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LSDBasin.cpp
executable file
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LSDBasin.cpp
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#ifndef LSDBasin_CPP
#define LSDBasin_CPP
#include <vector>
#include <string>
#include <algorithm>
#include <iostream>
#include <fstream>
#include <math.h>
#include "TNT/tnt.h"
#include "LSDFlowInfo.hpp"
#include "LSDRaster.hpp"
#include "LSDIndexRaster.hpp"
#include "LSDIndexChannel.hpp"
#include "LSDJunctionNetwork.hpp"
#include "LSDStatsTools.hpp"
#include "LSDBasin.hpp"
#include "LSDParticle.hpp"
#include "LSDCRNParameters.hpp"
using namespace std;
using namespace TNT;
void LSDBasin::create()
{
// now we set up empty variables to store properties of the basin
// these are populated as they are required using the set methods in LSDBasin
SlopeMean = NoDataValue;
ElevationMean = NoDataValue;
AspectMean = NoDataValue;
ReliefMean = NoDataValue;
PlanCurvMean = NoDataValue;
ProfileCurvMean = NoDataValue;
TotalCurvMean = NoDataValue;
PlanCurvMax = NoDataValue;
ProfileCurvMax = NoDataValue;
TotalCurvMax = NoDataValue;
HillslopeLength_HFR = NoDataValue;
HillslopeLength_Binned = NoDataValue;
HillslopeLength_Spline = NoDataValue;
HillslopeLength_Density = NoDataValue;
FlowLength = NoDataValue;
DrainageDensity = NoDataValue;
Perimeter_i = vector<int>(1,NoDataValue);
Perimeter_j = vector<int>(1,NoDataValue);
Perimeter_nodes = vector<int>(1,NoDataValue);
CosmoErosionRate = NoDataValue;
OtherErosionRate = NoDataValue;
CHTMean = NoDataValue;
EStar = NoDataValue;
RStar = NoDataValue;
HilltopPx = NoDataValue;
BedrockFraction = NoDataValue;
Biomass = NoDataValue;
AlternativeIndex=int(NoDataValue);
//finished creating empty variables
}
void LSDBasin::create(int JunctionNumber, LSDFlowInfo& FlowInfo, LSDJunctionNetwork& ChanNet)
{
//NO BOUNDS CHECKING ON JunctionNumber
//setting all of the instance variables for the given junction
NRows = ChanNet.get_NRows();
NCols = ChanNet.get_NCols();
XMinimum = ChanNet.get_XMinimum();
YMinimum = ChanNet.get_YMinimum();
DataResolution = ChanNet.get_DataResolution();
NoDataValue = ChanNet.get_NoDataValue();
GeoReferencingStrings = ChanNet.get_GeoReferencingStrings();
Junction = JunctionNumber;
vector <int> JunctionVector = ChanNet.get_JunctionVector();
vector <int> ReceiverVector = ChanNet.get_ReceiverVector();
LSDIndexChannel StreamLinkVector = LSDIndexChannel(Junction, JunctionVector[Junction],
ReceiverVector[Junction], JunctionVector[ReceiverVector[Junction]], FlowInfo);
int n_nodes_in_channel = StreamLinkVector.get_n_nodes_in_channel();
int basin_outlet = StreamLinkVector.get_node_in_channel(n_nodes_in_channel-2);
BasinNodes = FlowInfo.get_upslope_nodes(basin_outlet);
NumberOfCells = int(BasinNodes.size());
Area = NumberOfCells * (DataResolution*DataResolution);
Beheaded = ChanNet.node_tester(FlowInfo, Junction);
FlowInfo.retrieve_current_row_and_col(ChanNet.get_Node_of_Junction(Junction), Outlet_i, Outlet_j);
vector<int> StreamOrderVector = ChanNet.get_StreamOrderVector();
BasinOrder = StreamOrderVector[Junction];
int i_max = 0;
int i_min = 9999999; //a very large number
int j_max = 0;
int j_min = 9999999; //a very large number
int i = 0;
int j = 0;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
if (i > i_max){i_max = i;}
else if (i < i_min){i_min = i;}
if (j > j_max){j_max = j;}
else if (j < j_min){j_min = j;}
}
Centroid_i = i_min + ((i_max - i_min)/2);
Centroid_j = j_min + ((j_max - j_min)/2); //how do these handle 0.5s ??
//finished setting all the instance variables
// now we set up empty variables to store properties of the basin
// these are populated as they are required using the set methods in LSDBasin
SlopeMean = NoDataValue;
ElevationMean = NoDataValue;
AspectMean = NoDataValue;
ReliefMean = NoDataValue;
PlanCurvMean = NoDataValue;
ProfileCurvMean = NoDataValue;
TotalCurvMean = NoDataValue;
PlanCurvMax = NoDataValue;
ProfileCurvMax = NoDataValue;
TotalCurvMax = NoDataValue;
HillslopeLength_HFR = NoDataValue;
HillslopeLength_Binned = NoDataValue;
HillslopeLength_Spline = NoDataValue;
HillslopeLength_Density = NoDataValue;
FlowLength = NoDataValue;
DrainageDensity = NoDataValue;
Perimeter_i = vector<int>(1,NoDataValue);
Perimeter_j = vector<int>(1,NoDataValue);
Perimeter_nodes = vector<int>(1,NoDataValue);
CosmoErosionRate = NoDataValue;
OtherErosionRate = NoDataValue;
CHTMean = NoDataValue;
EStar = NoDataValue;
RStar = NoDataValue;
BedrockFraction = NoDataValue;
Biomass = NoDataValue;
AlternativeIndex=int(NoDataValue);
//finished creating empty variables
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate mean basin value.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinMean(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
float TotalData = 0;
int CountNDV = 0;
float BasinAverage;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
//exclude NDV from average
if (Data.get_data_element(i,j) != NoDataValue){
TotalData += Data.get_data_element(i,j);
}
else {
++CountNDV;
}
}
BasinAverage = TotalData/(NumberOfCells-CountNDV);
return BasinAverage;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate max basin value.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinMax(LSDFlowInfo& FlowInfo, LSDRaster Data){
//could use max_element here? how would that cope with NDVs??
int i;
int j;
float MaxData = -10000000; //a very small number
float CurrentData;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
CurrentData = Data.get_data_element(i,j);
//exclude NDV
if (CurrentData != NoDataValue && CurrentData > MaxData){
MaxData = CurrentData;
}
}
return MaxData;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate min basin value.
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinMin(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
float MinData = 100000000; // a large number
float CurrentData;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
CurrentData = Data.get_data_element(i,j);
//exclude NDV
if (CurrentData != NoDataValue && CurrentData < MinData){
MinData = CurrentData;
}
}
return MinData;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate median basin value.
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinMedian(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
vector<float> UnsortedData;
vector<float> SortedData;
vector<size_t> index_map;
float Median;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
//exclude NDV
if (Data.get_data_element(i,j) != NoDataValue){
UnsortedData.push_back(Data.get_data_element(i,j));
}
}
//get size of dataset
size_t n = UnsortedData.size() / 2;
//sort all non NDV values
matlab_float_sort(UnsortedData, SortedData, index_map);
if (n % 2 != 0){
Median = (SortedData[n] + SortedData[n+1])/2;
}
else{
Median = SortedData[n];
}
return Median;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate Standard devaition of the basin values.
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinStdDev(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
vector<float> DataValues;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
//exclude NDV
if (Data.get_data_element(i,j) != NoDataValue){
DataValues.push_back(Data.get_data_element(i,j));
}
}
float mean = get_mean(DataValues);
float StdDev = get_standard_deviation(DataValues, mean);
return StdDev;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate Standard Error of the basin values.
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinStdError(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
vector<float> DataValues;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
//exclude NDV
if (Data.get_data_element(i,j) != NoDataValue){
DataValues.push_back(Data.get_data_element(i,j));
}
}
float mean = get_mean(DataValues);
float StdDev = get_standard_deviation(DataValues, mean);
float StdError = get_standard_error(DataValues, StdDev);
return StdError;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate basin range.
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
float LSDBasin::CalculateBasinRange(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
float MinData = 100000000; // a large number
float MaxData = -100000000; // a small number
float CurrentData;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
CurrentData = Data.get_data_element(i,j);
//exclude NDV
if (CurrentData != NoDataValue && CurrentData < MinData){
MinData = CurrentData;
}
if (CurrentData != NoDataValue && CurrentData > MaxData){
MaxData = CurrentData;
}
}
float Range = MaxData - MinData;
return Range;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate basin range.
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
int LSDBasin::CalculateNumDataPoints(LSDFlowInfo& FlowInfo, LSDRaster Data){
int i;
int j;
int count = 0;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
//exclude NDV
if (Data.get_data_element(i,j) != NoDataValue){
++count;
}
}
return count;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate E* and R* values for the basin, using hilltop flow routed hillslope
// lengths.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_EStar_RStar(float CriticalSlope){
EStar = (2 * (abs(CHTMean)) * HillslopeLength_HFR) / CriticalSlope;
RStar = ReliefMean / (HillslopeLength_HFR * CriticalSlope);
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate flow length for the basin using the D8 flow directions.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_FlowLength(LSDIndexRaster& StreamNetwork, LSDFlowInfo& FlowInfo){
int j;
int i;
float LengthSum = 0;
float two_times_root2 = 2.828427;
Array2D<int> FlowDir = FlowInfo.get_FlowDirection();
//Loop over every pixel and record it's stream length and basin ID in two vectors
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
if (StreamNetwork.get_data_element(i,j) != NoDataValue){
if ((FlowDir[i][j] % 2) != 0 && (FlowDir[i][j] != -1 )){ //is odd but not -1
LengthSum += (DataResolution * two_times_root2); //diagonal
}
else if (FlowDir[i][j] % 2 == 0){ //is even
LengthSum += DataResolution; //cardinal
}
}
}
FlowLength = LengthSum;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Calculate hillslope lengths from boomerang plots.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_HillslopeLengths_Boomerang(LSDRaster& Slope, LSDRaster& DinfArea, LSDFlowInfo& FlowInfo, float log_bin_width, int SplineResolution, float bin_threshold){
int j;
int i;
Array2D<float> slope(NRows, NCols, NoDataValue);
Array2D<float> area(NRows, NCols, NoDataValue);
//create subset arrays for just the basin data - this should be rolled into its own method.
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
slope[i][j] = Slope.get_data_element(i,j);
area[i][j] = DinfArea.get_data_element(i,j);
}
//do some log binning
vector<float> Mean_x_out;
vector<float> Mean_y_out;
vector<float> Midpoints_out;
vector<float> STDDev_x_out;
vector<float> STDDev_y_out;
vector<float> STDErr_x_out;
vector<float> STDErr_y_out;
vector<int> number_observations;
log_bin_data(area, slope, log_bin_width, Mean_x_out, Mean_y_out, Midpoints_out, STDDev_x_out, STDDev_y_out, STDErr_x_out, STDErr_y_out, number_observations, NoDataValue);
//remove empty bins
RemoveSmallBins(Mean_x_out, Mean_y_out, Midpoints_out, STDDev_x_out, STDDev_y_out, STDErr_x_out, STDErr_y_out, number_observations, bin_threshold);
//index value of max slope
int slope_max_index = distance(Mean_y_out.begin(), max_element(Mean_y_out.begin(), Mean_y_out.end()));
//hillslope length from the maximum binned values
HillslopeLength_Binned = Mean_x_out[slope_max_index]/DataResolution;
// Fit splines through the binned data to get the LH
vector<float> Spline_X;
vector<float> Spline_Y;
PlotCubicSplines(Mean_x_out, Mean_y_out, SplineResolution, Spline_X, Spline_Y);
//index value of max spline slope
int slope_max_index_spline = distance(Spline_Y.begin(), max_element(Spline_Y.begin(), Spline_Y.end()));
//hillslope length from spline curve
HillslopeLength_Spline = Spline_X[slope_max_index_spline]/DataResolution;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Generate data to create boomerang plots.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::Plot_Boomerang(LSDRaster& Slope, LSDRaster& DinfArea, LSDFlowInfo& FlowInfo, float log_bin_width, int SplineResolution, float bin_threshold, string Path){
int j;
int i;
Array2D<float> slope(NRows, NCols, NoDataValue);
Array2D<float> area(NRows, NCols, NoDataValue);
//create subset arrays for just the basin data - this should be rolled into its own method.
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
slope[i][j] = Slope.get_data_element(i,j);
area[i][j] = DinfArea.get_data_element(i,j);
}
//do some log binning
vector<float> Mean_x_out;
vector<float> Mean_y_out;
vector<float> Midpoints_out;
vector<float> STDDev_x_out;
vector<float> STDDev_y_out;
vector<float> STDErr_x_out;
vector<float> STDErr_y_out;
vector<int> number_observations;
log_bin_data(area, slope, log_bin_width, Mean_x_out, Mean_y_out, Midpoints_out, STDDev_x_out, STDDev_y_out, STDErr_x_out, STDErr_y_out, number_observations, NoDataValue);
//remove empty bins
RemoveSmallBins(Mean_x_out, Mean_y_out, Midpoints_out, STDDev_x_out, STDDev_y_out, STDErr_x_out, STDErr_y_out, number_observations, bin_threshold);
// Fit splines through the binned data to get the LH
vector<float> Spline_X;
vector<float> Spline_Y;
PlotCubicSplines(Mean_x_out, Mean_y_out, SplineResolution, Spline_X, Spline_Y);
//set up a filestream object to write the binned data
ofstream file;
stringstream ss_bin;
ss_bin << Path << Junction << "_boom_binned.txt";
file.open(ss_bin.str().c_str()); //needs a null terminated character array, not a string. See pg 181 of accelerated c++
for(int q = 0; q < int(Mean_x_out.size()); q++){
file << Mean_x_out[q] << " " << Mean_y_out[q] << " " << STDDev_x_out[q] << " " << STDDev_y_out[q] << " " << STDErr_x_out[q] << " " << STDErr_y_out[q] << endl;
}
file.close();
//set up a filestream object to write the spline data
ofstream SplineFile;
stringstream ss_spline;
ss_spline << Path << Junction << "_boom_spline.txt";
SplineFile.open(ss_spline.str().c_str()); //needs a null terminated character array, not a string. See pg 181 of accelerated c++
for(int q = 0; q < int(Spline_X.size()); q++){ //fixed bug here where I looped over the wrong vector - SWDG 7/11/13
SplineFile << Spline_X[q] << " " << Spline_Y[q] << endl;
}
SplineFile.close();
//set up a filestream object to write the data cloud
ofstream cloud;
stringstream ss_cloud;
ss_cloud << Path << Junction << "_boom_cloud.txt";
cloud.open(ss_cloud.str().c_str()); //needs a null terminated character array, not a string. See pg 181 of accelerated c++
for (int i = 1; i < NRows-1; ++i){
for (int j = 1; j < NCols-1; ++j){
if(area[i][j] != NoDataValue && slope[i][j] != NoDataValue){
cloud << area[i][j] << " " << slope[i][j] << endl;
}
}
}
cloud.close();
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Set the mean basin aspect. Does not use the normal basin mean method as angles
// need to be handled differently.
// Bug fixed in the average calculation when values wrapped around 0
// SWDG 17/2/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_AspectMean(LSDFlowInfo& FlowInfo, LSDRaster Aspect){
int i;
int j;
float avg_r;
float angle_r;
float x_component = 0.0;
float y_component = 0.0;
int ndv_cell_count = 0;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
if (Aspect.get_data_element(i,j) != NoDataValue){
angle_r = rad(Aspect.get_data_element(i,j));
x_component += cos(angle_r);
y_component += sin(angle_r);
}
else{
++ndv_cell_count;
}
}
avg_r = atan2(y_component, x_component);
AspectMean = deg(avg_r);
if (AspectMean < 0){
AspectMean = 360 + AspectMean;
}
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Set the perimeter pixels using a simple edge detection algorithm. This is quite
// messy and will be improved soon.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_Perimeter(LSDFlowInfo& FlowInfo){
int i;
int j;
vector<int> I;
vector<int> J;
vector<int> B;
int NDVCount = 0;
Array2D<float> BasinData(NRows, NCols, NoDataValue);
//create subset arrays for just the basin data - this should be rolled into its own method.
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
BasinData[i][j] = BasinNodes[q];
}
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
NDVCount = 0;
if (i != 0 && j != 0)
{
//count border cells that are NDV
if (BasinData[i-1][j-1] == NoDataValue){ ++NDVCount; }
if (BasinData[i][j-1] == NoDataValue){ ++NDVCount; }
if (BasinData[i+1][j-1] == NoDataValue){ ++NDVCount; }
if (BasinData[i-1][j] == NoDataValue){ ++NDVCount; }
if (BasinData[i+1][j] == NoDataValue){ ++NDVCount; }
if (BasinData[i-1][j+1] == NoDataValue){ ++NDVCount; }
if (BasinData[i][j+1] == NoDataValue){ ++NDVCount; }
if (BasinData[i+1][j+1] == NoDataValue){ ++NDVCount; }
if (NDVCount >= 1 && NDVCount < 8){ //increase the first value to get a simpler polygon (changed to 1 by FJC 23/03/15 to get only internal hilltops.
//edge pixel // Otherwise not all external ridges were being excluded from the analysis).
I.push_back(i);
J.push_back(j);
B.push_back(BasinNodes[q]);
}
}
else
{
++i;
}
}
//now have 2 vectors of i and j indexes of every point
Perimeter_i = I;
Perimeter_j = J;
Perimeter_nodes = B;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Set the four different hillslope length measurements for the basin.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_all_HillslopeLengths(LSDFlowInfo& FlowInfo, LSDRaster& HillslopeLengths, LSDRaster& Slope, LSDRaster& DinfArea, float log_bin_width, int SplineResolution, float bin_threshold){
set_HillslopeLength_HFR(FlowInfo, HillslopeLengths);
set_HillslopeLengths_Boomerang(Slope, DinfArea, FlowInfo, log_bin_width, SplineResolution, bin_threshold);
if (DrainageDensity != NoDataValue){
set_HillslopeLength_Density();
}
else{
cout << "\nDrainage Density has not been set, so the hillslope length cannot be set." << endl;
}
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Set all of the basin parameters with one call.
//
// Runs polyfit to get the elevation derivatives, so can be quite memory intensive. Method
// calls all the setters one by one, to populate all the basin parameters. So a
// basin can be created and all it's properties set with 2 calls. The erosion rates have default
// parameters of -9999 as these are rarely used variables.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_All_Parameters(LSDRaster& Elevation, LSDFlowInfo& FlowInfo, LSDRaster& CHT, LSDIndexRaster& StreamNetwork,
LSDRaster& HillslopeLengths, LSDRaster& Relief, float window_radius, float log_bin_width,
int SplineResolution, float bin_threshold, float CriticalSlope, float CosmoErosionRate,
float OtherErosionRate){
//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(1); //profile curvature
raster_selection.push_back(0);
raster_selection.push_back(0);
vector<LSDRaster> Surfaces = Elevation.calculate_polyfit_surface_metrics(window_radius, raster_selection);
LSDRaster TotalCurv = Surfaces[3];
LSDRaster ProfileCurv = Surfaces[5];
LSDRaster PlanCurv = Surfaces[4];
LSDRaster Aspect = Surfaces[2];
LSDRaster Slope = Surfaces[1];
LSDRaster DinfArea = Elevation.D_inf_units();
set_SlopeMean(FlowInfo, Slope);
set_ElevationMean(FlowInfo, Elevation);
set_ReliefMean(FlowInfo, Relief);
set_PlanCurvMean(FlowInfo, PlanCurv);
set_ProfileCurvMean(FlowInfo, ProfileCurv);
set_TotalCurvMean(FlowInfo, TotalCurv);
set_PlanCurvMax(FlowInfo, PlanCurv);
set_ProfileCurvMax(FlowInfo, ProfileCurv);
set_TotalCurvMax(FlowInfo, TotalCurv);
set_CHTMean(FlowInfo, CHT);
set_AspectMean(FlowInfo, Aspect);
set_FlowLength(StreamNetwork, FlowInfo);
set_DrainageDensity();
set_all_HillslopeLengths(FlowInfo, HillslopeLengths, Slope, DinfArea, log_bin_width, SplineResolution, bin_threshold);
set_Perimeter(FlowInfo);
set_EStar_RStar(CriticalSlope);
set_HilltopPx(FlowInfo, CHT);
set_CosmoErosionRate(CosmoErosionRate);
set_OtherErosionRate(OtherErosionRate);
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Write integer basin parameters into the shape of the basin.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_HilltopPx(LSDFlowInfo& FlowInfo, LSDRaster Hilltops){
int i;
int j;
int HilltopCount = 0;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
//only count hilltop pixels
if (Hilltops.get_data_element(i,j) != NoDataValue){
++HilltopCount;
}
}
HilltopPx = HilltopCount;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Write integer basin parameters into the shape of the basin.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
LSDIndexRaster LSDBasin::write_integer_data_to_LSDIndexRaster(int Param, LSDFlowInfo FlowInfo)
{
int i;
int j;
Array2D<int> Output(NRows, NCols, NoDataValue);
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
Output[i][j] = Param;
}
LSDIndexRaster OutputRaster(NRows, NCols, XMinimum, YMinimum, DataResolution,
NoDataValue, Output, GeoReferencingStrings);
return OutputRaster;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Write real basin parameters into the shape of the basin.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
LSDRaster LSDBasin::write_real_data_to_LSDRaster(float Param, LSDFlowInfo FlowInfo)
{
int i;
int j;
Array2D<float> Output(NRows, NCols, NoDataValue);
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
Output[i][j] = Param;
}
LSDRaster OutputRaster(NRows, NCols, XMinimum, YMinimum, DataResolution,
NoDataValue, Output, GeoReferencingStrings);
return OutputRaster;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Cookie cut data from an LSDRaster into the shape of the basin.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
LSDRaster LSDBasin::write_raster_data_to_LSDRaster(LSDRaster Data, LSDFlowInfo FlowInfo)
{
int i;
int j;
Array2D<float> Output(NRows, NCols, NoDataValue);
for (int q = 0; q < int(BasinNodes.size()); ++q)
{
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
Output[i][j] = Data.get_data_element(i,j);
}
LSDRaster OutputRaster(NRows, NCols, XMinimum, YMinimum, DataResolution,
NoDataValue, Output, GeoReferencingStrings);
return OutputRaster;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Cookie cut data from an LSDIndexRaster into the shape of the basin.
// SWDG 12/12/13
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
LSDIndexRaster LSDBasin::write_raster_data_to_LSDIndexRaster(LSDIndexRaster Data, LSDFlowInfo FlowInfo){
int i;
int j;
Array2D<int> Output(NRows, NCols, NoDataValue);
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
Output[i][j] = Data.get_data_element(i,j);
}
LSDIndexRaster OutputRaster(NRows, NCols, XMinimum, YMinimum, DataResolution,
NoDataValue, Output, GeoReferencingStrings);
return OutputRaster;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Function to check whether a node is in the basin
// FJC 21/02/14
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
int LSDBasin::is_node_in_basin(int test_node)
{
int node_checker = 0;
for (int i =0; i < int(BasinNodes.size()); i++)
{
if (test_node == BasinNodes[i])
{
node_checker = 1;
}
}
return node_checker;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Function to provide an alternative (integer) index (e.g. lithology) based on
// majority
// DTM 26/08/2015
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
void LSDBasin::set_AlternativeIndex(LSDFlowInfo& FlowInfo, LSDIndexRaster& AltIndex)
{
int max = 0;
int i,j;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
if(AltIndex.get_data_element(i,j)>max) max = AltIndex.get_data_element(i,j);
}
// for(int i=0; i<AltIndex.get_NRows(); ++i){
// for(int j=0; j<AltIndex.get_NCols(); ++j){
// if(AltIndex.get_data_element(i,j)>max) max=AltIndex.get_data_element(i,j);
// }
// }
vector<int> indices;
vector<int> counts;
for(int index = 0; index < max+1; ++index){
indices.push_back(index);
counts.push_back(0);
}
//cout << max << " " << indices.back() << endl;
for (int q = 0; q < int(BasinNodes.size()); ++q){
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], i, j);
++counts[AltIndex.get_data_element(i,j)];
}
vector<size_t> index_map;
matlab_int_sort(counts, counts, index_map);
matlab_int_reorder(indices,index_map,indices);
AlternativeIndex = indices.back();
//cout << "yoo hoo " << AlternativeIndex << endl;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Function to remove any hilltop curvature values that are not internal to the
// basin
// FJC 19/03/15
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
LSDRaster LSDBasin::keep_only_internal_hilltop_curvature(LSDRaster hilltop_curvature, LSDFlowInfo FlowInfo)
{
//Array2D<float> CHT_array(NRows, NCols, NoDataValue);
//Array2D<int> perimeter(NRows, NCols, 0);
//Array2D<int> ridge_pixels(NRows, NCols,0);
Array2D<float> CHT_array = hilltop_curvature.get_RasterData();
//cout << "Number of perimeter pixels: " << Perimeter_i.size() << endl;
for (int q =0; q < int(Perimeter_i.size()); q++){
int row_perim = Perimeter_i[q];
int col_perim = Perimeter_j[q];
if (row_perim != NoDataValue && col_perim != NoDataValue){
//perimeter[row_perim][col_perim] = 1;
CHT_array[row_perim][col_perim]=NoDataValue;
}
}
// for (int row = 0; row < NRows; row++)
//{
//for (int col = 0; col < NCols; col++)
//{
// float curvature = hilltop_curvature.get_data_element(row, col);
// if (curvature != NoDataValue)
// {
// ridge_pixels[row][col] = 1;
// }
//}
//}
//for (int row = 0; row < NRows; row++)
//{
//for (int col = 0; col < NCols; col++)
//{
// if (perimeter[row][col] == 0 || ridge_pixels[row][col] == 0)
// {
// float curvature = hilltop_curvature.get_data_element(row, col);
// CHT_array[row][col] = curvature;
// }
//}
//}
LSDRaster CHT(NRows, NCols, XMinimum, YMinimum, DataResolution, NoDataValue, CHT_array,GeoReferencingStrings);
return CHT;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// This function trims a padded raster to the basin
//
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
LSDRaster LSDBasin::TrimPaddedRasterToBasin(int padding_pixels, LSDFlowInfo& FlowInfo,
LSDRaster& Raster_Data)
{
int max_row = -1;
int max_col = -1;
int min_row = 1e8;
int min_col = 1e8;
int row,col;
for (int q = 0; q < int(BasinNodes.size()); ++q)
{
FlowInfo.retrieve_current_row_and_col(BasinNodes[q], row, col);
// get the maximum and minimum columns.
if(row > max_row)
{
max_row = row;
}
if(col > max_col)
{
max_col = col;
}
if(row < min_row)