generate required metrics and plot them to one concise plot

.idea/.name

@@ -1 +1 @@
-vk_raytracing_tutorial
+utk_tests

.idea/misc.xml

@@ -3,7 +3,7 @@
   <component name="CMakePythonSetting">
     <option name="pythonIntegrationState" value="YES" />
   </component>
-  <component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$/raytracer">
+  <component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$/utk_experiments">
     <contentRoot DIR="$PROJECT_DIR$" />
   </component>
 </project>

utk_experiments/main.cpp

@@ -1,43 +1,88 @@
-#include <utk/utils/PointsetIO.hpp>
+#include "utk/metrics/PCF.hpp"
-#include <utk/utils/Pointset.hpp>
-#include <utk/samplers/SamplerStep.hpp>
 #include <utk/metrics/RadialSpectrum.hpp>
+#include <utk/samplers/SamplerStep.hpp>
+#include <utk/utils/Pointset.hpp>
+#include <utk/utils/PointsetIO.hpp>
 
 #define DIMENSION 1025
 #define NSAMPLES 4096
+#define NBINS 1000
+#define SEED 8970
 
-int main()
+template <typename T>
-{
+void writeSpectrumToFile(const std::string &filename, std::vector<T> spectrum) {
-  utk::Pointset<long double> points;
-
-  //sample points using heck
-  utk::SamplerStep sampler{
-      0.606,
-      8,
-  };
-
-  std::cout << "generating samples…" << std::endl;
-
-  if(sampler.generateSamples(points, NSAMPLES))
-  {
-    std::cout << "computing spectrum…" << std::endl;
-    auto result =  utk::Spectrum{DIMENSION, true}.compute(points);
-
-    std::ofstream pointFile;
-    pointFile.open("points.txt");
-    pointFile << NSAMPLES << std::endl;
-
-    write_text_pointset("points.txt", points);
-
   std::ofstream file;
-    file.open("spectrum.txt");
+  file.open(filename);
 
   file << DIMENSION << std::endl;
 
-    for(auto freq : result)
+  for (auto freq : spectrum) {
-    {
+    file << std::setprecision(std::numeric_limits<long double>::digits10 + 2)
-      file << std::setprecision(std::numeric_limits<long double>::digits10 + 2) << std::fixed;
+         << std::fixed;
     file << freq << std::endl;
   }
+}
+
+template <typename T>
+void writePCFToFile(const std::string &filename, std::vector<T> spectrum) {
+  std::ofstream file;
+  file.open(filename);
+
+  for (auto freq : spectrum) {
+    file << std::setprecision(std::numeric_limits<long double>::digits10 + 2)
+         << std::fixed;
+    file << freq << std::endl;
   }
 }
+
+template <typename T>
+void writeRadspecToFile(const std::string &filename,
+                        std::pair<std::vector<T>, std::vector<T>> radspec) {
+  std::ofstream file;
+  file.open(filename);
+
+  auto xs = radspec.first;
+  auto ys = radspec.second;
+
+  if (xs.size() != ys.size()) {
+    std::cerr << "Dimensions of radial spactrum are unequal: xDim: "
+              << xs.size() << " yDim: " << ys.size() << std::endl;
+    std::terminate();
+  }
+
+  for (int i = 0; i < xs.size(); ++i) {
+    file << std::setprecision(std::numeric_limits<long double>::digits10 + 2)
+         << std::fixed;
+    file << xs[i] << ", " << ys[i] << std::endl;
+  }
+}
+
+int main() {
+
+  // load Points from file and generate metrics
+  auto loadedPoints =
+      utk::read_pointsets<long double>("../result_data/sampled.txt")[0];
+  auto pointView =
+      utk::Pointset<long double>::View(loadedPoints.Data(), NSAMPLES, 2);
+
+  // Radial spectrum
+  std::cout << "Calculating radial spectrum with " << NBINS
+            << " bins and resolution " << DIMENSION << std::endl;
+  auto radSpec =
+      utk::RadialSpectrum(NBINS, 0.5, DIMENSION, true).compute(pointView);
+
+  writeRadspecToFile("radSpec.txt", radSpec);
+
+  // PCF
+  std::cout << "Calculating PCF with " << NBINS << " bins…" << std::endl;
+  auto pcf = utk::PCF{true, 0.01, 0.5, NBINS, 0.001}.compute(pointView);
+
+  writePCFToFile("pcf.txt", pcf);
+
+  // FFT based spectrum
+  std::cout << "Calculating spectrum with resolution " << DIMENSION << "…"
+            << std::endl;
+
+  auto spec = utk::Spectrum{DIMENSION, true}.compute(pointView);
+  writeSpectrumToFile("spectrum.txt", spec);
+}

utk_experiments/plotting/.ipynb_checkpoints/Untitled-checkpoint.ipynb

@@ -0,0 +1,6 @@
+{
+ "cells": [],
+ "metadata": {},
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

utk_experiments/result_data/radSpec.txt

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