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Appendix A - Grid Formats

Appendix A - Grid Formats

Native CVLGrid Formats

Data Format A-1 - CVL File
The CVL file is the native CVLGrid grid file. The header lines describe the format for the grid.

Example

____________________________________________________________________________________________________

* DSI CVLGrid Version 1.1

*

* The 1st line:  CVLGrid file format version

* The 2nd line: # row, # col, coordinate system (0-Cartesian),

*               UTM zone (default 0, > 0 for northern hemisphere, < 0 for southern hemisphere),

*               3 parameters (scale and shift for X and Y, default 1, 0, 0),

*               2 parameters (scale and shift, default 1 and 0) for vertical units conversion Z.

* Other lines:  I, J (corner nodes), Cell Type, X, Y, Z LL Corner Coordinate

CVLGridFormat=1.0

   136   280     0     0     1     0     0     1     0

     1   157     5    4.917964931152040E+05    5.242959347802510E+06     0

     1   158     5    4.912742546024100E+05    5.243034901705380E+06     0

     1   159     5    4.907515911957290E+05    5.243117804821200E+06     0

     1   160     5    4.902472357772360E+05    5.243210643889140E+06     0

     1   161     5    4.897719663253260E+05    5.243314696917570E+06     0

     1   162     5    4.893519862918540E+05    5.243423351823180E+06     0



Data Format A-2 P2D Polyline/Polygon File.
Any number of polylines/polygons can reside in the same file. Each one begins with a single line header that is used as the "ID" of the polyline/polygon. Next comes the data in either 2D or 3D format, the importing automatically handles either. Finally the polyline/polygon is finished (not necessarily "closed") by an "*" in column 1. There is no difference between polyline and polygon in a P2D file, only how the data are treated by the application reading the file.

Example

____________________________________________________________________________________________________


Polyline                                                            Test

609115.69390674        3643612.72035394     0

608828.057738002      3642922.39387814     0

608569.186338242      3642232.06904821     0

608396.604307826      3640908.94563456     0

...
...
...
601493.350247946      3628713.19503985     0

601464.586301899      3627763.99747289     0

601522.11337106        3627016.14485373      0

601522.11337106        3626642.21854415      0 *

General Grid Formats

Data Format A-3 DXDY/LXLY

Example

____________________________________________________________________________________________________

C DXDY.INP FILE, IN FREE FORMAT ACROSS COLUMNS for  9322 Active Cells

C  Project:  AWWU BE

C                                           BOTTOM                 Veg

C  I      J        DX        DY          DEPTH     ELEV     ZROUGH      TYPE

    3   41       713.7    1052.2     0.081     7.992    0.0010

    3   42       693.1    1022.4     0.081     6.552    0.0010

    3   43       674.6     996.8     0.081     8.050    0.0010

    3   44       657.2     894.7     0.081     8.044    0.0010

    3   45       640.1    1026.0     0.081     8.143    0.0010

    3   46       622.5     942.8     0.081     6.302    0.0010

    3   47       605.0     869.4     0.081     8.317    0.0010

    4   27       879.6    1627.8     0.081     6.200    0.0010

    4   40       690.6    1080.7     0.081     7.607    0.0010


Example

____________________________________________________________________________________________________

C LXLY.INP FILE, IN FREE FORMAT ACROSS LINE for  9322 Active Cells

C  Project:  AWWU BE

C                                                                             WIND

C   I    J            X            Y                  CUE         CVE         CUN         CVN          SHELTER

    3   41     624703.9    6794905.0   0.23872   0.97109  -0.97109   0.23872   1.00

    3   42     625713.0    6795145.1   0.22543   0.97426  -0.97426   0.22543   1.00

    3   43     626698.3    6795365.6   0.21242   0.97718  -0.97718   0.21242   1.00

    3   44     627623.9    6795560.3   0.20017   0.97976  -0.97976   0.20017   1.00

    3   45     628566.2    6795745.9   0.18848   0.98208  -0.98208   0.18848   1.00

    3   46     629534.1    6795924.9   0.17670   0.98426  -0.98426   0.17670   1.00

    3   47     630427.0    6796079.0   0.16587   0.98615  -0.98615   0.16587   1.00

    4   27     610220.5    6788565.6   0.48437   0.87486  -0.87486   0.48437   1.00

    4   40     623852.8    6793953.4   0.27212   0.96226  -0.96226   0.27212   1.00

    4   41     624875.6    6794236.1   0.25910   0.96585  -0.96585   0.25910   1.00

    4   42     625870.4    6794492.8   0.24376   0.96984  -0.96984   0.24376   1.00



Data Format A-4 Corners(4)

Example

____________________________________________________________________________________________________

* 07-Oct-07  3:49:15 PM

*     I      J       X      Y

     3     3  147268.3  211473.6  147427.3  211409.0  147474.5  211475.5  147312.4  211573.0

     4     3  147312.4  211573.0  147474.5  211475.5  147538.3  211555.3  147374.2  211687.1

     5     3  147374.2  211687.1  147538.3  211555.3  147622.8  211650.0  147452.3  211811.0

     6     3  147452.3  211811.0  147622.8  211650.0  147726.5  211758.3  147545.0  211943.4

     7     3  147545.0  211943.4  147726.5  211758.3  147843.6  211876.1  147649.1  212082.4

     8     3  147649.1  212082.4  147843.6  211876.1  147970.5  212002.1  147760.9  212226.5

     9     3  147760.9  212226.5  147970.5  212002.1  148102.9  212134.7  147876.0  212373.1

Grid Formats from Other Models Imported into CVLGrid

Data Format A-5 ECOMSED

ECOMSED is a three-dimensional hydrodynamic and sediment transport computer code developed by HydroQual.

Example of Grid

____________________________________________________________________________________________________

ECOMSED ST CHANNEL GRID   255X  161

 2 SIGMA LEVELS

    2

          0.00

         -1.00

 HORIZONTAL SEGMENTATION: 186.1318 M BY  283.3225 M

     257     163

  176    3   186.13180 283.32250      0.00    112.46     27.145591   -122.122904      0.00

  177    3   187.18390 283.09130      0.00    112.44     27.147153   -122.123611      0.00

  178    3   187.63180 282.70260      0.00    112.41     27.148721   -122.124321      0.00

  179    3   188.10340 282.10040      0.00    112.38     27.150294   -122.125031      0.00

  180    3   188.34230 281.25040      0.00    112.34     27.151870   -122.125741      0.00

  181    3   188.27640 280.11520      0.00    112.29     27.153447   -122.126450      0.00

  182    3   187.84130 278.66650      0.00    112.24     27.155023   -122.127157      0.00

Data Format A-6 Grid95

Grid95 is a public domain grid generator. The output from Grid95 can be directly imported into EFDC_Explorer's model generation function using the GRD saved results file. Refer to the user manual for Grid95 for details on the format.

Example of Grid

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41  11

           -17.500000000000000              -20.000000000000000

           -19.489228298202900              -20.000000000000000

           -21.687665562789850              -20.000000000000000

           -24.117314492825130              -20.000000000000000

           -26.802491831433730              -20.000000000000000

           -29.770071735939730              -20.000000000000000

           -33.049754743465460              -20.000000000000000

           -36.674365023889780              -20.000000000000000

           -40.680178895172740              -20.000000000000000

           -45.107287888938710              -20.000000000000000

           -50.000000000000000              -20.000000000000000

           -17.388450867189730              -18.180965079699230

           -19.352817413073470              -18.069105224173820

Data Format A-7 SEAGRID

SeaGrid is a Matlab 5.2+ application for generating an orthogonal grid within a curved perimeter, suitable for oceanographic modeling.

Example of Grid

____________________________________________________________________________________________________

Created by SeaGrid on 22-Dec-2015 14:52:03

Vertical Segmentation - Sigma Levels (KB)

    2

          0.00

         -1.00

Horizontal Segmentation (IM & JM) -- Grid Information

     257     163

  176    3   186.13180 283.32250      0.00    112.46   0.00000   0.00000   -122.122904     27.145591

  177    3   187.18390 283.09130      0.00    112.44   0.00000   0.00000   -122.123611     27.147153

  178    3   187.63180 282.70260      0.00    112.41   0.00000   0.00000   -122.124321     27.148721

  179    3   188.10340 282.10040      0.00    112.38   0.00000   0.00000   -122.125031     27.150294

  180    3   188.34230 281.25040      0.00    112.34   0.00000   0.00000   -122.125741     27.151870

  181    3   188.27640 280.11520      0.00    112.29   0.00000   0.00000   -122.126450     27.153447

Data Format A-8 CH3D

CH3D is a Curvilinear-grid Hydrodynamics 3D model developed originally by Dr. Y. Peter Sheng at the Aeronautical Research Associates of Princeton, Inc in the 1980s.

Example of Grid

____________________________________________________________________________________________________

 CH3D GRID (FORT 15) FILE

         404         761

  0.733960125000E+06  0.530563984375E+05  0.274899997711E+02     1     1

  0.734032812500E+06  0.531251015625E+05  0.275000000000E+02     2     1

  0.734105375000E+06  0.531938007812E+05  0.274899997711E+02     3     1

  0.734178125000E+06  0.532625000000E+05  0.274799995422E+02     4     1

  0.734250812500E+06  0.533311992188E+05  0.274699993134E+02     5     1

  0.734323375000E+06  0.533998984375E+05  0.274799995422E+02     6     1

  0.734396125000E+06  0.534686015625E+05  0.274799995422E+02     7     1

Data Format A-9 Delft RGFGrid

Refer to the Delft RGFGrid user guide.

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