Initial commit

.gitignore

@@ -127,3 +127,5 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+cfimdlp.cpp
+.vscode/*

FImdlp.cpp

@@ -0,0 +1,25 @@
+#include "FImdlp.h"
+namespace FImdlp
+{
+    FImdlp::FImdlp()
+    {
+    }
+    FImdlp::~FImdlp()
+    {
+    }
+    std::vector<float> FImdlp::cutPoints(std::vector<int> &X, std::vector<int> &y)
+    {
+        std::vector<float> cutPts;
+        int i, ant = X.at(0);
+        int n = X.size();
+        for (i = 1; i < n; i++)
+        {
+            if (X.at(i) != ant)
+            {
+                cutPts.push_back(float(X.at(i) + ant) / 2);
+                ant = X.at(i);
+            }
+        }
+        return cutPts;
+    }
+}

FImdlp.h

@@ -0,0 +1,15 @@
+#ifndef FIMDLP_H
+#define FIMDLP_H
+#include <vector>
+#include <Python.h>
+namespace FImdlp
+{
+    class FImdlp
+    {
+    public:
+        FImdlp();
+        ~FImdlp();
+        std::vector<float> cutPoints(std::vector<int> &, std::vector<int> &);
+    };
+}
+#endif

cfimdlp.pyx

@@ -0,0 +1,16 @@
+# distutils: language = c++
+# cython: language_level = 3
+from libcpp.vector cimport vector
+cdef extern from "FImdlp.h" namespace "FImdlp":
+    cdef cppclass FImdlp:
+        FImdlp() except + 
+        vector[float] cutPoints(vector[int]&, vector[int]&)
+
+cdef class CFImdlp:
+    cdef FImdlp *thisptr
+    def __cinit__(self):
+        self.thisptr = new FImdlp()
+    def __dealloc__(self):
+        del self.thisptr
+    def cut_points(self, X, y):
+        return self.thisptr.cutPoints(X, y)

pyproject.toml

@@ -0,0 +1,8 @@
+# pyproject.toml
+[build-system]
+requires = ["setuptools", "cython"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "FImdlp"
+version = "0.1.0"

sample.py

@@ -0,0 +1,14 @@
+import numpy as np
+from sklearn.datasets import load_iris
+from fimdlp import CFImdlp
+
+data = load_iris()
+X = data.data
+y = data.target
+features = data.feature_names
+test = CFImdlp()
+print("Cut points for each feature in Iris dataset:")
+for i in range(0, X.shape[1]):
+    data = np.sort(X[:, i])
+    Xcutpoints = test.cut_points(data, y)
+    print(f"{features[i]:20s}: {Xcutpoints}")

setup.py

@@ -0,0 +1,17 @@
+"""
+    Calling
+    $python setup.py build_ext --inplace
+    will build the extension library in the current file.
+"""
+
+from setuptools import Extension, setup
+
+setup(
+    ext_modules=[
+        Extension(
+            name="fimdlp",
+            sources=["cfimdlp.pyx", "FImdlp.cpp"],  
+            language="c++",  
+        ),
+    ]
+)