void
AmrAdv::WritePlotFile () const
{
const std::string& plotfilename = PlotFileName(istep[0]);
const auto& mf = PlotFileMF();
const auto& varnames = PlotFileVarNames();
BoxLib::WriteMultiLevelPlotfile(plotfilename, finest_level+1, mf, varnames,
Geom(), t_new[0], istep, refRatio());
}
// [[Rcpp::export]]
XPtrImage magick_image_houghline( XPtrImage input, std::string geomstr,
std::string col, std::string bg, double lwd){
#if MagickLibVersion >= 0x689
Magick::Geometry geom(Geom(geomstr.c_str()));
XPtrImage output = copy(input);
for(size_t i = 0; i < output->size(); i++){
output->at(i).strokeColor(Magick::Color(col.c_str()));
output->at(i).backgroundColor(Magick::Color(bg.c_str()));
output->at(i).strokeWidth(lwd);
output->at(i).houghLine(geom.width(), geom.height(), geom.xOff());
}
return output;
#else
throw std::runtime_error("houghline not supported, ImageMagick too old");
#endif
}
// [[Rcpp::export]]
XPtrImage magick_image_canny( XPtrImage input, std::string geomstr){
#if MagickLibVersion >= 0x689
Magick::Geometry geom(Geom(geomstr.c_str()));
if(!geom.percent())
throw std::runtime_error("Canny edge upper/lower must be specified in percentage");
double radius = geom.width();
double sigma = geom.height();
double lower = geom.xOff() / 100.0;
double upper = geom.yOff() / 100.0;
XPtrImage output = copy(input);
for(size_t i = 0; i < output->size(); i++)
output->at(i).cannyEdge(radius, sigma, lower, upper);
return output;
#else
throw std::runtime_error("cany edge not supported, ImageMagick too old");
#endif
}
void SpatiaLiteDB::queryGeometry(
std::string table,
std::string geometry_col,
double left,
double bottom,
double right,
double top,
std::string label_col) {
_pointlist.clear();
_linestringlist.clear();
_polygonlist.clear();
bool getLabel = label_col.size() != 0;
// Search for geometry and name
// The query will be either
//
// SELECT Geometry FROM table WHERE MbrWithin(Column, BuildMbr(left, bottom, right, top));
// or
// SELECT Geometry,Label FROM table WHERE MbrWithin(Column, BuildMbr(left, bottom, right, top));
//
// where Geometry is the geometry column name and Label is the column containing a name or label.
std::string label;
if (getLabel) {
label = "," + label_col;
}
std::stringstream s;
s <<
"SELECT " <<
geometry_col <<
label <<
" FROM " <<
table <<
" WHERE MbrIntersects(" <<
geometry_col <<
", BuildMbr(" <<
left <<
"," <<
bottom <<
"," <<
right <<
"," <<
top <<
"));";
// prepare the query
prepare(s.str());
// fetch the next result row
while (step()) {
// get the geometry
gaiaGeomCollPtr geom = Geom(0);
// get the label, if we asked for it
std::string label;
if (getLabel) {
label = Text(1);
}
// the following will create lists for points, lines and polygons found in
// a single geometry. In practice it seems that only one of those types
// exists for a given geometry, but it's not clear if this is a requirement
// or just occurs in the sample databases we have been working with.
PointList points = point_list(geom, label);
for (PointList::iterator i = points.begin(); i != points.end(); i++) {
_pointlist.push_back(*i);
}
LinestringList lines = linestring_list(geom, label);
for (LinestringList::iterator i = lines.begin(); i != lines.end(); i++) {
_linestringlist.push_back(*i);
}
PolygonList polys = polygon_list(geom, label);
for (PolygonList::iterator i = polys.begin(); i != polys.end(); i++) {
_polygonlist.push_back(*i);
}
}
// finish with this query
finalize();
}