/******************************************************************************
* $Id: geo_extra.c 1568 2009-04-22 21:10:55Z warmerdam $
*
* Project: libgeotiff
* Purpose: Code to normalize a few common PCS values without use of CSV
* files.
* Author: Frank Warmerdam, warmerda@home.com
*
******************************************************************************
* Copyright (c) 1999, Frank Warmerdam
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
/*
#include "geotiff.h"
#include "geo_tiffp.h"
#include "geo_keyp.h"
*/
#include "geo_normalize.h"
#include "geovalues.h"
static int StatePlaneTable[] =
{
PCS_NAD83_Alabama_East, Proj_Alabama_CS83_East,
PCS_NAD83_Alabama_West, Proj_Alabama_CS83_West,
PCS_NAD83_Alaska_zone_1, Proj_Alaska_CS83_1,
PCS_NAD83_Alaska_zone_2, Proj_Alaska_CS83_2,
PCS_NAD83_Alaska_zone_3, Proj_Alaska_CS83_3,
PCS_NAD83_Alaska_zone_4, Proj_Alaska_CS83_4,
PCS_NAD83_Alaska_zone_5, Proj_Alaska_CS83_5,
PCS_NAD83_Alaska_zone_6, Proj_Alaska_CS83_6,
PCS_NAD83_Alaska_zone_7, Proj_Alaska_CS83_7,
PCS_NAD83_Alaska_zone_8, Proj_Alaska_CS83_8,
PCS_NAD83_Alaska_zone_9, Proj_Alaska_CS83_9,
PCS_NAD83_Alaska_zone_10, Proj_Alaska_CS83_10,
PCS_NAD83_California_1, Proj_California_CS83_1,
PCS_NAD83_California_2, Proj_California_CS83_2,
PCS_NAD83_California_3, Proj_California_CS83_3,
PCS_NAD83_California_4, Proj_California_CS83_4,
PCS_NAD83_California_5, Proj_California_CS83_5,
PCS_NAD83_California_6, Proj_California_CS83_6,
PCS_NAD83_Arizona_East, Proj_Arizona_CS83_east,
PCS_NAD83_Arizona_Central, Proj_Arizona_CS83_Central,
PCS_NAD83_Arizona_West, Proj_Arizona_CS83_west,
PCS_NAD83_Arkansas_North, Proj_Arkansas_CS83_North,
PCS_NAD83_Arkansas_South, Proj_Arkansas_CS83_South,
PCS_NAD83_Colorado_North, Proj_Colorado_CS83_North,
PCS_NAD83_Colorado_Central, Proj_Colorado_CS83_Central,
PCS_NAD83_Colorado_South, Proj_Colorado_CS83_South,
PCS_NAD83_Connecticut, Proj_Connecticut_CS83,
PCS_NAD83_Delaware, Proj_Delaware_CS83,
PCS_NAD83_Florida_East, Proj_Florida_CS83_East,
PCS_NAD83_Florida_North, Proj_Florida_CS83_North,
PCS_NAD83_Florida_West, Proj_Florida_CS83_West,
PCS_NAD83_Hawaii_zone_1, Proj_Hawaii_CS83_1,
PCS_NAD83_Hawaii_zone_2, Proj_Hawaii_CS83_2,
PCS_NAD83_Hawaii_zone_3, Proj_Hawaii_CS83_3,
PCS_NAD83_Hawaii_zone_4, Proj_Hawaii_CS83_4,
PCS_NAD83_Hawaii_zone_5, Proj_Hawaii_CS83_5,
PCS_NAD83_Georgia_East, Proj_Georgia_CS83_East,
PCS_NAD83_Georgia_West, Proj_Georgia_CS83_West,
PCS_NAD83_Idaho_East, Proj_Idaho_CS83_East,
PCS_NAD83_Idaho_Central, Proj_Idaho_CS83_Central,
PCS_NAD83_Idaho_West, Proj_Idaho_CS83_West,
PCS_NAD83_Illinois_East, Proj_Illinois_CS83_East,
PCS_NAD83_Illinois_West, Proj_Illinois_CS83_West,
PCS_NAD83_Indiana_East, Proj_Indiana_CS83_East,
PCS_NAD83_Indiana_West, Proj_Indiana_CS83_West,
PCS_NAD83_Iowa_North, Proj_Iowa_CS83_North,
PCS_NAD83_Iowa_South, Proj_Iowa_CS83_South,
PCS_NAD83_Kansas_North, Proj_Kansas_CS83_North,
PCS_NAD83_Kansas_South, Proj_Kansas_CS83_South,
PCS_NAD83_Kentucky_North, Proj_Kentucky_CS83_North,
PCS_NAD83_Kentucky_South, Proj_Kentucky_CS83_South,
PCS_NAD83_Louisiana_North, Proj_Louisiana_CS83_North,
PCS_NAD83_Louisiana_South, Proj_Louisiana_CS83_South,
PCS_NAD83_Maine_East, Proj_Maine_CS83_East,
PCS_NAD83_Maine_West, Proj_Maine_CS83_West,
PCS_NAD83_Maryland, Proj_Maryland_CS83,
PCS_NAD83_Massachusetts, Proj_Massachusetts_CS83_Mainland,
PCS_NAD83_Massachusetts_Is, Proj_Massachusetts_CS83_Island,
PCS_NAD83_Michigan_North, Proj_Michigan_CS83_North,
PCS_NAD83_Michigan_Central, Proj_Michigan_CS83_Central,
PCS_NAD83_Michigan_South, Proj_Michigan_CS83_South,
PCS_NAD83_Minnesota_North, Proj_Minnesota_CS83_North,
PCS_NAD83_Minnesota_Cent, Proj_Minnesota_CS83_Central,
PCS_NAD83_Minnesota_South, Proj_Minnesota_CS83_South,
PCS_NAD83_Mississippi_East, Proj_Mississippi_CS83_East,
PCS_NAD83_Mississippi_West, Proj_Mississippi_CS83_West,
PCS_NAD83_Missouri_East, Proj_Missouri_CS83_East,
PCS_NAD83_Missouri_Central, Proj_Missouri_CS83_Central,
PCS_NAD83_Missouri_West, Proj_Missouri_CS83_West,
PCS_NAD83_Montana, Proj_Montana_CS83,
PCS_NAD83_Nebraska, Proj_Nebraska_CS83,
PCS_NAD83_Nevada_East, Proj_Nevada_CS83_East,
PCS_NAD83_Nevada_Central, Proj_Nevada_CS83_Central,
PCS_NAD83_Nevada_West, Proj_Nevada_CS83_West,
PCS_NAD83_New_Hampshire, Proj_New_Hampshire_CS83,
PCS_NAD83_New_Jersey, Proj_New_Jersey_CS83,
PCS_NAD83_New_Mexico_East, Proj_New_Mexico_CS83_East,
PCS_NAD83_New_Mexico_Cent, Proj_New_Mexico_CS83_Central,
PCS_NAD83_New_Mexico_West, Proj_New_Mexico_CS83_West,
PCS_NAD83_New_York_East, Proj_New_York_CS83_East,
PCS_NAD83_New_York_Central, Proj_New_York_CS83_Central,
PCS_NAD83_New_York_West, Proj_New_York_CS83_West,
PCS_NAD83_New_York_Long_Is, Proj_New_York_CS83_Long_Island,
PCS_NAD83_North_Carolina, Proj_North_Carolina_CS83,
PCS_NAD83_North_Dakota_N, Proj_North_Dakota_CS83_North,
PCS_NAD83_North_Dakota_S, Proj_North_Dakota_CS83_South,
PCS_NAD83_Ohio_North, Proj_Ohio_CS83_North,
PCS_NAD83_Ohio_South, Proj_Ohio_CS83_South,
PCS_NAD83_Oklahoma_North, Proj_Oklahoma_CS83_North,
PCS_NAD83_Oklahoma_South, Proj_Oklahoma_CS83_South,
PCS_NAD83_Oregon_North, Proj_Oregon_CS83_North,
PCS_NAD83_Oregon_South, Proj_Oregon_CS83_South,
PCS_NAD83_Pennsylvania_N, Proj_Pennsylvania_CS83_North,
PCS_NAD83_Pennsylvania_S, Proj_Pennsylvania_CS83_South,
PCS_NAD83_Rhode_Island, Proj_Rhode_Island_CS83,
PCS_NAD83_South_Carolina, Proj_South_Carolina_CS83,
PCS_NAD83_South_Dakota_N, Proj_South_Dakota_CS83_North,
PCS_NAD83_South_Dakota_S, Proj_South_Dakota_CS83_South,
PCS_NAD83_Tennessee, Proj_Tennessee_CS83,
PCS_NAD83_Texas_North, Proj_Texas_CS83_North,
PCS_NAD83_Texas_North_Cen, Proj_Texas_CS83_North_Central,
PCS_NAD83_Texas_Central, Proj_Texas_CS83_Central,
PCS_NAD83_Texas_South_Cen, Proj_Texas_CS83_South_Central,
PCS_NAD83_Texas_South, Proj_Texas_CS83_South,
PCS_NAD83_Utah_North, Proj_Utah_CS83_North,
PCS_NAD83_Utah_Central, Proj_Utah_CS83_Central,
PCS_NAD83_Utah_South, Proj_Utah_CS83_South,
PCS_NAD83_Vermont, Proj_Vermont_CS83,
PCS_NAD83_Virginia_North, Proj_Virginia_CS83_North,
PCS_NAD83_Virginia_South, Proj_Virginia_CS83_South,
PCS_NAD83_Washington_North, Proj_Washington_CS83_North,
PCS_NAD83_Washington_South, Proj_Washington_CS83_South,
PCS_NAD83_West_Virginia_N, Proj_West_Virginia_CS83_North,
PCS_NAD83_West_Virginia_S, Proj_West_Virginia_CS83_South,
PCS_NAD83_Wisconsin_North, Proj_Wisconsin_CS83_North,
PCS_NAD83_Wisconsin_Cen, Proj_Wisconsin_CS83_Central,
PCS_NAD83_Wisconsin_South, Proj_Wisconsin_CS83_South,
PCS_NAD83_Wyoming_East, Proj_Wyoming_CS83_East,
PCS_NAD83_Wyoming_E_Cen, Proj_Wyoming_CS83_East_Central,
PCS_NAD83_Wyoming_W_Cen, Proj_Wyoming_CS83_West_Central,
PCS_NAD83_Wyoming_West, Proj_Wyoming_CS83_West,
PCS_NAD83_Puerto_Rico_Virgin_Is, Proj_Puerto_Rico_Virgin_Is,
PCS_NAD27_Alabama_East, Proj_Alabama_CS27_East,
PCS_NAD27_Alabama_West, Proj_Alabama_CS27_West,
PCS_NAD27_Alaska_zone_1, Proj_Alaska_CS27_1,
PCS_NAD27_Alaska_zone_2, Proj_Alaska_CS27_2,
PCS_NAD27_Alaska_zone_3, Proj_Alaska_CS27_3,
PCS_NAD27_Alaska_zone_4, Proj_Alaska_CS27_4,
PCS_NAD27_Alaska_zone_5, Proj_Alaska_CS27_5,
PCS_NAD27_Alaska_zone_6, Proj_Alaska_CS27_6,
PCS_NAD27_Alaska_zone_7, Proj_Alaska_CS27_7,
PCS_NAD27_Alaska_zone_8, Proj_Alaska_CS27_8,
PCS_NAD27_Alaska_zone_9, Proj_Alaska_CS27_9,
PCS_NAD27_Alaska_zone_10, Proj_Alaska_CS27_10,
PCS_NAD27_California_I, Proj_California_CS27_I,
PCS_NAD27_California_II, Proj_California_CS27_II,
PCS_NAD27_California_III, Proj_California_CS27_III,
PCS_NAD27_California_IV, Proj_California_CS27_IV,
PCS_NAD27_California_V, Proj_California_CS27_V,
PCS_NAD27_California_VI, Proj_California_CS27_VI,
PCS_NAD27_California_VII, Proj_California_CS27_VII,
PCS_NAD27_Arizona_East, Proj_Arizona_Coordinate_System_east,
PCS_NAD27_Arizona_Central, Proj_Arizona_Coordinate_System_Central,
PCS_NAD27_Arizona_West, Proj_Arizona_Coordinate_System_west,
PCS_NAD27_Arkansas_North, Proj_Arkansas_CS27_North,
PCS_NAD27_Arkansas_South, Proj_Arkansas_CS27_South,
PCS_NAD27_Colorado_North, Proj_Colorado_CS27_North,
PCS_NAD27_Colorado_Central, Proj_Colorado_CS27_Central,
PCS_NAD27_Colorado_South, Proj_Colorado_CS27_South,
PCS_NAD27_Connecticut, Proj_Connecticut_CS27,
PCS_NAD27_Delaware, Proj_Delaware_CS27,
PCS_NAD27_Florida_East, Proj_Florida_CS27_East,
PCS_NAD27_Florida_North, Proj_Florida_CS27_North,
PCS_NAD27_Florida_West, Proj_Florida_CS27_West,
PCS_NAD27_Hawaii_zone_1, Proj_Hawaii_CS27_1,
PCS_NAD27_Hawaii_zone_2, Proj_Hawaii_CS27_2,
PCS_NAD27_Hawaii_zone_3, Proj_Hawaii_CS27_3,
PCS_NAD27_Hawaii_zone_4, Proj_Hawaii_CS27_4,
PCS_NAD27_Hawaii_zone_5, Proj_Hawaii_CS27_5,
PCS_NAD27_Georgia_East, Proj_Georgia_CS27_East,
PCS_NAD27_Georgia_West, Proj_Georgia_CS27_West,
PCS_NAD27_Idaho_East, Proj_Idaho_CS27_East,
PCS_NAD27_Idaho_Central, Proj_Idaho_CS27_Central,
PCS_NAD27_Idaho_West, Proj_Idaho_CS27_West,
PCS_NAD27_Illinois_East, Proj_Illinois_CS27_East,
PCS_NAD27_Illinois_West, Proj_Illinois_CS27_West,
PCS_NAD27_Indiana_East, Proj_Indiana_CS27_East,
PCS_NAD27_Indiana_West, Proj_Indiana_CS27_West,
PCS_NAD27_Iowa_North, Proj_Iowa_CS27_North,
PCS_NAD27_Iowa_South, Proj_Iowa_CS27_South,
PCS_NAD27_Kansas_North, Proj_Kansas_CS27_North,
PCS_NAD27_Kansas_South, Proj_Kansas_CS27_South,
PCS_NAD27_Kentucky_North, Proj_Kentucky_CS27_North,
PCS_NAD27_Kentucky_South, Proj_Kentucky_CS27_South,
PCS_NAD27_Louisiana_North, Proj_Louisiana_CS27_North,
PCS_NAD27_Louisiana_South, Proj_Louisiana_CS27_South,
PCS_NAD27_Maine_East, Proj_Maine_CS27_East,
PCS_NAD27_Maine_West, Proj_Maine_CS27_West,
PCS_NAD27_Maryland, Proj_Maryland_CS27,
PCS_NAD27_Massachusetts, Proj_Massachusetts_CS27_Mainland,
PCS_NAD27_Massachusetts_Is, Proj_Massachusetts_CS27_Island,
PCS_NAD27_Michigan_North, Proj_Michigan_CS27_North,
PCS_NAD27_Michigan_Central, Proj_Michigan_CS27_Central,
PCS_NAD27_Michigan_South, Proj_Michigan_CS27_South,
PCS_NAD27_Minnesota_North, Proj_Minnesota_CS27_North,
PCS_NAD27_Minnesota_Cent, Proj_Minnesota_CS27_Central,
PCS_NAD27_Minnesota_South, Proj_Minnesota_CS27_South,
PCS_NAD27_Mississippi_East, Proj_Mississippi_CS27_East,
PCS_NAD27_Mississippi_West, Proj_Mississippi_CS27_West,
PCS_NAD27_Missouri_East, Proj_Missouri_CS27_East,
PCS_NAD27_Missouri_Central, Proj_Missouri_CS27_Central,
PCS_NAD27_Missouri_West, Proj_Missouri_CS27_West,
PCS_NAD27_Montana_North, Proj_Montana_CS27_North,
PCS_NAD27_Montana_Central, Proj_Montana_CS27_Central,
PCS_NAD27_Montana_South, Proj_Montana_CS27_South,
PCS_NAD27_Nebraska_North, Proj_Nebraska_CS27_North,
PCS_NAD27_Nebraska_South, Proj_Nebraska_CS27_South,
PCS_NAD27_Nevada_East, Proj_Nevada_CS27_East,
PCS_NAD27_Nevada_Central, Proj_Nevada_CS27_Central,
PCS_NAD27_Nevada_West, Proj_Nevada_CS27_West,
PCS_NAD27_New_Hampshire, Proj_New_Hampshire_CS27,
PCS_NAD27_New_Jersey, Proj_New_Jersey_CS27,
PCS_NAD27_New_Mexico_East, Proj_New_Mexico_CS27_East,
PCS_NAD27_New_Mexico_Cent, Proj_New_Mexico_CS27_Central,
PCS_NAD27_New_Mexico_West, Proj_New_Mexico_CS27_West,
PCS_NAD27_New_York_East, Proj_New_York_CS27_East,
PCS_NAD27_New_York_Central, Proj_New_York_CS27_Central,
PCS_NAD27_New_York_West, Proj_New_York_CS27_West,
PCS_NAD27_New_York_Long_Is, Proj_New_York_CS27_Long_Island,
PCS_NAD27_North_Carolina, Proj_North_Carolina_CS27,
PCS_NAD27_North_Dakota_N, Proj_North_Dakota_CS27_North,
PCS_NAD27_North_Dakota_S, Proj_North_Dakota_CS27_South,
PCS_NAD27_Ohio_North, Proj_Ohio_CS27_North,
PCS_NAD27_Ohio_South, Proj_Ohio_CS27_South,
PCS_NAD27_Oklahoma_North, Proj_Oklahoma_CS27_North,
PCS_NAD27_Oklahoma_South, Proj_Oklahoma_CS27_South,
PCS_NAD27_Oregon_North, Proj_Oregon_CS27_North,
PCS_NAD27_Oregon_South, Proj_Oregon_CS27_South,
PCS_NAD27_Pennsylvania_N, Proj_Pennsylvania_CS27_North,
PCS_NAD27_Pennsylvania_S, Proj_Pennsylvania_CS27_South,
PCS_NAD27_Rhode_Island, Proj_Rhode_Island_CS27,
PCS_NAD27_South_Carolina_N, Proj_South_Carolina_CS27_North,
PCS_NAD27_South_Carolina_S, Proj_South_Carolina_CS27_South,
PCS_NAD27_South_Dakota_N, Proj_South_Dakota_CS27_North,
PCS_NAD27_South_Dakota_S, Proj_South_Dakota_CS27_South,
PCS_NAD27_Tennessee, Proj_Tennessee_CS27,
PCS_NAD27_Texas_North, Proj_Texas_CS27_North,
PCS_NAD27_Texas_North_Cen, Proj_Texas_CS27_North_Central,
PCS_NAD27_Texas_Central, Proj_Texas_CS27_Central,
PCS_NAD27_Texas_South_Cen, Proj_Texas_CS27_South_Central,
PCS_NAD27_Texas_South, Proj_Texas_CS27_South,
PCS_NAD27_Utah_North, Proj_Utah_CS27_North,
PCS_NAD27_Utah_Central, Proj_Utah_CS27_Central,
PCS_NAD27_Utah_South, Proj_Utah_CS27_South,
PCS_NAD27_Vermont, Proj_Vermont_CS27,
PCS_NAD27_Virginia_North, Proj_Virginia_CS27_North,
PCS_NAD27_Virginia_South, Proj_Virginia_CS27_South,
PCS_NAD27_Washington_North, Proj_Washington_CS27_North,
PCS_NAD27_Washington_South, Proj_Washington_CS27_South,
PCS_NAD27_West_Virginia_N, Proj_West_Virginia_CS27_North,
PCS_NAD27_West_Virginia_S, Proj_West_Virginia_CS27_South,
PCS_NAD27_Wisconsin_North, Proj_Wisconsin_CS27_North,
PCS_NAD27_Wisconsin_Cen, Proj_Wisconsin_CS27_Central,
PCS_NAD27_Wisconsin_South, Proj_Wisconsin_CS27_South,
PCS_NAD27_Wyoming_East, Proj_Wyoming_CS27_East,
PCS_NAD27_Wyoming_E_Cen, Proj_Wyoming_CS27_East_Central,
PCS_NAD27_Wyoming_W_Cen, Proj_Wyoming_CS27_West_Central,
PCS_NAD27_Wyoming_West, Proj_Wyoming_CS27_West,
PCS_NAD27_Puerto_Rico, Proj_Puerto_Rico_CS27,
KvUserDefined
};
/************************************************************************/
/* GTIFMapSysToPCS() */
/* */
/* Given a Datum, MapSys and zone value generate the best PCS */
/* code possible. */
/************************************************************************/
int GTIFMapSysToPCS( int MapSys, int Datum, int nZone )
{
int PCSCode = KvUserDefined;
if( MapSys == MapSys_UTM_North )
{
if( Datum == GCS_NAD27 )
PCSCode = PCS_NAD27_UTM_zone_3N + nZone - 3;
else if( Datum == GCS_NAD83 )
PCSCode = PCS_NAD83_UTM_zone_3N + nZone - 3;
else if( Datum == GCS_WGS_72 )
PCSCode = PCS_WGS72_UTM_zone_1N + nZone - 1;
else if( Datum == GCS_WGS_72BE )
PCSCode = PCS_WGS72BE_UTM_zone_1N + nZone - 1;
else if( Datum == GCS_WGS_84 )
PCSCode = PCS_WGS84_UTM_zone_1N + nZone - 1;
}
else if( MapSys == MapSys_UTM_South )
{
if( Datum == GCS_WGS_72 )
PCSCode = PCS_WGS72_UTM_zone_1S + nZone - 1;
else if( Datum == GCS_WGS_72BE )
PCSCode = PCS_WGS72BE_UTM_zone_1S + nZone - 1;
else if( Datum == GCS_WGS_84 )
PCSCode = PCS_WGS84_UTM_zone_1S + nZone - 1;
}
else if( MapSys == MapSys_State_Plane_27 )
{
int i;
PCSCode = 10000 + nZone;
for( i = 0; StatePlaneTable[i] != KvUserDefined; i += 2 )
{
if( StatePlaneTable[i+1] == PCSCode )
PCSCode = StatePlaneTable[i];
}
/* Old EPSG code was in error for Tennesse CS27, override */
if( nZone == 4100 )
PCSCode = 2204;
}
else if( MapSys == MapSys_State_Plane_83 )
{
int i;
PCSCode = 10000 + nZone + 30;
for( i = 0; StatePlaneTable[i] != KvUserDefined; i += 2 )
{
if( StatePlaneTable[i+1] == PCSCode )
PCSCode = StatePlaneTable[i];
}
/* Old EPSG code was in error for Kentucky North CS83, override */
if( nZone == 1601 )
PCSCode = 2205;
}
return( PCSCode );
}
/************************************************************************/
/* GTIFMapSysToProj() */
/* */
/* Given a MapSys and zone value generate the best Proj_ */
/* code possible. */
/************************************************************************/
int GTIFMapSysToProj( int MapSys, int nZone )
{
int ProjCode = KvUserDefined;
if( MapSys == MapSys_UTM_North )
{
ProjCode = Proj_UTM_zone_1N + nZone - 1;
}
else if( MapSys == MapSys_UTM_South )
{
ProjCode = Proj_UTM_zone_1S + nZone - 1;
}
else if( MapSys == MapSys_State_Plane_27 )
{
ProjCode = 10000 + nZone;
/* Tennesse override */
if( nZone == 4100 )
ProjCode = 15302;
}
else if( MapSys == MapSys_State_Plane_83 )
{
ProjCode = 10000 + nZone + 30;
/* Kentucky North override */
if( nZone == 1601 )
ProjCode = 15303;
}
return( ProjCode );
}
/************************************************************************/
/* GTIFPCSToMapSys() */
/************************************************************************/
/**
* Translate a PCS_ code into a UTM or State Plane map system, a datum,
* and a zone if possible.
*
* @param PCSCode The projection code (PCS_*) as would be stored in the
* ProjectedCSTypeGeoKey of a GeoTIFF file.
*
* @param pDatum Pointer to an integer into which the datum code (GCS_*)
* is put if the function succeeds.
*
* @param pZone Pointer to an integer into which the zone will be placed
* if the function is successful.
*
* @return Returns either MapSys_UTM_North, MapSys_UTM_South,
* MapSys_State_Plane_83, MapSys_State_Plane_27 or KvUserDefined.
* KvUserDefined indicates that the
* function failed to recognise the projection as UTM or State Plane.
*
* The zone value is only set if the return code is other than KvUserDefined.
* For utm map system the returned zone will be between 1 and 60. For
* State Plane, the USGS state plane zone number is returned. For instance,
* Alabama East is zone 101.
*
* The datum (really this is the GCS) is set to a GCS_ value such as GCS_NAD27.
*
* This function is useful to recognise (most) UTM and State Plane coordinate
* systems, even if CSV files aren't available to translate them automatically.
* It is used as a fallback mechanism by GTIFGetDefn() for normalization when
* CSV files aren't found.
*/
int GTIFPCSToMapSys( int PCSCode, int * pDatum, int * pZone )
{
int Datum = KvUserDefined, Proj = KvUserDefined;
int nZone = KvUserDefined, i;
/* -------------------------------------------------------------------- */
/* UTM with various datums. Note there are lots of PCS UTM */
/* codes not done yet which use strange datums. */
/* -------------------------------------------------------------------- */
if( PCSCode >= PCS_NAD27_UTM_zone_3N && PCSCode <= PCS_NAD27_UTM_zone_22N )
{
Datum = GCS_NAD27;
Proj = MapSys_UTM_North;
nZone = PCSCode - PCS_NAD27_UTM_zone_3N + 3;
}
else if( PCSCode >= PCS_NAD83_UTM_zone_3N
&& PCSCode <= PCS_NAD83_UTM_zone_23N )
{
Datum = GCS_NAD83;
Proj = MapSys_UTM_North;
nZone = PCSCode - PCS_NAD83_UTM_zone_3N + 3;
}
else if( PCSCode >= PCS_WGS72_UTM_zone_1N
&& PCSCode <= PCS_WGS72_UTM_zone_60N )
{
Datum = GCS_WGS_72;
Proj = MapSys_UTM_North;
nZone = PCSCode - PCS_WGS72_UTM_zone_1N + 1;
}
else if( PCSCode >= PCS_WGS72_UTM_zone_1S
&& PCSCode <= PCS_WGS72_UTM_zone_60S )
{
Datum = GCS_WGS_72;
Proj = MapSys_UTM_South;
nZone = PCSCode - PCS_WGS72_UTM_zone_1S + 1;
}
else if( PCSCode >= PCS_WGS72BE_UTM_zone_1N
&& PCSCode <= PCS_WGS72BE_UTM_zone_60N )
{
Datum = GCS_WGS_72BE;
Proj = MapSys_UTM_North;
nZone = PCSCode - PCS_WGS72BE_UTM_zone_1N + 1;
}
else if( PCSCode >= PCS_WGS72BE_UTM_zone_1S
&& PCSCode <= PCS_WGS72BE_UTM_zone_60S )
{
Datum = GCS_WGS_72BE;
Proj = MapSys_UTM_South;
nZone = PCSCode - PCS_WGS72BE_UTM_zone_1S + 1;
}
else if( PCSCode >= PCS_WGS84_UTM_zone_1N
&& PCSCode <= PCS_WGS84_UTM_zone_60N )
{
Datum = GCS_WGS_84;
Proj = MapSys_UTM_North;
nZone = PCSCode - PCS_WGS84_UTM_zone_1N + 1;
}
else if( PCSCode >= PCS_WGS84_UTM_zone_1S
&& PCSCode <= PCS_WGS84_UTM_zone_60S )
{
Datum = GCS_WGS_84;
Proj = MapSys_UTM_South;
nZone = PCSCode - PCS_WGS84_UTM_zone_1S + 1;
}
else if( PCSCode >= PCS_SAD69_UTM_zone_18N
&& PCSCode <= PCS_SAD69_UTM_zone_22N )
{
Datum = KvUserDefined;
Proj = MapSys_UTM_North;
nZone = PCSCode - PCS_SAD69_UTM_zone_18N + 18;
}
else if( PCSCode >= PCS_SAD69_UTM_zone_17S
&& PCSCode <= PCS_SAD69_UTM_zone_25S )
{
Datum = KvUserDefined;
Proj = MapSys_UTM_South;
nZone = PCSCode - PCS_SAD69_UTM_zone_17S + 17;
}
/* -------------------------------------------------------------------- */
/* State Plane zones, first we translate any PCS_ codes to */
/* a Proj_ code that we can get a handle on. */
/* -------------------------------------------------------------------- */
for( i = 0; StatePlaneTable[i] != KvUserDefined; i += 2 )
{
if( StatePlaneTable[i] == PCSCode )
PCSCode = StatePlaneTable[i+1];
}
if( PCSCode <= 15900 && PCSCode >= 10000 )
{
if( (PCSCode % 100) >= 30 )
{
Proj = MapSys_State_Plane_83;
Datum = GCS_NAD83;
}
else
{
Proj = MapSys_State_Plane_27;
Datum = GCS_NAD27;
}
nZone = PCSCode - 10000;
if( Datum == GCS_NAD83 )
nZone -= 30;
}
if( pDatum != NULL )
*pDatum = Datum;
if( pZone != NULL )
*pZone = nZone;
return( Proj );
}
/************************************************************************/
/* GTIFProjToMapSys() */
/************************************************************************/
/**
* Translate a Proj_ code into a UTM or State Plane map system, and a zone
* if possible.
*
* @param ProjCode The projection code (Proj_*) as would be stored in the
* ProjectionGeoKey of a GeoTIFF file.
* @param pZone Pointer to an integer into which the zone will be placed
* if the function is successful.
*
* @return Returns either MapSys_UTM_North, MapSys_UTM_South,
* MapSys_State_Plane_27, MapSys_State_Plane_83 or KvUserDefined.
* KvUserDefined indicates that the
* function failed to recognise the projection as UTM or State Plane.
*
* The zone value is only set if the return code is other than KvUserDefined.
* For utm map system the returned zone will be between 1 and 60. For
* State Plane, the USGS state plane zone number is returned. For instance,
* Alabama East is zone 101.
*
* This function is useful to recognise UTM and State Plane coordinate
* systems, and to extract zone numbers so the projections can be
* represented as UTM rather than as the underlying projection method such
* Transverse Mercator for instance.
*/
int GTIFProjToMapSys( int ProjCode, int * pZone )
{
int nZone = KvUserDefined;
int MapSys = KvUserDefined;
/* -------------------------------------------------------------------- */
/* Handle UTM. */
/* -------------------------------------------------------------------- */
if( ProjCode >= Proj_UTM_zone_1N && ProjCode <= Proj_UTM_zone_60N )
{
MapSys = MapSys_UTM_North;
nZone = ProjCode - Proj_UTM_zone_1N + 1;
}
else if( ProjCode >= Proj_UTM_zone_1S && ProjCode <= Proj_UTM_zone_60S )
{
MapSys = MapSys_UTM_South;
nZone = ProjCode - Proj_UTM_zone_1S + 1;
}
/* -------------------------------------------------------------------- */
/* Handle State Plane. I think there are some anomolies in */
/* here, so this is a bit risky. */
/* -------------------------------------------------------------------- */
else if( ProjCode >= 10101 && ProjCode <= 15299 )
{
if( ProjCode % 100 >= 30 )
{
MapSys = MapSys_State_Plane_83;
nZone = ProjCode - 10000 - 30;
}
else
{
MapSys = MapSys_State_Plane_27;
nZone = ProjCode - 10000;
}
}
if( pZone != NULL )
*pZone = nZone;
return( MapSys );
}