added more scripts too

guis/simple_hex_editor/main.ui

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>274</width>
+    <height>258</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Simple Hex Editor</string>
+  </property>
+  <widget class="QWidget" name="centralwidget"/>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>274</width>
+     <height>27</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menuMain">
+    <property name="title">
+     <string>Main</string>
+    </property>
+    <addaction name="actionExit"/>
+   </widget>
+   <widget class="QMenu" name="menuHelp">
+    <property name="title">
+     <string>Help</string>
+    </property>
+    <addaction name="actionInfo"/>
+   </widget>
+   <addaction name="menuMain"/>
+   <addaction name="menuHelp"/>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+  <action name="actionExit">
+   <property name="text">
+    <string>Exit</string>
+   </property>
+  </action>
+  <action name="actionInfo">
+   <property name="text">
+    <string>Iinfo</string>
+   </property>
+  </action>
+  <action name="actionTest">
+   <property name="text">
+    <string>Test</string>
+   </property>
+  </action>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

guis/simple_hex_editor/simple_hex_editor.py

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+#! /usr/bin/python2.7
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+
+import numpy as np
+
+from datetime import datetime
+
+from PIL import Image
+from PyQt4 import Qt, QtCore, QtGui, QtTest, uic
+
+# form_class_dialog = uic.loadUiType("info_dialog.ui")[0]
+form_class = uic.loadUiType("main.ui")[0]
+
+class MyWindowClass(QtGui.QMainWindow, form_class):
+
+    def __init__(self, parent=None):
+        QtGui.QMainWindow.__init__(self, parent)
+        self.setupUi(self)
+
+        self.actionExit.triggered.connect(self.actionExit_triggered)
+        # self.actionInfo.triggered.connect(self.action_Info_triggered)
+
+    def get_datetime_str(self):
+        return datetime.now().strftime("%Y%m%d%H%M%S")
+
+    def actionExit_triggered(self):
+        QtCore.QCoreApplication.instance().quit()
+
+
+if __name__ == "__main__":
+    app = QtGui.QApplication(sys.argv)
+    myWindow = MyWindowClass(None)
+    myWindow.show()
+    app.exec_()

math_functions/define_generic_functions.py

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+#! /usr/bin/python2.7
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+
+import numpy as np
+
+import matplotlib.pyplot as plt
+
+from os.path import expanduser
+
+def get_permutation_table(n):
+    return np.random.permutation(np.arange(0, n))
+
+if __name__ == "__main__":
+    home_path = expanduser("~")
+    print("home_path: {}".format(home_path))
+
+    m = 15
+    n = 40
+    a = np.random.randint(0, m, (n, ))
+    print("m: {}, n: {}".format(m, n))
+    print("a: {}".format(a))
+
+    perm_tbl = get_permutation_table(16)
+    print("perm_tbl:\n{}".format(perm_tbl))

picture_manipulation/soften_neighbourhood.py

@@ -0,0 +1,61 @@
+#! /usr/bin/python2.7
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+
+import numpy as np
+
+import matplotlib.pyplot as plt
+
+from os.path import expanduser
+
+def get_2d_idx_table(m, n):
+    idx_2d_table = np.zeros((m, n, 2)).astype(np.int)
+
+    idx_2d_table[:, :, 0] += np.arange(0, m).reshape((m, -1))
+    idx_2d_table[:, :, 1] += np.arange(0, n).reshape((-1, n))
+
+    return idx_2d_table
+
+if __name__ == "__main__":
+    home_path = expanduser("~")
+    print("home_path: {}".format(home_path))
+
+    idx_frame_3x3 = get_2d_idx_table(3, 3)
+    print("idx_frame_3x3:\n{}".format(idx_frame_3x3))
+
+    h = 5
+    w = 5
+
+    val_table = np.random.randint(0, 10, (h, w))
+    # print("val_table:\n{}".format(val_table))
+
+    val_table_ext_row = np.vstack((val_table[0],
+                                   val_table[:],
+                                   val_table[-1]))
+    # print("val_table_ext_row:\n{}".format(val_table_ext_row))
+
+    val_table_ext = np.hstack((val_table_ext_row[:, 0].reshape((-1, 1)),
+                               val_table_ext_row[:],
+                               val_table_ext_row[:, -1].reshape((-1, 1))))
+    print("val_table_ext:\n{}".format(val_table_ext))
+
+    j = 1
+    i = 2
+
+    m = 3
+    n = 3
+
+    idx_y_table = np.random.randint(0, h, (m*n, ))
+    idx_x_table = np.random.randint(0, w, (m*n, ))
+
+    print("idx_y_table:\n{}".format(idx_y_table))
+    print("idx_x_table:\n{}".format(idx_x_table))
+
+    idx_table = np.vstack((idx_y_table, idx_x_table))
+
+    print("idx_table:\n{}".format(idx_table))
+
+    new_vals = val_table[idx_table.tolist()].reshape((m, n))
+    print("new_vals:\n{}".format(new_vals))

test_programs/numpy_huge_matrix_calc.py

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+#! /usr/bin/python2.7
+
+import numpy as np
+
+from time import time
+
+a = np.random.random((1000, 10000))
+b = np.random.random((10000, 1000))
+
+start_time = time()
+c = np.dot(b, a)
+end_time = time()
+
+diff_time = end_time-start_time
+
+print("diff_time: {:.3f}s".format(diff_time))