Add colab URL

Author: ponnhide

README.md

@@ -19,7 +19,7 @@ If you want to use developmental version, it can be installed using the followin
 #### 03272022: Version 0.4.0 is released. 
 - Add docstring for each method and class 
 - Add some new methods of `patchworklib.Bricks` class to set common label, title, spine and colorbar for `Brick` objets in the `Bricks` object.  
-　For usage, please refer to the docstring or the example codes on [Google colab]().
+　For usage, please refer to the docstring or the example codes on [Google colab](https://colab.research.google.com/drive/1f06AQOqNnSYPjc9EkweC3_Hmy4abr-go?usp=sharing).
 
 #### 02042022: Version 0.3.6 is released. 
 - Sum bugs relating with the function to arrange multiple polar plot objects.

patchworklib/patchworklib.py

@@ -1330,9 +1330,9 @@ def set_index(self, index, x=None, y=None, **args):
         mx0, mx1, my0, my1 = self.get_middle_corner() 
         ix0, ix1, iy0, iy1 = self.get_inner_corner() 
         if x is None:
-            x =  -1.05 * (abs(ox0-mx0))/abs(mx1-mx0)
+            x =  -1.01 * (abs(ox0-mx0))/abs(mx1-mx0)
         if y is None:
-            y = 1.05 * abs(oy1-my0)/abs(my1-my0)
+            y = 1.01 * abs(oy1-my0)/abs(my1-my0)
         return self._case.text(x, y, index, **args)  
 
     def set_text(self, x, y, text, **args):