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Robert M Lugg robertlugg

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robertlugg / DITHER.md
Created September 17, 2023 00:26
A Markdown formatted version of DHALF.TXT
@robertlugg
robertlugg / DHALF.TXT
Created September 16, 2023 23:54
# Source
Original source no longer exists but was apparently:
http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT,
based on a stackoverflow discussion:
https://stackoverflow.com/a/9150427/2184122
There are several authors. I am capturing the file because I think it is of great value. However, I am happy to remove it if requested.
The authors are: Lee Daniel Crocker, Paul Boulay, and Mike Morra
@robertlugg
robertlugg / LCD Tutorial 1.c
Last active March 2, 2022 21:20
STM32 LCD interfacing
/*
NOTE: This code had a bug which I edited in the browser to fix. UNTESTED.
Code to set up 8 pins for output to an LCD display.
This code sets up the 8 pins and turns on Port C, 6
#NEWBIEHACK
RL 03-01-2022
@robertlugg
robertlugg / TF2_datasets_understanding.md
Last active May 19, 2021 21:04
TFRecords: from_tensor vs from_tensor_slices

from_tensors vs. from_tensor_slices

From the manual

TFRecord files using tf.data The tf.data module also provides tools for reading and writing data in TensorFlow.

Writing a TFRecord file

The easiest way to get the data into a dataset is to use the from_tensor_slices method.

Applied to an array, it returns a dataset of scalars:




  


  




    


          
    

      

        
        

          

              @robertlugg
          

          

            
                robertlugg
                / simple_network.py
            
            

              Created
              August 3, 2020 20:22
            

              
                From discussion: https://groups.google.com/a/tensorflow.org/g/discuss/c/c0-oY9ajKfc/m/UYbokrc_BAAJ
              
          

        

      

        

  

    
    


        



  


  

        

          
          from tensorflow import keras
        

        

          
          import numpy as np
        

        

          
          from IPython import embed
        

        

          
          

        

        

          
          

        

        

          
          INPUT_SHAPE = (3, 3, 1)
        

        

          
          CONV_SIZE = 3
        

        

          
          model_name = 'test_model'
        

        

          
          

        

        

          
          def create_model():
        

  





    


  




    


          
    

      

        
        

          

              @robertlugg
          

          

            
                robertlugg
                / enumerate.py
            
            

              Created
              July 27, 2020 19:55
            

              
                Example iterating through multiple lists
              
          

        

      

        

  

    
    


        



  


  

        

          
          list_column_a = [1, 11, 22, 33]
        

        

          
          list_column_b = ['one', 'eleven', 'twenty two', 'thirty three']
        

        

          
          list_column_c = ['exciting', 'blah', 'somewhat ok', 'fishy']
        

        

          
          

        

        

          
          for idx, a in enumerate(list_column_a):
        

        

          
              print(f"{a}, {list_column_b[idx]}, {list_column_c[idx]}")
        

        

          
          

        

        

          
          for a, b, c in zip(list_column_a, list_column_b, list_column_c):
        

        

          
              print(f"{a}, {b}, {c}")
        

  





    


  




    


          
    

      

        
        

          

              @robertlugg
          

          

            
                robertlugg
                / sampler.html
            
            

              Created
              July 9, 2020 06:12
            

              
                carrd v1
              
          

        

      

        

  

    
    


        



  


  

        

          
          <!DOCTYPE HTML><html lang="en"><head><title>Sampler1</title><meta charset="utf-8" /><meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no" /><meta name="description" content="A sampler1" /><meta property="og:site_name" content="Sampler1" /><meta property="og:title" content="Sampler1" /><meta property="og:type" content="website" /><meta property="og:description" content="A sampler1" /><meta property="og:image" content="https://asampler1.carrd.co/assets/images/card.jpg?v82476884724951" /><meta property="og:image:type" content="image/jpeg" /><meta property="og:image:width" content="1280" /><meta property="og:image:height" content="800" /><meta property="og:url" content="https://asampler1.carrd.co" /><meta property="twitter:card" content="summary_large_image" /><style>html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,f
        

  





    


  




    


          
    

      

        
        

          

              @robertlugg
          

          

            
                robertlugg
                / VSCode Settings.md
            
            

              Created
              May 29, 2020 23:56
            

          

        

      

        

  

      

    
{
"editor.insertSpaces": true,
"editor.fontFamily": "JetBrains Mono, Cascadia Code PL,  Droid Sans Mono",
"editor.fontLigatures": true,
"editor.minimap.showSlider": "always",
"editor.multiCursorModifier": "ctrlCmd",
"editor.renderControlCharacters": true,
"editor.renderIndentGuides": true,
"editor.renderWhitespace": "boundary",
"editor.rulers": [100],



  


  




    


          
    

      

        
        

          

              @robertlugg
          

          

            
                robertlugg
                / timer.py
            
            

              Created
              April 15, 2020 15:59
            

              
                Timer that prints on same line. Example of CR without newline.
              
          

        

      

        

  

    
    


        



  


  

        

          
          import time
        

        

          
          

        

        

          
          counter = 0
        

        

          
          while counter < 10:
        

        

          
              print(f'\r{counter}', end='')
        

        

          
              time.sleep(1.0)
        

        

          
              counter += 1
        

        

          
          print("Done.")
        

  





    


  




    


          
    

      

        
        

          

              @robertlugg
          

          

            
                robertlugg
                / string_encrypt.py
            
            

              Created
              April 15, 2020 15:45
            

          

        

      

        

  

    
    


        



  


  

        

          
          # Fixed version.
        

        

          
          # Minimal changes to get it working
        

        

          
          my_string = "This is a bunch of words!"
        

        

          
          print(f'{my_string}')
        

        

          
          

        

        

          
          alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
        

        

          
          

        

        

          
          outputStr = ''
        

        

          
          for i in my_string:
        

        

          
              for idx, j in enumerate(alphabet):