int main (int nNumberofArgs,char *argv[])
{
//Test for correct input arguments
if (nNumberofArgs!=7)
{
cout << "FATAL ERROR: wrong number of inputs. The program needs the path (with trailing slash), the filename prefix, window radius, ";
cout << "basin order, a switch to use or exclude floodplains and a switch to write rasters if desired." << endl;
exit(EXIT_SUCCESS);
}
//load input arguments
string path = argv[1];
string filename = argv[2];
float window_radius = atof(argv[3]); //6
int BasinOrder = atoi(argv[4]); //2
int FloodplainSwitch = atoi(argv[5]);
int WriteRasters = atoi(argv[6]); //0 (do not write rasters) or 1 (write rasters)
//set boundary conditions
vector<string> BoundaryConditions(4, "No Flux");
//load dem
LSDRaster DEM((path+filename+"_dem"), "flt");
//Fill
float MinSlope = 0.0001;
LSDRaster FilledDEM = DEM.fill(MinSlope);
//surface fitting
vector<int> raster_selection;
raster_selection.push_back(0);
raster_selection.push_back(1); //slope
raster_selection.push_back(1); //aspect
raster_selection.push_back(1); //curvature
raster_selection.push_back(1); //plan curvature
raster_selection.push_back(0);
raster_selection.push_back(0);
raster_selection.push_back(0);
vector<LSDRaster> Surfaces = FilledDEM.calculate_polyfit_surface_metrics(window_radius, raster_selection);
LSDRaster slope = Surfaces[1];
LSDRaster aspect = Surfaces[2];
cout << "\nGetting drainage network and basins\n" << endl;
// get a flow info object
LSDFlowInfo FlowInfo(BoundaryConditions,FilledDEM);
//get stream net from channel heads
vector<int> sources = FlowInfo.Ingest_Channel_Heads((path+filename+"_dem_CH"), "flt"); //swap to csv?
LSDJunctionNetwork ChanNetwork(sources, FlowInfo);
LSDIndexRaster StreamNetwork = ChanNetwork.StreamOrderArray_to_LSDIndexRaster();
//load floodplain and merge with the channel network if required, otherwise the
//floodplain mask will only contain the channel data
LSDIndexRaster ChannelAndFloodplain;
if (FloodplainSwitch == 1){
LSDIndexRaster Floodplains((path+filename+"_FloodPlain"), "flt");
ChannelAndFloodplain = StreamNetwork.MergeChannelWithFloodplain(Floodplains);
}
else{
ChannelAndFloodplain = StreamNetwork;
}
//Extract basins based on input stream order
vector< int > basin_junctions = ChanNetwork.ExtractBasinJunctionOrder(BasinOrder, FlowInfo);
LSDIndexRaster Basin_Raster = ChanNetwork.extract_basins_from_junction_vector(basin_junctions, FlowInfo);
cout << "\nExtracting hilltops and hilltop curvature" << endl;
// extract hilltops - no critical slope filtering is performed here
LSDRaster hilltops = ChanNetwork.ExtractRidges(FlowInfo);
//get hilltop curvature using filter to remove positive curvatures
LSDRaster cht_raster = FilledDEM.get_hilltop_curvature(Surfaces[3], hilltops);
LSDRaster CHT = FilledDEM.remove_positive_hilltop_curvature(cht_raster);
//get d infinity flowdirection and flow area
Array2D<float> dinf = FilledDEM.D_inf_FlowDir();
LSDRaster dinf_rast = FilledDEM.LSDRasterTemplate(dinf);
LSDRaster DinfArea = FilledDEM.D_inf_units();
cout << "Starting hilltop flow routing\n" << endl;
//start of Hilltop flow routing
string prefix = (path+filename+"_dreich_"); //set a path to write the hillslope length data to, based on the input path and filename given by the user
// these params do not need changed during normal use of the HFR algorithm
bool print_paths_switch = false;
int thinning = 1;
string trace_path = "";
bool basin_filter_switch = false;
vector<int> Target_Basin_Vector;
//run HFR
vector< Array2D<float> > HFR_Arrays = FlowInfo.HilltopFlowRouting(FilledDEM, hilltops, slope, ChannelAndFloodplain, aspect, prefix, Basin_Raster, Surfaces[4], print_paths_switch, thinning, trace_path, basin_filter_switch, Target_Basin_Vector);
LSDRaster HFR_LH = hilltops.LSDRasterTemplate(HFR_Arrays[1]);
LSDRaster HFR_Slope = hilltops.LSDRasterTemplate(HFR_Arrays[2]);
LSDRaster relief = hilltops.LSDRasterTemplate(HFR_Arrays[3]);
//end of HFR
//create lsdbasin objects in a loop over each junction number
vector< LSDBasin > Basins;
//slope area plotting parameters - these defaults are usually fine
float log_bin_width = 0.1;
int SplineResolution = 10000;
int bin_threshold = 0;
float CriticalSlope = 1.2; //this needs modified to generate proper E*R* data
cout << "\nCreating each LSDBasin" << endl;
//loop over each basin, generating an LSDBasin object which contains that basin's measurements
for (int w = 0; w < int(basin_junctions.size()); ++w){
cout << (w+1) << " / " << basin_junctions.size() << endl;
LSDBasin Basin(basin_junctions[w], FlowInfo, ChanNetwork);
Basin.set_FlowLength(StreamNetwork, FlowInfo);
Basin.set_DrainageDensity();
Basin.set_all_HillslopeLengths(FlowInfo, HFR_LH, slope, DinfArea, log_bin_width, SplineResolution, bin_threshold);
Basin.set_SlopeMean(FlowInfo, slope);
Basin.set_AspectMean(FlowInfo, aspect);
Basin.set_ElevationMean(FlowInfo, FilledDEM);
Basin.set_ReliefMean(FlowInfo, relief);
Basin.set_CHTMean(FlowInfo, CHT);
Basin.set_EStar_RStar(CriticalSlope);
Basins.push_back(Basin);
}
//create a filestream to write the output data
// use the input arguments to generate a path and filename for the output file
ofstream WriteData;
stringstream ss;
ss << path << filename << "_dreich_PaperData.txt";
WriteData.open(ss.str().c_str());
//write headers
WriteData << "BasinID HFR_mean HFR_median HFR_stddev HFR_stderr HFR_Nvalues HFR_range HFR_min HFR_max SA_binned_LH SA_Spline_LH LH_Density Area Basin_Slope_mean Basin_Slope_median Basin_Slope_stddev Basin_Slope_stderr Basin_Slope_Nvalues Basin_Slope_range Basin_Slope_min Basin_Slope_max Basin_elev_mean Basin_elev_median Basin_elev_stddev Basin_elev_stderr Basin_elev_Nvalues Basin_elev_Range Basin_elev_min Basin_elev_max Aspect_mean CHT_mean CHT_median CHT_stddev CHT_stderr CHT_Nvalues CHT_range CHT_min CHT_max EStar RStar HT_Slope_mean HT_Slope_median HT_Slope_stddev HT_Slope_stderr HT_Slope_Nvalues HT_Slope_range HT_Slope_min HT_Slope_max HT_relief_mean HT_relief_median HT_relief_stddev HT_relief_stderr HT_relief_Nvalues HT_relief_range HT_relief_min HT_relief_max" << endl;
cout << "\nWriting data to file\n" << endl;
//write all data to the opened file, ensuring that there are data points to be written in each basin
for (int q = 0; q < int(Basins.size()); ++q){
// only work where we have data points
if (Basins[q].CalculateNumDataPoints(FlowInfo, HFR_LH) != 0 && Basins[q].CalculateNumDataPoints(FlowInfo, slope) != 0 && Basins[q].CalculateNumDataPoints(FlowInfo, FilledDEM) != 0 && Basins[q].CalculateNumDataPoints(FlowInfo, CHT) != 0 && Basins[q].CalculateNumDataPoints(FlowInfo, HFR_Slope) != 0 && Basins[q].CalculateNumDataPoints(FlowInfo, relief) != 0){
// BasinID
WriteData << Basins[q].get_Junction()<< " ";
//HFR
WriteData << Basins[q].get_HillslopeLength_HFR() << " " << Basins[q].CalculateBasinMedian(FlowInfo, HFR_LH) << " " << Basins[q].CalculateBasinStdDev(FlowInfo, HFR_LH) << " " << Basins[q].CalculateBasinStdError(FlowInfo, HFR_LH) << " " << Basins[q].CalculateNumDataPoints(FlowInfo, HFR_LH) << " " << Basins[q].CalculateBasinRange(FlowInfo, HFR_LH) << " " << Basins[q].CalculateBasinMin(FlowInfo, HFR_LH) << " " << Basins[q].CalculateBasinMax(FlowInfo, HFR_LH)<< " ";
//SA_Bins
WriteData << Basins[q].get_HillslopeLength_Binned()<< " ";
//SA_Spline
WriteData << Basins[q].get_HillslopeLength_Spline()<< " ";
//Density
WriteData << Basins[q].get_HillslopeLength_Density()<< " ";
//Area
WriteData << Basins[q].get_Area()<< " ";
//Slope_Basin
WriteData << Basins[q].get_SlopeMean() << " " << Basins[q].CalculateBasinMedian(FlowInfo, slope) << " " << Basins[q].CalculateBasinStdDev(FlowInfo, slope) << " " << Basins[q].CalculateBasinStdError(FlowInfo, slope) << " " << Basins[q].CalculateNumDataPoints(FlowInfo, slope) << " " << Basins[q].CalculateBasinRange(FlowInfo, slope) << " " << Basins[q].CalculateBasinMin(FlowInfo, slope) << " " << Basins[q].CalculateBasinMax(FlowInfo, slope)<< " ";
//Elev_Basin
WriteData << Basins[q].get_ElevationMean() << " " << Basins[q].CalculateBasinMedian(FlowInfo, FilledDEM) << " " << Basins[q].CalculateBasinStdDev(FlowInfo, FilledDEM) << " " << Basins[q].CalculateBasinStdError(FlowInfo, FilledDEM) << " " << Basins[q].CalculateNumDataPoints(FlowInfo, FilledDEM) << " " << Basins[q].CalculateBasinRange(FlowInfo, FilledDEM) << " " << Basins[q].CalculateBasinMin(FlowInfo, FilledDEM) << " " << Basins[q].CalculateBasinMax(FlowInfo, FilledDEM)<< " ";
//Aspect_Basin
WriteData << Basins[q].get_AspectMean()<< " ";
//CHT
WriteData << Basins[q].get_CHTMean() << " " << Basins[q].CalculateBasinMedian(FlowInfo, CHT) << " " << Basins[q].CalculateBasinStdDev(FlowInfo, CHT) << " " << Basins[q].CalculateBasinStdError(FlowInfo, CHT) << " " << Basins[q].CalculateNumDataPoints(FlowInfo, CHT) << " " << Basins[q].CalculateBasinRange(FlowInfo, CHT) << " " << Basins[q].CalculateBasinMin(FlowInfo, CHT) << " " << Basins[q].CalculateBasinMax(FlowInfo, CHT) << " ";
//EStar
WriteData << Basins[q].get_EStar()<< " ";
//RStar
WriteData << Basins[q].get_RStar()<< " ";
//Slope_mean
WriteData << Basins[q].CalculateBasinMean(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateBasinMedian(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateBasinStdDev(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateBasinStdError(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateNumDataPoints(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateBasinRange(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateBasinMin(FlowInfo, HFR_Slope) << " " << Basins[q].CalculateBasinMax(FlowInfo, HFR_Slope)<< " ";
//Relief_mean
WriteData << Basins[q].get_ReliefMean() << " " << Basins[q].CalculateBasinMedian(FlowInfo, relief) << " " << Basins[q].CalculateBasinStdDev(FlowInfo, relief) << " " << Basins[q].CalculateBasinStdError(FlowInfo, relief) << " " << Basins[q].CalculateNumDataPoints(FlowInfo, relief) << " " << Basins[q].CalculateBasinRange(FlowInfo, relief) << " " << Basins[q].CalculateBasinMin(FlowInfo, relief) << " " << Basins[q].CalculateBasinMax(FlowInfo, relief)<< "\n";
}
}
// close the output file
WriteData.close();
//if the user requests the raster to be written, write the rasters
if (WriteRasters == 1){
cout << "Writing Rasters\n" << endl;
// FilledDEM.write_raster((path+filename+"_Fill"), "flt");
Surfaces[1].write_raster((path+filename+"_dreich_Slope"),"flt");
//Surfaces[2].write_raster((path+filename+"_Aspect"),"flt");
//Surfaces[3].write_raster((path+filename+"_Curvature"),"flt");
//StreamNetwork.write_raster((path+filename+"_STNET"), "flt");
//Basin_Raster.write_raster((path+filename+"_Basins"), "flt");
CHT.write_raster((path+filename+"_dreich_CHT"),"flt");
HFR_LH.write_raster((path+filename+"_dreich_HFR_LH"),"flt");
HFR_Slope.write_raster((path+filename+"_dreich_HFR_SLP"),"flt");
relief.write_raster((path+filename+"_dreich_Relief"),"flt");
//perform a hillshade
//LSDRaster Hillshade = FilledDEM.hillshade(45.0,315.0,1.0);
//Hillshade.write_raster((path+filename+"_HS"),"flt");
}
}
int main (int nNumberofArgs,char *argv[])
{
//Test for correct input arguments
if (nNumberofArgs!=7)
{
cout << "FATAL ERROR: wrong number of inputs. The program needs the path (with trailing slash), the filename prefix, the DEM file format, the window radius, ";
cout << "basin order, and a switch to write rasters if desired." << endl;
exit(EXIT_SUCCESS);
}
//load input arguments
string Path = argv[1];
string Prefix = argv[2];
string DEM_Format = argv[3];
float window_radius = atof(argv[4]); //6
int BasinOrder = atoi(argv[5]); //2
int WriteRasters = atoi(argv[6]); //0 (do not write rasters) or 1 (write rasters)
//set up writers to write the output data
stringstream ssLH;
stringstream ssR;
ssLH << Path << Prefix << "_LHResData_variable.txt";
ssR << Path << Prefix << "_RResData_variable.txt";
ofstream WriteLHData;
WriteLHData.open(ssLH.str().c_str());
ofstream WriteRData;
WriteRData.open(ssR.str().c_str());
//write headers
WriteLHData << "resolution 2pc 25pc median mean 75pc 98pc minimum maximum" << endl;
WriteRData << "resolution 2pc 25pc median mean 75pc 98pc minimum maximum" << endl;
//set boundary conditions
vector<string> BoundaryConditions(4, "No Flux");
//array of resolutions to load
int Resolutions[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30};
for (int a = 0; a < 19; ++a){
cout << "Processing DEM " << a+1 << " of " << "19" << endl;
//create an output filename based on the dem name and the resolution
stringstream ss;
ss << Path << Prefix << "_" << Resolutions[a];
string Filename = ss.str();
//load dem
LSDRaster DEM((Filename + "_DEM"), DEM_Format);
stringstream ssa;
ssa << Path << Prefix << "_" << Resolutions[a] << "_variable";
string Filename_variable = ssa.str();
//Fill
float MinSlope = 0.0001;
LSDRaster FilledDEM = DEM.fill(MinSlope);
//surface fitting
vector<int> raster_selection;
raster_selection.push_back(0);
raster_selection.push_back(1); //slope
raster_selection.push_back(1); //aspect
raster_selection.push_back(1); //curvature
raster_selection.push_back(1); //plan curvature
raster_selection.push_back(0);
raster_selection.push_back(0);
raster_selection.push_back(0);
int CurrentWindowSize = window_radius;
vector<LSDRaster> Surfaces = FilledDEM.calculate_polyfit_surface_metrics(CurrentWindowSize, raster_selection);
LSDRaster slope = Surfaces[1];
LSDRaster aspect = Surfaces[2];
cout << "\nGetting drainage network and basins\n" << endl;
// get a flow info object
LSDFlowInfo FlowInfo(BoundaryConditions,FilledDEM);
//get stream net from channel heads
stringstream ss_ch;
ss_ch << Path << "Pelletier/" << Prefix << "_" << Resolutions[a] << "_CH";
vector<int> sources = FlowInfo.Ingest_Channel_Heads(ss_ch.str(), "bil");
LSDJunctionNetwork ChanNetwork(sources, FlowInfo);
LSDIndexRaster StreamNetwork = ChanNetwork.StreamOrderArray_to_LSDIndexRaster();
//Extract basins based on input stream order
vector< int > basin_junctions = ChanNetwork.ExtractBasinJunctionOrder(BasinOrder, FlowInfo);
LSDIndexRaster Basin_Raster = ChanNetwork.extract_basins_from_junction_vector(basin_junctions, FlowInfo);
cout << "\nExtracting hilltops and hilltop curvature" << endl;
// extract hilltops - no critical slope filtering is performed here
LSDRaster hilltops = ChanNetwork.ExtractRidges(FlowInfo);
//get hilltop curvature using filter to remove positive curvatures
LSDRaster cht_raster = FilledDEM.get_hilltop_curvature(Surfaces[3], hilltops);
LSDRaster CHT = FilledDEM.remove_positive_hilltop_curvature(cht_raster);
cout << "Starting hilltop flow routing\n" << endl;
// these params do not need changed during normal use of the HFR algorithm
bool print_paths_switch = false;
int thinning = 1;
string trace_path = "";
bool basin_filter_switch = false;
vector<int> Target_Basin_Vector;
//run HFR
vector< Array2D<float> > HFR_Arrays = FlowInfo.HilltopFlowRouting(FilledDEM, hilltops, slope, StreamNetwork, aspect, Filename_variable, Basin_Raster, Surfaces[4], print_paths_switch, thinning, trace_path, basin_filter_switch, Target_Basin_Vector);
LSDRaster HFR_LH = hilltops.LSDRasterTemplate(HFR_Arrays[1]);
LSDRaster relief = hilltops.LSDRasterTemplate(HFR_Arrays[3]);
//Filter Relief and LH data to remove any values < 2 pixels, as in Grieve et al (2015)
LSDRaster LH1 = HFR_LH.RemoveBelow(2.0*Resolutions[a]);
LSDRaster Relief1 = relief.RemoveBelow(2.0*Resolutions[a]);
//Filter Relief and LH data to remove any values > 10000
//These are created due to using 1m channel heads on low res data, and inadvertantly
//sampling nodata values, which gives us massive relief values
LSDRaster LH = LH1.RemoveAbove(10000);
LSDRaster Relief = Relief1.RemoveAbove(10000);
//go through the lh raster and get every value into a 1D vector
vector<float> LH_vec = Flatten_Without_Nodata(LH.get_RasterData(), LH.get_NoDataValue());
vector<float> Boxplot = BoxPlot(LH_vec);
//write the values to the output file
WriteLHData << Resolutions[a] << " " << Boxplot[0] << " " << Boxplot[1] << " " << Boxplot[2] << " " << Boxplot[3] << " " << Boxplot[4] << " " << Boxplot[5] << " " << Boxplot[6] << " " << Boxplot[7];
WriteLHData << endl;
stringstream ss3;
ss3 << Path << Prefix << "_" << Resolutions[a] << "_Hist_LH_variable.txt";
print_histogram(LH_vec, 1, ss3.str());
//go through the relief raster and get every value into a 1D vector
vector<float> R_vec = Flatten_Without_Nodata(Relief.get_RasterData(), Relief.get_NoDataValue());
vector<float> Boxplot_R = BoxPlot(R_vec);
//write the values to the output file
WriteRData << Resolutions[a] << " " << Boxplot_R[0] << " " << Boxplot_R[1] << " " << Boxplot_R[2] << " " << Boxplot_R[3] << " " << Boxplot_R[4] << " " << Boxplot_R[5] << " " << Boxplot_R[6] << " " << Boxplot_R[7];
WriteRData << endl;
stringstream ss4;
ss4 << Path << Prefix << "_" << Resolutions[a] << "_Hist_R_variable.txt";
print_histogram(R_vec, 1, ss4.str());
//if the user requests the rasters to be written, write the rasters
if (WriteRasters == 1){
cout << "Writing Rasters\n" << endl;
Surfaces[1].write_raster((Filename + "_Slope_variable"), DEM_Format);
CHT.write_raster((Filename + "_CHT_variable"), DEM_Format);
LH.write_raster((Filename + "_HFR_LH_variable"), DEM_Format);
Relief.write_raster((Filename + "_Relief_variable"), DEM_Format);
}
}
WriteLHData.close();
WriteRData.close();
}