https://wiki.mcneel.com/ Wed, 08 Apr 2026 19:58:41 +0000 FeedCreator 1.8 https://wiki.mcneel.com/ttps://wiki.mcneel.com/lib/tpl/mcneel-public/images/favicon.ico https://wiki.mcneel.com/ https://wiki.mcneel.com/labs/explicithistory/componentsoverview?rev=1597445311&do=diff A Brief Overview of Components Explicit History Plug-in Wiki Pages //Robert McNeel & Associates ---------- " Summary: Explicit History components overview" Introduction The Explicit History plug-in comes with a large (and growing) list of available components and parameters. Also, it's possible for users to make their own components as plug-ins to this plug-in. Knowing your components in Explicit History is as important as knowing your commands in Rhino. This Wiki page is a brief o… anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/dataindex2example?rev=1597445311&do=diff Explicit History Data Index 2 Example Explicit History Plugin Wiki Pages Robert McNeel & Associates ---------- " Summary: Explains how the Cycle option behaves during index access" Download the definition file (made with version 0.2.0012). When accessing individual items in a list, you have to use an index value. The first item in any list is always stored at location zero, the second item at location 1, and so on. Typically, if you start to access a list at index -5, an error occurs … anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/dataindexexample?rev=1597445311&do=diff Explicit History Data Index Example " Summary: Explains how to extract individual values from a list" Explicit History Plug-in Wiki Pages Download the definition file (made with version 0.2.0012). All data in Explicit History is stored in lists. Sometimes you need to extract specific items from a list. This example definition shows how to extract a single point from a list of division points. For Sublist extraction see the anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/datamatchingexample?rev=1597445311&do=diff Explicit History Data Matching Example Explicit History Plug-in Wiki Pages ---------- " Summary: An example of Data Matching in action" Download the definition file (made with version 0.2.0012). ---------- Data Matching is an extremely important aspect of Explicit History. The McNeel wiki pages contain a fair amount of information on the subject, but you can download this example file and see for yourself. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/datastreammatchingalgorithms?rev=1597445311&do=diff Grasshopper Data Stream Matching Grasshopper Wiki Pages Robert McNeel & Associates ---------- " Summary: A description of data stream matching algorithms" Data matching Data matching is a problem without a clean solution. It occurs when a component has access to different sized inputs. Imagine a component which creates line segments between points. It will have two input parameters which both supply point coordinates (Stream A and Stream B). It is irrelevant where these parameters … anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/distancelogicexample?rev=1597445311&do=diff Explicit History Distance Logic Example Explicit History Plugin Wiki Pages //Robert McNeel & Associates// ---------- " Summary: An example of logical relationships between numbers and geometry" Download the definition file (made with version 0.2.0012) . ---------- Uses expressions to create a relationship between the height of a box object and its distance away from a variable point. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/examples?rev=1597445311&do=diff Grasshopper Tutorials Grasshopper Wiki Pages Robert McNeel & Associates ---------- " Summary: Some examples of Grasshopper Definitions." Name Preview Description Data Matching no preview available An example of different data matching algorithms Data Index no preview available Explains how to extract individual values from a list anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/expressionlanguage?rev=1597445311&do=diff Explicit History Expressions Explicit History Plug-in Wiki Pages ---------- " Summary: A description of expression language in Explicit History" Expressions The Explicit History plug-in features its own brand of expression syntax, since the available scripting languages rarely support vector and point operators. The syntax of the Explicit History Expression language is similar to VBScript, but with several additions. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/home?rev=1597445311&do=diff Grasshopper Main Page Grasshopper Wiki Pages Robert McNeel & Associates ---------- " Summary: Main wiki page for the Grasshopper plug-in" Grasshopper now has its own site - www.grasshopper3d.com Go there for downloads, more info, the Grasshopper forum, etc. Main Page Download Page Grasshopper Forum It is highly recommended anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/interfaceexplained?rev=1597445311&do=diff Grasshopper Interface Explained Grasshopper Wiki Pages Robert McNeel & Associates ---------- " Summary: Grasshopper interface explained." The main dialog Once you have loaded the plug-in, the _Grasshopper command will display the main Grasshopper window: This interface contains many different elements, most of which will be familiar to Rhino users: anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/multivariableexpressionexample?rev=1597445311&do=diff Explicit History Complex Expression Example Explicit History Plug-in Wiki Pages ---------- " Summary: Shows the use of the expression components" Download the definition file (made with version 0.2.0012) . ---------- Shows the use of the f(x,y,z) expression component. You can quickly edit the expression by double-clicking the component. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/objectsexplained?rev=1597445311&do=diff Grasshopper Objects Explained Grasshopper Wiki Pages //Robert McNeel & Associates// ---------- " Summary: Grasshopper Objects" Grasshopper Definition Objects A Grasshopper Definition can consist of many different kinds of objects, but in order to get started you only need to familiarize yourself with two of them: anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/persistentdatarecordmanagement?rev=1597445311&do=diff Grasshopper Data Persistent Data Management Grasshopper Wiki Pages Robert McNeel & Associates ---------- " Summary: How to set and alter persistent data records" Types of data Parameters are only used to store information, but most parameters can store two different kinds: anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/shiftexample?rev=1597445311&do=diff Explicit History Shift Example Explicit History Plugin Wiki Pages //Robert McNeel & Associates// ---------- " Summary: A case-study of the Shift component" Download the definition file (made with version 0.2.0012) . ---------- All data in Explicit History is stored in lists. Sometimes you need to perform an action on each item in a list which depends on neighbouring items. For example, if you want to connect each point in a list of points with the next one, you need to somehow … anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/sortandcullexample?rev=1597445311&do=diff Explicit History Sort and Cull Example Explicit History Plug-in Wiki Pages ---------- " Summary: Shows how to remove distant points from an unordered set" Download the definition file (made with version 0.2.0012) . ---------- Shows how to use Culling Patterns to remove unwanted points from a set. When the distance from a point in the set exceeds a certain value, it is culled from the list. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/sortandsubsetexample?rev=1597445311&do=diff Explicit History Sort And Subset Example Explicit History Plugin Wiki Pages //Robert McNeel & Associates// ---------- " Summary: A case study to find the N closest points in a set" Download the definition file (made with version 0.2.0012) . ---------- Implements a non-optimized 'Find-N-Closest-Points' search routine in Explicit History. First all points are sorted based on distance, then the N closest points are extracted. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/sortexample?rev=1597445311&do=diff Explicit History Sort Example Explicit History Plug-in Wiki Pages ---------- " Summary: Shows how to sort a collection of points by distance" Download the definition file (made with version 0.2.0012). All data in Explicit History is stored in lists. Sometimes this data is stored in a predictable (sorted) fashion. Sometimes it is chaotic (unsorted). The Sort component allows you to sort up to four sets of data simultaneously. (This example only sorts two sets at the same time.) anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/splitexample?rev=1597445311&do=diff Explicit History Split Example Explicit History Plug-in Wiki Pages ---------- " Summary: Shows how to split a list into two sublists using a single break" Download the definition file (made with version 0.2.0012) . ---------- All data in Explicit History is stored in lists. There are several ways available to get at individual elements in a list or to extract subsets of data. One of the easiest methods is to use a Split component. This component breaks a list of data into two sublis… anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/staircaseexample?rev=1597445311&do=diff Explicit History Staircase Example Explicit History Plug-in Wiki Pages ---------- " Summary: A case study for a self-normalizing staircase" Download the definition file (made with version 0.2.0012) . This example shows a possible way to build a self-normalizing distribution of objects along a spline curve. The base curve is used to position steps at equal intervals and also the elements for the railing. anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000 https://wiki.mcneel.com/labs/explicithistory/volatiledatainheritance?rev=1597445311&do=diff Grasshopper Volatile Data Inheritance Grasshopper Wiki Pages Robert McNeel & Associates ---------- " Summary: The inheritance of volatile data explained" Data inheritance Data is stored in parameters (either in Volatile or Persistent form) and used in components. When data is not stored in the permanent record set of a parameter, it must be inherited from elsewhere. Every parameter (except output parameters) defines where it gets its data from and most parameters are not very parti… anonymous@undisclosed.example.com (Anonymous) labs:explicithistory Fri, 14 Aug 2020 22:48:31 +0000