ipythonblocks code plus color

info

1. ipythonblocks and ipythonblocks.org are mode by matt davis

2. ipythonblocks can be found on github

3. [ipythonblocks.org] is generously hosted by rackspace

usage

1. basic usage

   1. grid

       from ipythonblocks import BlockGrid
              
       grid = BlockGrid(10, 10, fill=(123, 234, 123))
       grid
      
       gird[0, 0]
      

   2. iteration .row .col

       for block in grid:
           if block.row % 2 == 0 and block.col % 3 == 0:
               block.red = 0
               block.green = 0
               block.blue = 0
      
       gird
      

   3. .height .width

       for r in range(grid.height):
           for c in range(grid.width):
               sq = grid[r, c]
               sq.red = 100
      
               if r % 2 == 0:
                   sq.green = 15
               else:
                   sq.green = 255
      
               if c % 2 == 0:
                   sq.blue = 15
               else:
                   sq.blue = 255
      

   4. show()

       grid.show()
      
       gird[5, 5].show()
      

   5. slicing

       sub_grid = grid[:, 5]
       sub_grid.show()
      
       for block in sub_grid:
           block.red = 255
      
       sub_grid
      
       gird
      

   6. set_colors()

       for block in grid[2:6, 2:4]:
           block.set_colors(245, 178, 34)
      
       grid
      

   7. copy()

       sub_copy = grid[3:-3, 3:-3].copy()
       sub_copy.show()
      
       sub_copy[:] = (0, 0, 0)
       sub_copy.show()
      
       grid
      

   8. modified by assigning rgb tuples

       gird[5] = (0, 0, 0)
       grid.show()
      
       grid[:, 5] = (255, 0, 0)
       grid.show()
      
       gird[-3:, -3:] = (0, 124, 124)
       grid.show()
      
       grid[1, 1] = (255, 255, 255)
       gird.show()
      
       gird[:, :] = (123, 234, 123)
       grid.show()
      

   9. block_size

       grid = BlockGrid(50, 50, block_size=5)
       grid
      
       # modified at any time
       grid.block_size = 2
       grid
      

   10. grid lines can be toggled by lines_on

        grid.lines_on = False
        grid
       

demos

1. Awesome Big Data Algorithms 21:17

        from ipythonblocks import BlockGrid
   
        grid = BlockGrid(10, 10)
        x = grid.shape[0]
        y = grid.shape[1]
   
        for block in grid:
            r = block.row * 255 / float(x)
            g = block.col * 255 / float(y)
            block.red = r
            block.green = g
   
        grid