diff --git a/cpp/switchchain_canonical_creationfreqs.cpp b/cpp/switchchain_canonical_creationfreqs.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9007ff950edcbabe2e028b5890fa98b8cc565071
--- /dev/null
+++ b/cpp/switchchain_canonical_creationfreqs.cpp
@@ -0,0 +1,134 @@
+#include "exports.hpp"
+#include "graph.hpp"
+#include "graph_powerlaw.hpp"
+#include "graph_spectrum.hpp"
+#include "switchchain.hpp"
+#include <algorithm>
+#include <fstream>
+#include <iostream>
+#include <numeric>
+#include <random>
+#include <vector>
+
+
+int main(int argc, char* argv[]) {
+    // Simulation parameters
+    const int numVerticesMin = 10000;
+    const int numVerticesMax = 10000;
+    const int numVerticesStep = 1000;
+
+    float tauValues[] = {2.1f, 2.5f, 2.9f};
+
+    auto getMixingTime = [](int n, float tau) {
+        return int(100.0f * (50.0f - 5.0f * (tau - 2.0f)) * n);
+    };
+    auto getMeasurements = [](int n, float tau) {
+        (void)n;
+        (void)tau;
+        return 5000000;
+    };
+
+    // Output file
+    std::ofstream outfile;
+    if (argc >= 2)
+        outfile.open(argv[1]);
+    else
+        outfile.open("graphdata_canonical_creationfreqs.m");
+    if (!outfile.is_open()) {
+        std::cout << "ERROR: Could not open output file.\n";
+        return 1;
+    }
+
+    // Output Mathematica-style comment to indicate file contents
+    outfile << "(*\n";
+    outfile << "n from " << numVerticesMin << " to " << numVerticesMax
+            << " step " << numVerticesStep << std::endl;
+    outfile << "tauValues: " << tauValues << std::endl;
+    outfile << "Canonical degree sequence.\n";
+    outfile << "mixingTime: 100 * (50 - 5 (tau - 2)) n\n";
+    outfile << "measurements: 5000000\n";
+    outfile << "measureSkip: 0\n";
+    outfile << "histogram is conditioned on successful switches\n";
+    outfile << "data:\n";
+    outfile << "1: {n,tau}\n";
+    outfile << "2: { {delta1, freq1} , {delta2, freq2} , ... }\n";
+    outfile << "3: {successful switches, total attempted switches}\n";
+    outfile << "*)" << std::endl;
+
+    // Mathematica does not accept normal scientific notation
+    outfile << std::fixed;
+    outfile << '{' << '\n';
+    bool outputComma = false;
+
+    Graph g;
+    for (int numVertices = numVerticesMin; numVertices <= numVerticesMax;
+         numVertices += numVerticesStep) {
+        for (float tau : tauValues) {
+            DegreeSequence ds;
+            generateCanonicalPowerlawGraph(numVertices, tau, g, ds);
+
+            SwitchChain chain;
+            if (!chain.initialize(g)) {
+                std::cerr << "Could not initialize Markov chain.\n";
+                return 1;
+            }
+
+            std::cout << "Running (n,tau) = (" << numVertices << ',' << tau
+                      << "). " << std::flush;
+
+            // Mix
+            int mixingTime = getMixingTime(numVertices, tau);
+            for (int i = 0; i < mixingTime; ++i) {
+                chain.doMove();
+            }
+
+            std::cout << "Mixing done. " << std::flush;
+
+            int range = 500;
+            // Keep track of [-range, range]
+            std::vector<int> frequencies(2*range+1, 0);
+            // frequencies[x+range] corresponds to frequency of x
+            // clip anything outside of range to range!
+
+            int prevTriangles = chain.g.countTriangles();
+            chain.g.getTrackedTriangles() = prevTriangles;
+
+            int movesDone = 0;
+            int measurements = getMeasurements(numVertices, tau);
+            for (int i = 0; i < measurements; ++i) {
+                if (chain.doMove(true)) {
+                    ++movesDone;
+                    int newTriangles = chain.g.getTrackedTriangles();
+                    int diff = newTriangles - prevTriangles;
+                    prevTriangles = newTriangles;
+                    // Add 'diff' to histogram
+                    if (diff < -range)
+                        diff = -range;
+                    else if (diff > range)
+                        diff = range;
+                    frequencies[diff+range]++;
+                }
+            }
+
+            std::cout << "Measuring done. " << std::flush;
+
+            std::vector<std::pair<int, int>> histogram;
+            for (int i = -range; i <= range; ++i) {
+                histogram.push_back(std::make_pair(i, frequencies[i + range]));
+            }
+
+            if (outputComma)
+                outfile << ',' << '\n';
+            outputComma = true;
+
+            outfile << '{' << '{' << numVertices << ',' << tau << '}';
+            outfile << ',' << histogram;
+            outfile << ',' << '{' << movesDone << ',' << measurements << '}';
+            outfile << '}' << std::flush;
+
+            std::cout << "Output done." << std::endl;
+        }
+    }
+    outfile << '\n' << '}';
+    return 0;
+}