Uncharted

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• Head Arg Recurse Formula

    inspired by Is there a way to extract columns used in a formula? and Ian@JMPcomment.   dt = New Table( "Get Columns in Formula", Add Rows( 20 ), New Column( "H", Numeric, "Continuous", Format( "Best", 12 ), Formula( Random Uniform() ) ), New Column( "W", Numeric, "Continuous", Format( "Best", 12 ), Formula( Random Uniform() ) ), New Column( "D", Numeric, "Continuous", Format( "B...

  Craige_Hales

  Uncharted |

  Dec 24, 2017 7:31 AM

  9254 views | 0 replies
  

• Twitter Screen Scraping and FFT-Based Cross Fade

  Transform Use JSL to scrape images from Twitter and experiment with an FFT to cross fade the images.

  Craige_Hales

  Uncharted |

  Nov 27, 2017 12:41 PM

  2648 views | 0 replies
  

• Ellipse

  DavidK asked about drawing the ellipses around data points. I struggled through this a while back and this is a summary of what I puzzled out with help from people that actually know what they are doing. All the mistakes here are mine, comments and corrections welcome!  This picture is the output from Bivariate, produced at the very end of the script. The goal of the script is to calculate the pa...

  Craige_Hales

  Uncharted |

  Sep 30, 2017 8:42 AM

  8586 views | 1 replies
  

• Regex

  A bunch of JMP character functions appeared in a previous post: length, substr, contains, etc. They are great for simple things, and you could do hard things with them if you wanted to. But Regex might be better. Regex, short for Regular Expression, is a powerful JSL function for manipulating text. result = regex( sourceText, searchPattern, replaceTemplate, options ); (There are two other functio...

  Craige_Hales

  Uncharted |

  Sep 30, 2017 8:28 AM

  32451 views | 3 replies
  

• JSL Character String Functions

  Simple Find and Replace JMP's scripting language, JSL, can store numbers, strings, and other objects in variables. A string assignment might look like this:  place = "Cary, North Carolina, USA"; the variable place now holds the string. Here's a set of functions for working with strings in JSL. Place will keep that same string in all the examples. Regex and Pattern Matching are covered in later po...

  Craige_Hales

  Uncharted |

  Sep 30, 2017 8:25 AM

  77431 views | 3 replies
  

• Doomsday

  Valentine's day coincides with Doomsday this year.  Again.  The Doomsday rule is neat, here's a JSL snippet to illustrate part of the idea.   For( year = 1901, year <= 2099, year++, // 1900 was not a leap year and 2100 won't be   really =   Day Of Week( Date DMY( if(mod(year,4),3,4), 1, year ) ) == // 3rd day of January, 3 years out of 4   Day Of Week( Date DMY( if(mod(year,4),28,29), 2, year ) ) ...

  Craige_Hales

  Uncharted |

  Sep 30, 2017 7:03 AM

  5779 views | 0 replies
  

• Control FTP from JMP with JSL

  Here's some JSL to operate FTP through JMP 11's RunProgram function. More about RunProgram below. // this example is specific to Windows because of FTP and RunProgram issues // you'll need to supply a proper site to open and replace // anonymous... with proper credentials. // for the example, build a "junk" directory in the temp folder temp = Convert File Path( "$TEMP", windows ) || "junk"; // no ...

  Craige_Hales

  Uncharted |

  Sep 30, 2017 6:06 AM

  8006 views | 3 replies
  

• Interpreting GPS coordinates in JPGs

  Coming back from the eclipse You can set your phone to add GPS data to pictures.

  Craige_Hales

  Uncharted |

  Aug 27, 2017 8:05 AM

  2393 views | 0 replies
  

• Does Your GPS Know Where You Are?

  GPS Uncertainty Fixing a data collection mistake. Video too.

  Craige_Hales

  Uncharted |

  Jul 8, 2017 5:35 PM

  2337 views | 0 replies
  

• Fast JSON Parsing using Pattern Matching

  Xan posted very cool code to read JSON data into JMP.  Xan noted the JSL was slow loading large JSON files; here's a look at some replacement JSL to make it faster.  (JSON is better suited for small objects, but if you must load 100K or more, this will help.)   Xan's original code has a parsing routine to read the JSON string a character at a time:   the variable pos walks through the length of t...

  Craige_Hales

  Uncharted |

  Jun 7, 2017 1:44 PM

  12272 views | 1 replies
  

• Tile JSL part 3

  Using the kites and darts from part 2, make a 3D surface. Some of the Scene3D code was borrowed from some of the examples that ship with JMP. This JSL was written to make the video clip. Buried in it are some scaling and animation controlling values, tweaked to make the video just right. There is also a path to a directory on the desktop that will be filled with numbered bitmaps. Part 4 will expl...

  Craige_Hales

  Uncharted |

  May 26, 2017 2:17 PM

  2580 views | 0 replies
  

• Tile JSL part 2

    In part 1 the penrose tiling generator stored its results in a data table. The graph in part 1 contained lines of different gray levels, indicating how many times each line was drawn. The tiles are not emitted from the generator as polygons, just a bunch of loose and repeated edges. Part 2 JSL won't be using the data table; instead an associative array will collect the line segments using their...

  Craige_Hales

  Uncharted |

  May 26, 2017 2:03 PM

  2586 views | 0 replies
  

• Tile JSL part 1

  Here's the first part of the code for the video in the previous post.  This is a straight-forward translation/conversion of the reference.  The generator recursively subdivides the starting space, using a set of rules that make a valid Penrose tiling.  Sorry, can't explain the rules, just the code to apply them. // http://martinpblogformasswritingproject.blogspot.com/2011/06/penrose-tiling-in-pyp...

  Craige_Hales

  Uncharted |

  May 26, 2017 1:48 PM

  4163 views | 0 replies
  

• JSL Set Operations

  Overlapping red, green, blue rings Using Associative Arrays as sets. Intersect, Union, Difference.

  Craige_Hales

  Uncharted |

  May 18, 2017 4:02 PM

  3565 views | 1 replies
  

• Introspection

  A closer look at JSL expressions

  Craige_Hales

  Uncharted |

  Feb 28, 2017 10:20 AM

  10154 views | 5 replies
  

• What is Life?

  Animated gif of Gosper's glider gun, tilted 30 degrees JSL to power a glider gun

  Craige_Hales

  Uncharted |

  Feb 18, 2017 6:14 PM

  2429 views | 0 replies
  

• Dark Corners

  Craige_Hales

  Uncharted |

  Feb 10, 2017 5:41 AM

  2442 views | 0 replies
  

• Kissing Circles

  Apollonian circles video of Apollonian Gasket and code to make your own

  Craige_Hales

  Uncharted |

  Feb 4, 2017 5:31 AM

  2735 views | 1 replies
  

• Back Reference

  The third argument to regex is a powerful replacement generator.

  Craige_Hales

  Uncharted |

  Feb 4, 2017 5:07 AM

  7847 views | 5 replies
  

• Backtracking Secrets

  The aphorism "If at first you don't succeed, try, try again" is formalized in pattern matching in a process called backtracking. Backtracking is how the matcher checks out all the possible combinations that might match. This post uses some secret features in JMP's pattern matcher to expose the backtracking process. The single statement below is a moderately complicated pattern match.  But even si...

  Craige_Hales

  Uncharted |

  Feb 1, 2017 5:04 AM

  2415 views | 0 replies