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netcdflayer.cpp
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/******************************************************************************
*
* Project: netCDF read/write Driver
* Purpose: GDAL bindings over netCDF library.
* Author: Even Rouault <even.rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2016, Even Rouault <even.rouault at spatialys.com>
*
* 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 "netcdfdataset.h"
#include "netcdfsgwriterutil.h"
#include "netcdfsg.h"
#include "netcdflayersg.h"
#include "cpl_time.h"
/************************************************************************/
/* netCDFLayer() */
/************************************************************************/
netCDFLayer::netCDFLayer(netCDFDataset *poDS, int nLayerCDFId,
const char *pszName, OGRwkbGeometryType eGeomType,
OGRSpatialReference *poSRS)
: m_poDS(poDS), m_nLayerCDFId(nLayerCDFId),
m_poFeatureDefn(new OGRFeatureDefn(pszName)), m_osRecordDimName("record"),
m_nRecordDimID(-1), m_nDefaultWidth(10), m_bAutoGrowStrings(true),
m_nDefaultMaxWidthDimId(-1), m_nXVarID(-1), m_nYVarID(-1), m_nZVarID(-1),
m_nXVarNCDFType(NC_NAT), m_nYVarNCDFType(NC_NAT), m_nZVarNCDFType(NC_NAT),
m_osWKTVarName("ogc_wkt"), m_nWKTMaxWidth(10000), m_nWKTMaxWidthDimId(-1),
m_nWKTVarID(-1), m_nWKTNCDFType(NC_NAT), m_bLegacyCreateMode(true),
m_nCurFeatureId(1), m_bWriteGDALTags(true), m_bUseStringInNC4(true),
m_bNCDumpCompat(true), m_nProfileDimID(-1), m_nProfileVarID(-1),
m_bProfileVarUnlimited(false), m_nParentIndexVarID(-1),
layerVID_alloc(poDS->cdfid == m_nLayerCDFId
? nullptr
: new nccfdriver::netCDFVID(m_nLayerCDFId)),
layerVID(layerVID_alloc.get() == nullptr ? poDS->vcdf : *layerVID_alloc),
m_SGeometryFeatInd(0), m_poLayerConfig(nullptr),
m_layerSGDefn(poDS->cdfid, nccfdriver::OGRtoRaw(eGeomType), poDS->vcdf,
poDS->GeometryScribe)
{
m_uXVarNoData.nVal64 = 0;
m_uYVarNoData.nVal64 = 0;
m_uZVarNoData.nVal64 = 0;
m_poFeatureDefn->SetGeomType(eGeomType);
if (eGeomType != wkbNone)
m_poFeatureDefn->GetGeomFieldDefn(0)->SetSpatialRef(poSRS);
m_poFeatureDefn->Reference();
SetDescription(pszName);
}
/************************************************************************/
/* ~netCDFLayer() */
/************************************************************************/
netCDFLayer::~netCDFLayer()
{
m_poFeatureDefn->Release();
}
/************************************************************************/
/* netCDFWriteAttributesFromConf() */
/************************************************************************/
void netCDFLayer::netCDFWriteAttributesFromConf(
int cdfid, int varid,
const std::vector<netCDFWriterConfigAttribute> &aoAttributes)
{
for (size_t i = 0; i < aoAttributes.size(); i++)
{
try
{
const netCDFWriterConfigAttribute &oAtt = aoAttributes[i];
int status = NC_NOERR;
if (oAtt.m_osValue.empty())
{
int attid = -1;
status = nc_inq_attid(cdfid, varid, oAtt.m_osName, &attid);
if (status == NC_NOERR)
status = nc_del_att(cdfid, varid, oAtt.m_osName);
else
status = NC_NOERR;
}
else if (EQUAL(oAtt.m_osType, "string"))
{
layerVID.nc_put_vatt_text(varid, oAtt.m_osName, oAtt.m_osValue);
}
else if (EQUAL(oAtt.m_osType, "integer"))
{
int nVal = atoi(oAtt.m_osValue);
layerVID.nc_put_vatt_int(varid, oAtt.m_osName, &nVal);
}
else if (EQUAL(oAtt.m_osType, "double"))
{
double dfVal = CPLAtof(oAtt.m_osValue);
layerVID.nc_put_vatt_double(varid, oAtt.m_osName, &dfVal);
}
NCDF_ERR(status);
}
catch (nccfdriver::SG_Exception &e)
{
CPLError(CE_Failure, CPLE_FileIO, "%s", e.get_err_msg());
}
}
}
/************************************************************************/
/* Create() */
/************************************************************************/
bool netCDFLayer::Create(char **papszOptions,
const netCDFWriterConfigLayer *poLayerConfig)
{
m_poDS->SetDefineMode(true);
if (m_poDS->bSGSupport)
{
m_bLegacyCreateMode = false;
}
else
{
m_bLegacyCreateMode = true;
}
long long newbufsize = 0;
const char *memorySizeLimitation =
CSLFetchNameValueDef(papszOptions, "BUFFER_SIZE", "");
std::string memorySizeLimitation_s = std::string(memorySizeLimitation);
if (memorySizeLimitation_s != "")
{
newbufsize = strtoll(memorySizeLimitation, nullptr, 10);
}
const char *singleDatumMode =
CSLFetchNameValueDef(papszOptions, "GROUPLESS_WRITE_BACK", "NO");
if (CPLTestBool(singleDatumMode))
{
m_poDS->GeometryScribe.setSingleDatumMode(true);
m_poDS->FieldScribe.setSingleDatumMode(true);
}
if (m_bLegacyCreateMode)
{
m_osRecordDimName = CSLFetchNameValueDef(
papszOptions, "RECORD_DIM_NAME", m_osRecordDimName.c_str());
}
m_bAutoGrowStrings =
CPL_TO_BOOL(CSLFetchBoolean(papszOptions, "AUTOGROW_STRINGS", TRUE));
m_nDefaultWidth = atoi(
CSLFetchNameValueDef(papszOptions, "STRING_DEFAULT_WIDTH",
CPLSPrintf("%d", m_bAutoGrowStrings ? 10 : 80)));
m_bWriteGDALTags = CPL_TO_BOOL(
CSLFetchBoolean(m_poDS->papszCreationOptions, "WRITE_GDAL_TAGS", TRUE));
m_bUseStringInNC4 =
CPL_TO_BOOL(CSLFetchBoolean(papszOptions, "USE_STRING_IN_NC4", TRUE));
m_bNCDumpCompat =
CPL_TO_BOOL(CSLFetchBoolean(papszOptions, "NCDUMP_COMPAT", TRUE));
std::vector<std::pair<CPLString, int>> aoAutoVariables;
const char *pszFeatureType =
CSLFetchNameValue(papszOptions, "FEATURE_TYPE");
if (pszFeatureType != nullptr)
{
if (EQUAL(pszFeatureType, "POINT"))
{
if (wkbFlatten(m_poFeatureDefn->GetGeomType()) != wkbPoint)
{
CPLError(CE_Warning, CPLE_NotSupported,
"FEATURE_TYPE=POINT only supported for Point layer "
"geometry type.");
}
}
else if (EQUAL(pszFeatureType, "PROFILE"))
{
if (wkbFlatten(m_poFeatureDefn->GetGeomType()) != wkbPoint)
{
CPLError(CE_Warning, CPLE_NotSupported,
"FEATURE_TYPE=PROFILE only supported for Point layer "
"geometry type.");
}
else
{
// Cf
// http://cfconventions.org/cf-conventions/v1.6.0/cf-conventions.html#_indexed_ragged_array_representation_of_profiles
m_osProfileDimName = CSLFetchNameValueDef(
papszOptions, "PROFILE_DIM_NAME", "profile");
m_osProfileVariables =
CSLFetchNameValueDef(papszOptions, "PROFILE_VARIABLES", "");
const char *pszProfileInitSize = CSLFetchNameValueDef(
papszOptions, "PROFILE_DIM_INIT_SIZE",
(m_poDS->eFormat == NCDF_FORMAT_NC4) ? "UNLIMITED" : "100");
m_bProfileVarUnlimited = EQUAL(pszProfileInitSize, "UNLIMITED");
size_t nProfileInitSize =
m_bProfileVarUnlimited
? NC_UNLIMITED
: static_cast<size_t>(atoi(pszProfileInitSize));
int status = nc_def_dim(m_nLayerCDFId, m_osProfileDimName,
nProfileInitSize, &m_nProfileDimID);
NCDF_ERR(status);
if (status != NC_NOERR)
return false;
status = nc_def_var(m_nLayerCDFId, m_osProfileDimName, NC_INT,
1, &m_nProfileDimID, &m_nProfileVarID);
NCDF_ERR(status);
if (status != NC_NOERR)
return false;
aoAutoVariables.push_back(
std::pair(m_osProfileDimName, m_nProfileVarID));
status =
nc_put_att_text(m_nLayerCDFId, m_nProfileVarID, "cf_role",
strlen("profile_id"), "profile_id");
NCDF_ERR(status);
}
}
else if (!EQUAL(pszFeatureType, "AUTO"))
{
CPLError(CE_Warning, CPLE_NotSupported,
"FEATURE_TYPE=%s not supported.", pszFeatureType);
}
}
const OGRSpatialReference *poSRS = nullptr;
if (m_poFeatureDefn->GetGeomFieldCount())
poSRS = m_poFeatureDefn->GetGeomFieldDefn(0)->GetSpatialRef();
int status;
if (m_bLegacyCreateMode)
{
if (m_bWriteGDALTags)
{
status = nc_put_att_text(m_nLayerCDFId, NC_GLOBAL, "ogr_layer_name",
strlen(m_poFeatureDefn->GetName()),
m_poFeatureDefn->GetName());
NCDF_ERR(status);
}
status = nc_def_dim(m_nLayerCDFId, m_osRecordDimName, NC_UNLIMITED,
&m_nRecordDimID);
NCDF_ERR(status);
if (status != NC_NOERR)
return false;
if (!m_osProfileDimName.empty())
{
status = nc_def_var(m_nLayerCDFId, "parentIndex", NC_INT, 1,
&m_nRecordDimID, &m_nParentIndexVarID);
NCDF_ERR(status);
if (status != NC_NOERR)
return false;
aoAutoVariables.push_back(
std::pair("parentIndex", m_nParentIndexVarID));
status =
nc_put_att_text(m_nLayerCDFId, m_nParentIndexVarID, CF_LNG_NAME,
strlen("index of profile"), "index of profile");
NCDF_ERR(status);
status = nc_put_att_text(
m_nLayerCDFId, m_nParentIndexVarID, "instance_dimension",
m_osProfileDimName.size(), m_osProfileDimName.c_str());
NCDF_ERR(status);
}
if (wkbFlatten(m_poFeatureDefn->GetGeomType()) == wkbPoint)
{
const int nPointDim =
!m_osProfileDimName.empty() ? m_nProfileDimID : m_nRecordDimID;
const bool bIsGeographic =
(poSRS == nullptr || poSRS->IsGeographic());
const char *pszXVarName =
bIsGeographic ? CF_LONGITUDE_VAR_NAME : CF_PROJ_X_VAR_NAME;
status = nc_def_var(m_nLayerCDFId, pszXVarName, NC_DOUBLE, 1,
&nPointDim, &m_nXVarID);
NCDF_ERR(status);
if (status != NC_NOERR)
{
return false;
}
const char *pszYVarName =
bIsGeographic ? CF_LATITUDE_VAR_NAME : CF_PROJ_Y_VAR_NAME;
status = nc_def_var(m_nLayerCDFId, pszYVarName, NC_DOUBLE, 1,
&nPointDim, &m_nYVarID);
NCDF_ERR(status);
if (status != NC_NOERR)
{
return false;
}
aoAutoVariables.push_back(std::pair(pszXVarName, m_nXVarID));
aoAutoVariables.push_back(std::pair(pszYVarName, m_nYVarID));
m_nXVarNCDFType = NC_DOUBLE;
m_nYVarNCDFType = NC_DOUBLE;
m_uXVarNoData.dfVal = NC_FILL_DOUBLE;
m_uYVarNoData.dfVal = NC_FILL_DOUBLE;
m_osCoordinatesValue = pszXVarName;
m_osCoordinatesValue += " ";
m_osCoordinatesValue += pszYVarName;
if (poSRS == nullptr || poSRS->IsGeographic())
{
// Deal with potentional issues of multiple groups
NCDFWriteLonLatVarsAttributes(layerVID, m_nXVarID, m_nYVarID);
}
else if (poSRS->IsProjected())
{
// Deal with potentional issues of multiple groups
NCDFWriteXYVarsAttributes(layerVID, m_nXVarID, m_nYVarID,
poSRS);
}
if (m_poFeatureDefn->GetGeomType() == wkbPoint25D)
{
const char *pszZVarName = "z";
status = nc_def_var(m_nLayerCDFId, pszZVarName, NC_DOUBLE, 1,
&m_nRecordDimID, &m_nZVarID);
NCDF_ERR(status);
if (status != NC_NOERR)
{
return false;
}
aoAutoVariables.push_back(std::pair(pszZVarName, m_nZVarID));
m_nZVarNCDFType = NC_DOUBLE;
m_uZVarNoData.dfVal = NC_FILL_DOUBLE;
status =
nc_put_att_text(m_nLayerCDFId, m_nZVarID, CF_LNG_NAME,
strlen("z coordinate"), "z coordinate");
NCDF_ERR(status);
status = nc_put_att_text(m_nLayerCDFId, m_nZVarID, CF_STD_NAME,
strlen("height"), "height");
NCDF_ERR(status);
status = nc_put_att_text(m_nLayerCDFId, m_nZVarID, CF_AXIS,
strlen("Z"), "Z");
NCDF_ERR(status);
status = nc_put_att_text(m_nLayerCDFId, m_nZVarID, CF_UNITS,
strlen("m"), "m");
NCDF_ERR(status);
m_osCoordinatesValue += " ";
m_osCoordinatesValue += pszZVarName;
}
const char *pszFeatureTypeVal =
!m_osProfileDimName.empty() ? "profile" : "point";
status =
nc_put_att_text(m_nLayerCDFId, NC_GLOBAL, "featureType",
strlen(pszFeatureTypeVal), pszFeatureTypeVal);
NCDF_ERR(status);
}
else if (m_poFeatureDefn->GetGeomType() != wkbNone)
{
if (m_poDS->eFormat == NCDF_FORMAT_NC4 && m_bUseStringInNC4)
{
m_nWKTNCDFType = NC_STRING;
status =
nc_def_var(m_nLayerCDFId, m_osWKTVarName.c_str(), NC_STRING,
1, &m_nRecordDimID, &m_nWKTVarID);
}
else
{
m_nWKTNCDFType = NC_CHAR;
m_nWKTMaxWidth = atoi(CSLFetchNameValueDef(
papszOptions, "WKT_DEFAULT_WIDTH",
CPLSPrintf("%d", m_bAutoGrowStrings ? 1000 : 10000)));
status = nc_def_dim(
m_nLayerCDFId,
CPLSPrintf("%s_max_width", m_osWKTVarName.c_str()),
m_nWKTMaxWidth, &m_nWKTMaxWidthDimId);
NCDF_ERR(status);
if (status != NC_NOERR)
{
return false;
}
int anDims[2] = {m_nRecordDimID, m_nWKTMaxWidthDimId};
status = nc_def_var(m_nLayerCDFId, m_osWKTVarName.c_str(),
NC_CHAR, 2, anDims, &m_nWKTVarID);
}
NCDF_ERR(status);
if (status != NC_NOERR)
{
return false;
}
aoAutoVariables.push_back(std::pair(m_osWKTVarName, m_nWKTVarID));
status = nc_put_att_text(m_nLayerCDFId, m_nWKTVarID, CF_LNG_NAME,
strlen("Geometry as ISO WKT"),
"Geometry as ISO WKT");
NCDF_ERR(status);
// nc_put_att_text(m_nLayerCDFId, m_nWKTVarID, CF_UNITS,
// strlen("none"), "none");
if (m_bWriteGDALTags)
{
status = nc_put_att_text(
m_nLayerCDFId, NC_GLOBAL, "ogr_geometry_field",
m_osWKTVarName.size(), m_osWKTVarName.c_str());
NCDF_ERR(status);
CPLString osGeometryType =
OGRToOGCGeomType(m_poFeatureDefn->GetGeomType());
if (wkbHasZ(m_poFeatureDefn->GetGeomType()))
osGeometryType += " Z";
status = nc_put_att_text(
m_nLayerCDFId, NC_GLOBAL, "ogr_layer_type",
osGeometryType.size(), osGeometryType.c_str());
NCDF_ERR(status);
}
}
}
if (poSRS != nullptr)
{
char *pszCFProjection = nullptr;
m_sgCRSname = m_bLegacyCreateMode
? ""
: std::string(this->GetName()) + std::string("_crs");
int nSRSVarId =
NCDFWriteSRSVariable(m_nLayerCDFId, poSRS, &pszCFProjection,
m_bWriteGDALTags, m_sgCRSname);
if (nSRSVarId < 0)
return false;
if (pszCFProjection != nullptr)
{
aoAutoVariables.push_back(std::pair(pszCFProjection, nSRSVarId));
m_osGridMapping = pszCFProjection;
CPLFree(pszCFProjection);
}
if (m_nWKTVarID >= 0 && !m_osGridMapping.empty())
{
status = nc_put_att_text(m_nLayerCDFId, m_nWKTVarID, CF_GRD_MAPPING,
m_osGridMapping.size(),
m_osGridMapping.c_str());
NCDF_ERR(status);
}
}
if (m_poDS->oWriterConfig.m_bIsValid)
{
m_poLayerConfig = poLayerConfig;
netCDFWriteAttributesFromConf(m_nLayerCDFId, NC_GLOBAL,
m_poDS->oWriterConfig.m_aoAttributes);
if (poLayerConfig != nullptr)
{
netCDFWriteAttributesFromConf(m_nLayerCDFId, NC_GLOBAL,
poLayerConfig->m_aoAttributes);
}
for (size_t i = 0; i < aoAutoVariables.size(); i++)
{
const netCDFWriterConfigField *poConfig = nullptr;
CPLString osLookup = "__" + aoAutoVariables[i].first;
std::map<CPLString, netCDFWriterConfigField>::const_iterator oIter;
if (m_poLayerConfig != nullptr &&
(oIter = m_poLayerConfig->m_oFields.find(osLookup)) !=
m_poLayerConfig->m_oFields.end())
{
poConfig = &(oIter->second);
}
else if ((oIter = m_poDS->oWriterConfig.m_oFields.find(osLookup)) !=
m_poDS->oWriterConfig.m_oFields.end())
{
poConfig = &(oIter->second);
}
if (poConfig != nullptr)
{
netCDFWriteAttributesFromConf(m_nLayerCDFId,
aoAutoVariables[i].second,
poConfig->m_aoAttributes);
}
}
}
try
{
if (!m_bLegacyCreateMode)
{
// Write a geometry container
OGRwkbGeometryType geometryContainerType =
m_poFeatureDefn->GetGeomType();
std::vector<std::string> coordNames;
std::string strXVarName =
std::string(this->GetName()) + std::string("_coordX");
std::string strYVarName =
std::string(this->GetName()) + std::string("_coordY");
coordNames.push_back(strXVarName);
coordNames.push_back(strYVarName);
if (nccfdriver::OGRHasZandSupported(geometryContainerType))
{
std::string strZVarName =
std::string(this->GetName()) + std::string("_coordZ");
coordNames.push_back(strZVarName);
}
if (m_layerSGDefn.getWritableType() == nccfdriver::NONE)
{
throw nccfdriver::SG_Exception_BadFeature();
}
int writableSGContVarID = nccfdriver::write_Geometry_Container(
m_poDS->cdfid, this->GetName(), m_layerSGDefn.getWritableType(),
coordNames);
m_layerSGDefn.initializeNewContainer(writableSGContVarID);
if (newbufsize >= 4096)
{
m_poDS->bufManager.adjustLimit(newbufsize);
}
// Set record dim ID; POINT it's the node coordinate dim ID and
// everything else it's node count:
if (m_layerSGDefn.getWritableType() == nccfdriver::POINT)
{
m_nRecordDimID = m_layerSGDefn.get_node_coord_dimID();
m_osRecordDimName = std::string(this->GetName()) +
std::string("_") +
std::string(CF_SG_NODE_COORDINATES);
}
else
{
m_nRecordDimID = m_layerSGDefn.get_node_count_dimID();
m_osRecordDimName = std::string(this->GetName()) +
std::string("_") +
std::string(CF_SG_NODE_COUNT);
}
// Write the grid mapping, if it exists:
if (poSRS != nullptr)
{
status = nc_put_att_text(
m_nLayerCDFId, m_layerSGDefn.get_containerRealID(),
CF_GRD_MAPPING, strlen(m_sgCRSname.c_str()),
m_sgCRSname.c_str());
if (status != NC_NOERR)
{
throw nccfdriver::SGWriter_Exception_NCWriteFailure(
m_layerSGDefn.get_containerName().c_str(),
CF_GRD_MAPPING, "attribute");
}
const std::vector<int> &ncv =
m_layerSGDefn.get_nodeCoordVarIDs();
int xVar = ncv[0];
int yVar = ncv[1];
if (poSRS->IsGeographic())
{
NCDFWriteLonLatVarsAttributes(layerVID, xVar, yVar);
}
else if (poSRS->IsProjected())
{
NCDFWriteXYVarsAttributes(layerVID, xVar, yVar, poSRS);
}
}
}
}
catch (nccfdriver::SG_Exception &sge)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"An error occurred while writing metadata to the netCDF file.\n%s",
sge.get_err_msg());
return false;
}
m_poDS->SetDefineMode(false);
return true;
}
/************************************************************************/
/* SetRecordDimID() */
/************************************************************************/
void netCDFLayer::SetRecordDimID(int nRecordDimID)
{
m_nRecordDimID = nRecordDimID;
char szTemp[NC_MAX_NAME + 1];
szTemp[0] = 0;
int status = nc_inq_dimname(m_nLayerCDFId, m_nRecordDimID, szTemp);
NCDF_ERR(status);
m_osRecordDimName = szTemp;
}
/************************************************************************/
/* GetFillValue() */
/************************************************************************/
CPLErr netCDFLayer::GetFillValue(int nVarId, char **ppszValue)
{
if (NCDFGetAttr(m_nLayerCDFId, nVarId, _FillValue, ppszValue) == CE_None)
return CE_None;
return NCDFGetAttr(m_nLayerCDFId, nVarId, "missing_value", ppszValue);
}
CPLErr netCDFLayer::GetFillValue(int nVarId, double *pdfValue)
{
if (NCDFGetAttr(m_nLayerCDFId, nVarId, _FillValue, pdfValue) == CE_None)
return CE_None;
return NCDFGetAttr(m_nLayerCDFId, nVarId, "missing_value", pdfValue);
}
/************************************************************************/
/* GetNoDataValueForFloat() */
/************************************************************************/
void netCDFLayer::GetNoDataValueForFloat(int nVarId, NCDFNoDataUnion *puNoData)
{
double dfValue;
if (GetFillValue(nVarId, &dfValue) == CE_None)
puNoData->fVal = static_cast<float>(dfValue);
else
puNoData->fVal = NC_FILL_FLOAT;
}
/************************************************************************/
/* GetNoDataValueForDouble() */
/************************************************************************/
void netCDFLayer::GetNoDataValueForDouble(int nVarId, NCDFNoDataUnion *puNoData)
{
double dfValue;
if (GetFillValue(nVarId, &dfValue) == CE_None)
puNoData->dfVal = dfValue;
else
puNoData->dfVal = NC_FILL_DOUBLE;
}
/************************************************************************/
/* GetNoDataValue() */
/************************************************************************/
void netCDFLayer::GetNoDataValue(int nVarId, nc_type nVarType,
NCDFNoDataUnion *puNoData)
{
if (nVarType == NC_DOUBLE)
GetNoDataValueForDouble(nVarId, puNoData);
else if (nVarType == NC_FLOAT)
GetNoDataValueForFloat(nVarId, puNoData);
}
/************************************************************************/
/* SetXYZVars() */
/************************************************************************/
void netCDFLayer::SetXYZVars(int nXVarId, int nYVarId, int nZVarId)
{
m_nXVarID = nXVarId;
m_nYVarID = nYVarId;
m_nZVarID = nZVarId;
nc_inq_vartype(m_nLayerCDFId, m_nXVarID, &m_nXVarNCDFType);
nc_inq_vartype(m_nLayerCDFId, m_nYVarID, &m_nYVarNCDFType);
if ((m_nXVarNCDFType != NC_FLOAT && m_nXVarNCDFType != NC_DOUBLE) ||
(m_nYVarNCDFType != NC_FLOAT && m_nYVarNCDFType != NC_DOUBLE))
{
CPLError(CE_Warning, CPLE_NotSupported,
"X or Y variable of type X=%d,Y=%d not handled",
m_nXVarNCDFType, m_nYVarNCDFType);
m_nXVarID = -1;
m_nYVarID = -1;
}
if (m_nZVarID >= 0)
{
nc_inq_vartype(m_nLayerCDFId, m_nZVarID, &m_nZVarNCDFType);
if (m_nZVarNCDFType != NC_FLOAT && m_nZVarNCDFType != NC_DOUBLE)
{
CPLError(CE_Warning, CPLE_NotSupported,
"Z variable of type %d not handled", m_nZVarNCDFType);
m_nZVarID = -1;
}
}
if (m_nXVarID >= 0 && m_nYVarID >= 0)
{
char szVarName[NC_MAX_NAME + 1];
szVarName[0] = '\0';
CPL_IGNORE_RET_VAL(nc_inq_varname(m_nLayerCDFId, m_nXVarID, szVarName));
m_osCoordinatesValue = szVarName;
szVarName[0] = '\0';
CPL_IGNORE_RET_VAL(nc_inq_varname(m_nLayerCDFId, m_nYVarID, szVarName));
m_osCoordinatesValue += " ";
m_osCoordinatesValue += szVarName;
if (m_nZVarID >= 0)
{
szVarName[0] = '\0';
CPL_IGNORE_RET_VAL(
nc_inq_varname(m_nLayerCDFId, m_nZVarID, szVarName));
m_osCoordinatesValue += " ";
m_osCoordinatesValue += szVarName;
}
}
if (m_nXVarID >= 0)
GetNoDataValue(m_nXVarID, m_nXVarNCDFType, &m_uXVarNoData);
if (m_nYVarID >= 0)
GetNoDataValue(m_nYVarID, m_nYVarNCDFType, &m_uYVarNoData);
if (m_nZVarID >= 0)
GetNoDataValue(m_nZVarID, m_nZVarNCDFType, &m_uZVarNoData);
}
/************************************************************************/
/* SetWKTGeometryField() */
/************************************************************************/
void netCDFLayer::SetWKTGeometryField(const char *pszWKTVarName)
{
m_nWKTVarID = -1;
nc_inq_varid(m_nLayerCDFId, pszWKTVarName, &m_nWKTVarID);
if (m_nWKTVarID < 0)
return;
int nd;
nc_inq_varndims(m_nLayerCDFId, m_nWKTVarID, &nd);
nc_inq_vartype(m_nLayerCDFId, m_nWKTVarID, &m_nWKTNCDFType);
if (nd == 1 && m_nWKTNCDFType == NC_STRING)
{
int nDimID;
if (nc_inq_vardimid(m_nLayerCDFId, m_nWKTVarID, &nDimID) != NC_NOERR ||
nDimID != m_nRecordDimID)
{
m_nWKTVarID = -1;
return;
}
}
else if (nd == 2 && m_nWKTNCDFType == NC_CHAR)
{
int anDimIds[2] = {-1, -1};
size_t nLen = 0;
if (nc_inq_vardimid(m_nLayerCDFId, m_nWKTVarID, anDimIds) != NC_NOERR ||
anDimIds[0] != m_nRecordDimID ||
nc_inq_dimlen(m_nLayerCDFId, anDimIds[1], &nLen) != NC_NOERR)
{
m_nWKTVarID = -1;
return;
}
m_nWKTMaxWidth = static_cast<int>(nLen);
m_nWKTMaxWidthDimId = anDimIds[1];
}
else
{
m_nWKTVarID = -1;
return;
}
m_osWKTVarName = pszWKTVarName;
}
/************************************************************************/
/* SetGridMapping() */
/************************************************************************/
void netCDFLayer::SetGridMapping(const char *pszGridMapping)
{
m_osGridMapping = pszGridMapping;
}
/************************************************************************/
/* SetProfile() */
/************************************************************************/
void netCDFLayer::SetProfile(int nProfileDimID, int nParentIndexVarID)
{
m_nProfileDimID = nProfileDimID;
m_nParentIndexVarID = nParentIndexVarID;
if (m_nProfileDimID >= 0)
{
char szTemp[NC_MAX_NAME + 1];
szTemp[0] = 0;
int status = nc_inq_dimname(m_nLayerCDFId, m_nProfileDimID, szTemp);
NCDF_ERR(status);
m_osProfileDimName = szTemp;
nc_inq_varid(m_nLayerCDFId, m_osProfileDimName, &m_nProfileVarID);
m_bProfileVarUnlimited = NCDFIsUnlimitedDim(
m_poDS->eFormat == NCDF_FORMAT_NC4, m_nLayerCDFId, m_nProfileVarID);
}
}
/************************************************************************/
/* ResetReading() */
/************************************************************************/
void netCDFLayer::ResetReading()
{
if (!m_bLegacyCreateMode)
{
m_SGeometryFeatInd = 0;
}
else
{
m_nCurFeatureId = 1;
}
}
/************************************************************************/
/* Get1DVarAsDouble() */
/************************************************************************/
double netCDFLayer::Get1DVarAsDouble(int nVarId, nc_type nVarType,
size_t nIndex, NCDFNoDataUnion noDataVal,
bool *pbIsNoData)
{
double dfVal = 0;
if (nVarType == NC_DOUBLE)
{
nc_get_var1_double(m_nLayerCDFId, nVarId, &nIndex, &dfVal);
if (pbIsNoData)
*pbIsNoData = dfVal == noDataVal.dfVal;
}
else if (nVarType == NC_FLOAT)
{
float fVal = 0.f;
nc_get_var1_float(m_nLayerCDFId, nVarId, &nIndex, &fVal);
if (pbIsNoData)
*pbIsNoData = fVal == noDataVal.fVal;
dfVal = fVal;
}
else if (pbIsNoData)
*pbIsNoData = true;
return dfVal;
}
/************************************************************************/
/* GetNextRawFeature() */
/************************************************************************/
OGRFeature *netCDFLayer::GetNextRawFeature()
{
if (m_simpleGeometryReader.get() != nullptr)
{
if (m_SGeometryFeatInd >= m_simpleGeometryReader->get_geometry_count())
{
return nullptr;
}
OGRFeature *ft = nullptr;
try
{
ft = buildSGeometryFeature(m_SGeometryFeatInd);
m_SGeometryFeatInd++;
}
catch (nccfdriver::SG_Exception &sge)
{
CPLError(CE_Warning, CPLE_AppDefined,
"An error occurred while retrieving a feature.\n%s",
sge.get_err_msg());
}
return ft;
}
m_poDS->SetDefineMode(false);
// In update mode, nc_get_varXXX() doesn't return error if we are
// beyond the end of dimension
size_t nDimLen = 0;
nc_inq_dimlen(m_nLayerCDFId, m_nRecordDimID, &nDimLen);
if (m_nCurFeatureId > static_cast<GIntBig>(nDimLen))
return nullptr;
OGRFeature *poFeature = new OGRFeature(m_poFeatureDefn);
if (m_nParentIndexVarID >= 0)
{
int nProfileIdx = 0;
size_t nIdx = static_cast<size_t>(m_nCurFeatureId - 1);
int status = nc_get_var1_int(m_nLayerCDFId, m_nParentIndexVarID, &nIdx,
&nProfileIdx);
if (status == NC_NOERR && nProfileIdx >= 0)
{
nIdx = static_cast<size_t>(nProfileIdx);
FillFeatureFromVar(poFeature, m_nProfileDimID, nIdx);
}
}
if (!FillFeatureFromVar(poFeature, m_nRecordDimID,
static_cast<size_t>(m_nCurFeatureId - 1)))
{
m_nCurFeatureId++;
delete poFeature;
return nullptr;
}
poFeature->SetFID(m_nCurFeatureId);
m_nCurFeatureId++;
return poFeature;
}
/************************************************************************/
/* FillFeatureFromVar() */
/************************************************************************/
bool netCDFLayer::FillFeatureFromVar(OGRFeature *poFeature, int nMainDimId,
size_t nIndex)
{
size_t anIndex[2];
anIndex[0] = nIndex;
anIndex[1] = 0;
for (int i = 0; i < m_poFeatureDefn->GetFieldCount(); i++)
{
if (m_aoFieldDesc[i].nMainDimId != nMainDimId && m_bLegacyCreateMode)
continue;
switch (m_aoFieldDesc[i].nType)
{
case NC_CHAR:
{
if (m_aoFieldDesc[i].nDimCount == 1)
{
char szVal[2] = {0, 0};
int status = nc_get_var1_text(
m_nLayerCDFId, m_aoFieldDesc[i].nVarId, anIndex, szVal);
if (status != NC_NOERR)
{
NCDF_ERR(status);
continue;
}
poFeature->SetField(i, szVal);
}
else
{
size_t anCount[2];
anCount[0] = 1;
anCount[1] = 0;
nc_inq_dimlen(m_nLayerCDFId, m_aoFieldDesc[i].nSecDimId,
&(anCount[1]));
char *pszVal = (char *)CPLCalloc(1, anCount[1] + 1);
int status =
nc_get_vara_text(m_nLayerCDFId, m_aoFieldDesc[i].nVarId,
anIndex, anCount, pszVal);
if (status != NC_NOERR)
{
NCDF_ERR(status);
CPLFree(pszVal);
continue;