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1) "stubs" of the form: MNC_WV_[G|L]2D_R[S|L] () |
1) "stubs" of the form: MNC_WV_[G|L]2D_R[S|L] () |
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2) MNC_INIT_VGRID( 'V_GRID_TYPE', nx, ny, nz, zc, zg ) |
2) MNC_INIT_VGRID('V_GRID_TYPE', nx, ny, nz, zc, zg) |
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1 1 |
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3) MNC_INIT_HGRID( 'H_GRID_TYPE', nx, ny, xc, yc, xg, yg ) |
3) MNC_INIT_HGRID('H_GRID_TYPE', nx, ny, xc, yc, xg, yg) |
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4) MNC_INIT_VAR( 'file', 'Vname', 'Vunits', 'H_GTYPE', 'V_GTYPE', PREC, FillVal ) |
4) MNC_INIT_VAR('file', 'Vname', 'Vunits', 'H_GTYPE', 'V_GTYPE', PREC, FillVal) |
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5) MNC_WRITE_VAR( 'file', 'Vname', var, bi, bj, myThid ) |
5) MNC_WRITE_VAR('file', 'Vname', var, bi, bj, myThid) |
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This is a reasonable start but its inflexible since it isn't easily |
This is a reasonable start but its inflexible since it isn't easily |
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generalized to grids with dimensions other than [2,3,4] or grids with |
generalized to grids with dimensions other than [2,3,4] or grids with |
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which can then be manipulated (created, associated, destroyed, etc.) |
which can then be manipulated (created, associated, destroyed, etc.) |
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using a simple interface such as: |
using a simple interface such as: |
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MNC_INIT( myThid ) |
MNC_INIT( myThid ) |
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MNC_FILE_CREATE( myThid, fname ) |
MNC_FILE_CREATE( fname, myThid ) |
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MNC_FILE_OPEN( myThid, fname, itype ) |
MNC_FILE_OPEN( fname, itype, myThid ) |
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MNC_FILE_ADD_ATTR_STR( myThid, fname, atname, sval ) |
MNC_FILE_ADD_ATTR_STR( fname, atname, sval, myThid ) |
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MNC_FILE_ADD_ATTR_INT( myThid, fname, atname, ival ) |
MNC_FILE_ADD_ATTR_DBL( fname, atname, len, dval, myThid ) |
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MNC_FILE_ADD_ATTR_DBL( myThid, fname, atname, dval ) |
MNC_FILE_ADD_ATTR_REAL(fname, atname, len, rval, myThid ) |
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MNC_FILE_ADD_ATTR_INT( fname, atname, len, ival, myThid ) |
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MNC_FILE_ADD_ATTR_ANY( fname, atname, atype, cs,len,dv,rv,iv, myThid ) |
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... |
... |
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MNC_FILE_READ_HEADER( myThid, fname ) |
MNC_FILE_READ_HEADER( fname, myThid ) |
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MNC_DIM_INIT( myThid, dname, dunits, dlen ) |
MNC_DIM_INIT( fname, dname, dlen, myThid ) |
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MNC_DIM_REMOVE( myThid, dname ) |
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MNC_GRID_INIT( myThid, fname, gname, ndim, dnames ) |
MNC_GRID_INIT( fname, gname, ndim, dnames, myThid ) |
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MNC_GRID_SET_LL( myThid, fname, gname, type, lats, lons ) |
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MNC_VAR_INIT_DBL( myThid, fname, gname, vname, fillval ) |
MNC_VAR_INIT_DBL( fname, gname, vname, units, myThid ) |
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MNC_VAR_INIT_REAL( myThid, fname, gname, vname, fillval ) |
MNC_VAR_INIT_REAL( fname, gname, vname, units, myThid ) |
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MNC_VAR_INIT_INT( myThid, fname, gname, vname, fillval ) |
MNC_VAR_INIT_INT( fname, gname, vname, units, myThid ) |
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MNC_VAR_ADD_ATTR_STR( myThid, vname, name, sval ) |
MNC_VAR_INIT_ANY( fname, gname, vname, units, type, myThid ) |
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MNC_VAR_ADD_ATTR_INT( myThid, vname, name, ival ) |
MNC_VAR_ADD_ATTR_STR( fname, vname, atname, sval, myThid ) |
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MNC_VAR_ADD_ATTR_DBL( myThid, vname, name, dval ) |
MNC_VAR_ADD_ATTR_DBL( fname, vname, atname, nv, dval, myThid ) |
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MNC_VAR_WRITE( myThid, vname, var ) |
MNC_VAR_ADD_ATTR_REAL( fname, vname, atname, nv, rval, myThid ) |
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MNC_VAR_ADD_ATTR_INT( fname, vname, atname, nv, ival, myThid ) |
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MNC_VAR_ADD_ATTR_ANY( fname, vname, atname, atype, cs,len,dv,rv,iv, myThid ) |
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MNC_VAR_WRITE_DBL( fname, vname, var, myThid ) |
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MNC_VAR_WRITE_REAL( fname, vname, var, myThid ) |
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MNC_VAR_WRITE_INT( fname, vname, var, myThid ) |
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MNC_VAR_WRITE_ANY( fname, vname, vtype, dv, rv, iv, myThid ) |
| 66 |
... |
... |
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MNC_VAR_READ( myThid, vname, var ) |
MNC_VAR_READ( fname, vname, var, myThid ) |
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MNC_FILE_CLOSE( myThid, fname ) |
MNC_FILE_SYNC( fname, myThid ) |
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MNC_FILE_CLOSE( fname, myThid ) |
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The above interface is powerful yet easy to use (easier than the |
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entire NetCDF interface) since it helps the user keep track of the |
Heres a further "convenience wrapper" written on top of the above UI: |
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associations between files, "grids", variables, and dimensions. |
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MNC_CW_INIT( Gtype, Htype, Hsub, Vtype, Ttype, wHalo, myThid ) |
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with pre-defined - xy - - n |
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combinations: U x c t y |
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'Cen_xy_c_t_Hn' V y i |
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'U_xy_i_t_Hn', Cen |
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'Cor_x_-_-_Hy' Cor |
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MNC_CW_SET_UDIM( fbname, udim, myThid ) |
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MNC_CW_RX_W( 'R|D|I', fbname,bi,bj, vtype, indu, var, myThid ) |
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MNC_CW_RX_R( 'R|D|I', fbname,bi,bj, vtype, indu, var, myThid ) |
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+-- RX = 'RL', 'RS', or 'I' |
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MNC_COMP_VTYPE_VAR( ind_vt, ind_fv_ids, ires, myThid ) |
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| 93 |
To-Do: |
To-Do: |
| 94 |
====== |
====== |
| 95 |
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| 96 |
1) CNH pointed out that grid interpolation needs to be handled |
1) NAMING -- We should (as much as possible) try to name variables so |
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that they are in agreement with the CF naming conventions. |
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| 99 |
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2) UNITS -- as with the names we need to follow conventions |
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3) AM described her "diags" (or "myDiags" or "mDiags") interface |
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which should use MNC for output. The data storage idea is similar |
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to the MNC tables-of-indicies approach but also includes one huge |
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double-precision "accumulator" to hold all the temporary values |
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(eg. partial sums for averages, current max/mins): |
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vname ( ni ) |
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vlen ( ni ) |
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vind ( ni ) ------+ |
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vij_diag ( i, j, [...] ) w/ lat/lon indicies |
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vgl_diag ( [...] ) wo/ lat/lon indicies (global) |
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4) CNH pointed out that grid interpolation needs to be handled |
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"on-the-fly" since pre-processing would result in overly large |
"on-the-fly" since pre-processing would result in overly large |
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input files. We need an interpolation API... |
input files. We need an interpolation API... |
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5) From the group meeting on 2004/01/21, we need to define |
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"sub-grids" corresponding to: |
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var_name HGRID VGRID TIME |
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=========================================== |
| 124 |
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u U_xy r_c t |
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eta T_xy - t |
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rac T_xy - - |
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And write a convenience wrapper so that users can write variables |
| 129 |
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using just two function calls. JMC and I worked out the |
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following: |
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