
    Number of Rows    =        1201           Number of Values =            2422
    Number of Columns =        1201           Attribute Data (bytes) =         8

               BOUNDARY                                STATISTICS

    Xmin =                  114.000         Minimum Value =              220.000
    Xmax =                  115.000         Maximum Value =             2729.000
    Ymin =                   39.000         Mean          =             1163.222
    Ymax =                   40.000         Standard Deviation =         360.878

                              COORDINATE SYSTEM DESCRIPTION

    Projection           GEOGRAPHIC
    Datum                     WGS84
    Zunits                   METERS
    Units                        DD             Spheroid                  WGS84
    Parameters:
    Arc: &run srtmgrid.aml n39e115.hgt n39e115
    Copyright (C) 1982-2006 Environmental Systems Research Institute, Inc.
    All rights reserved.
    GRID 9.2 (Sun Sep 17 16:05:34 PDT 2006)

    Reading n39e115.hgt as 3-arc-second DEM ...
    Copying image file ...
    Image parameters:

    BYTEORDER M
    LAYOUT BIL
    NROWS 1201
    NCOLS 1201
    NBITS 16
    ULXMAP 115
    ULYMAP 40
    XDIM 0.0008333333333
    YDIM 0.0008333333333

    Converting Image to Grid ...
    Running... 100%
    Define Projection
    Local:    ST                                0
    Local:    CH                                1
                              Description of Grid N39E115

    Cell Size =            0.000833         Data Type:                   Integer
    Number of Rows    =        1201           Number of Values =            2789
    Number of Columns =        1201           Attribute Data (bytes) =         8

               BOUNDARY                                STATISTICS

    Xmin =               114.999583         Minimum Value =             4.000000
    Xmax =               116.000417         Maximum Value =          2836.000000
    Ymin =                38.999583         Mean          =           466.910157
    Ymax =                40.000417         Standard Deviation =      467.708517

                              COORDINATE SYSTEM DESCRIPTION

    Projection           GEOGRAPHIC
    Datum                     WGS84
    Zunits                   METERS
    Units                        DD             Spheroid                  WGS84
    Parameters:

    Killed XX00000G with the ALL option
    Processing completed.
    Grid: q
    Leaving GRID...
    Arc: lg
     Workspace:        D:\GISECO2010\LECTURE2\EXCISE02

     Available GRIDs
     -------------------
      LAODEM15          LAODEM15W         N39E114           N39E115
    Arc: grid
    Copyright (C) 1982-2006 Environmental Systems Research Institute, Inc.
    All rights reserved.
    GRID 9.2 (Sun Sep 17 16:05:34 PDT 2006)

    Grid: bjdem = mosaic(n39e114,n39115)            
    Unable to open input grid(s)
    Grid: bjdem = mosaic(n39e114,n39e115)                    //把多个图像,grid文件拼在一起
    Mosaicing grids ... 100%
    Grid: quit
    Leaving GRID...
    Arc: lg
     Workspace:        D:\GISECO2010\LECTURE2\EXCISE02

     Available GRIDs
     -------------------
      BJDEM             LAODEM15          LAODEM15W         N39E114
      N39E115

    Arc: kill n39e114 all
    Killed n39e114 with the ALL option
    Arc: kill n39e115 all
    Killed n39e115 with the ALL option

    //写个有两个run srtmgrid.aml命令的bat.aml,可以两个一起来了,可以理解,像编程的思想
    Arc: &run bat.aml
    Copyright (C) 1982-2006 Environmental Systems Research Institute, Inc.
    All rights reserved.
    GRID 9.2 (Sun Sep 17 16:05:34 PDT 2006)

    Reading n39e114.hgt as 3-arc-second DEM ...
    Copying image file ...
    Image parameters:

    BYTEORDER M
    LAYOUT BIL
    NROWS 1201
    NCOLS 1201
    NBITS 16
    ULXMAP 114
    ULYMAP 40
    XDIM 0.0008333333333
    YDIM 0.0008333333333

    Converting Image to Grid ...
    Running... 100%
    Define Projection
    Local:    ST                                0
    Local:    CH                                1
                              Description of Grid N39E114

    Cell Size =            0.000833         Data Type:                   Integer
    Number of Rows    =        1201           Number of Values =            2422
    Number of Columns =        1201           Attribute Data (bytes) =         8

               BOUNDARY                                STATISTICS

    Xmin =               113.999583         Minimum Value =           220.000000
    Xmax =               115.000417         Maximum Value =          2729.000000
    Ymin =                38.999583         Mean          =          1163.222439
    Ymax =                40.000417         Standard Deviation =      360.877811

                              COORDINATE SYSTEM DESCRIPTION

    Projection           GEOGRAPHIC
    Datum                     WGS84
    Zunits                   METERS
    Units                        DD             Spheroid                  WGS84
    Parameters:

    Killed XX00000G with the ALL option
    Processing completed.
    Reading n39e115.hgt as 3-arc-second DEM ...
    Copying image file ...
    Image parameters:

    BYTEORDER M
    LAYOUT BIL
    NROWS 1201
    NCOLS 1201
    NBITS 16
    ULXMAP 115
    ULYMAP 40
    XDIM 0.0008333333333
    YDIM 0.0008333333333

    Converting Image to Grid ...
    Running... 100%
    Define Projection
    Local:    ST                                0
    Local:    CH                                1
                              Description of Grid N39E115

    Cell Size =            0.000833         Data Type:                   Integer
    Number of Rows    =        1201           Number of Values =            2789
    Number of Columns =        1201           Attribute Data (bytes) =         8

               BOUNDARY                                STATISTICS

    Xmin =               114.999583         Minimum Value =             4.000000
    Xmax =               116.000417         Maximum Value =          2836.000000
    Ymin =                38.999583         Mean          =           466.910157
    Ymax =                40.000417         Standard Deviation =      467.708517

                              COORDINATE SYSTEM DESCRIPTION

    Projection           GEOGRAPHIC
    Datum                     WGS84
    Zunits                   METERS
    Units                        DD             Spheroid                  WGS84
    Parameters:

    Killed XX00000G with the ALL option
    Processing completed.
    Grid: lg
     Workspace:        D:\GISECO2010\LECTURE2\EXCISE02

     Available GRIDs
     -------------------
      BJDEM             LAODEM15          LAODEM15W         N39E114
      N39E115
    Grid: q
    Leaving GRID...
    Arc: grid
    Copyright (C) 1982-2006 Environmental Systems Research Institute, Inc.
    All rights reserved.
    GRID 9.2 (Sun Sep 17 16:05:34 PDT 2006)

    Grid: basin
    Usage:  (I) BASIN (<dir_grid>)

    //下面的命令都在subwatershed.aml中,是提取小流域命令集
    Grid: fill
      Usage: FILL <in_grid> <out_grid> {SINK | PEAK} {z_limit} {out_dir_grid}
    Grid: fill laodem15 dem
    Filling...
    Number of sink(s): 333
    Number of sink(s): 52
    Number of sink(s): 4
    Number of sink(s): 1
    Number of sink(s): -1
    Grid: dir = flowdirection(dem)
    Computing flow direction...
    Grid: basn = basin(dir)
    Delineating drainage basin...
    Grid: accum = FLOWACCUMULATION(dir)
    Computing flow accumulation...
    Grid: stmgrd = con(accum > 4000,1)              //生成流域
    Running... 100%
    Grid: stmlnk = streamlink(stmgrd,dir)           //河流标记
    Labeling stream links...
    Grid: stmlnk_acumax = zonalmax(stmlnk,accum)
    Getting data ..
    Computing Statistics ...
    Percentage of Cells Processed: 100%
    Writing Output ...
    Percentage of Cells Processed: 100%
    Grid: outlet = con(stmlnk_acumax == accum,stmlnk)//输出出水口的位置
    Running... 100%
    Grid: subwatershed = watershed(dir,outlet)          
    Delineating watershed...
    Grid: gridline
    Usage:  (C) GRIDLINE (<in_grid>, {POSITIVE | DATA}, {THIN | NOTHIN},
                          {NOFILTER | FILTER}, {ROUND | SHARP}, {item},
                          {thickness}, {dangle}, {weed})
    Grid: stmcov = gridline(stmlnk)                  //grid-->line  参数(dem数据)
    Converting GRID STMLNK to Coverage STMCOV        //每一个河段对应一个小流域
    Thinning...
    Vectorizing...
    Generalized coverage D:\GISECO2010\LECTURE2\EXCISE02\XX03664000
    From: 9058 Vertices and 159 Arcs
    To  : 2390 Vertices and 159 Arcs
    Removing dangling arcs...
    151 unique nodes built for D:\GISECO2010\LECTURE2\EXCISE02\XX03664000
    Eliminating pseudo nodes...
    Number of Arcs     (Input,Output) = 149 141
    Grid: lg
     Workspace:        D:\GISECO2010\LECTURE2\EXCISE02

     Available GRIDs
     -------------------
      ACCUM             BASN              BJDEM             DEM
      DIR               LAODEM15          LAODEM15W         N39E114
      N39E115           OUTLET            STMGRD            STMLNK
      STMLNK_ACUMAX     SUBWATERSHED
    Grid: streamorder
    Usage:  (I) STREAMORDER (<net_grid>, <dir_grid>, {STRAHLER | SHREVE})
    Grid: stmord = streamorder(stmgrd,dir)                 //使每一个河段都有一个编码
    Computing stream order...
    Grid: streamline
    Usage:  (C) STREAMLINE (<net_grid>, <dir_grid>, {out_item}, {weed})
    Grid: stmcovln = streamline(stmord,dir)                //让编码后的图层转化为矢量的
    Converting GRID STMORD to Coverage STMCOVLN
    Grid: q
    Leaving GRID...
    Arc: q
    Leaving ARC ...

    D:\GISECO2010\lecture2\excise02>

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  • 原文地址:https://www.cnblogs.com/frostbelt/p/1763195.html
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