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developer:scriptsamples:importingpointsfromtextfiles [2015/09/14] (current)
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 +====== Importing Points from Text Files ======
 +> **Developer:​** //​[[developer:​rhinoscript|RhinoScript]]//​
 +> **Summary:​** //​Demonstration of how to open a text file and import data from it into Rhino.//
 +
 +=====Introduction=====
 +One common task performed by Rhino users is the importing of point coordinates from some kind of delimited file. This task is easy if you use the //Points File// file type when opening or importing files. But what if the file you are importing does not conform to the traditional delimited file notation. Or, what if the file contains other information?​
 +
 +The key to understanding how to import data from a text is understanding the File System Object included as part of the Microsoft Scripting Runtime. The File System Object simplifies the task of dealing with any type of file imput or output and for dealing with the system file structure itself.
 +
 +To access the File System Object model you must first create an instance of the [[developer:​filesystemobject|FileSystemObject]] object, the only externally creatable object in the model. For more information on the FileSystemObject,​ see Microsoft'​s VBScript documentation or MSDN.
 +
 +=====Sample Code=====
 +The following code sample demonstrates how to import point coordinates from a text file. This can be easily modified to accomodate other information.
 +
 +
 +<code vb>
 + ​Option Explicit
 + '​---------------------------------------------------------------
 + '​ Subroutine: ImportPoints
 + '​ Purpose: ​   Import points from a text file.
 + '​---------------------------------------------------------------
 + Sub ImportPoints
 +   '​ Prompt the user for a file to import
 +   Dim strFilter, strFileName
 +   ​strFilter = "Text File (*.txt)|*.txt|All Files (*.*)|*.*|"​
 +   ​strFileName = Rhino.OpenFileName("​Open Point File", strFilter)
 +   If IsNull(strFileName) Then Exit Sub
 +
 +   '​ The the file system object
 +   Dim objFSO, objFile
 +   Set objFSO = CreateObject("​Scripting.FileSystemObject"​)
 +   '​ Try opening the text file
 +   On Error Resume Next
 +   Set objFile = objFSO.OpenTextFile(strFileName,​ 1)
 +   If Err Then
 +     ​MsgBox Err.Description
 +     Exit Sub
 +   End If
 +
 +   ​Rhino.EnableRedraw False
 +
 +   '​ Read each line from the file
 +   Dim strLine, arrPoint
 +   Do While objFile.AtEndOfStream <> True
 +     ​strLine = objFile.ReadLine
 +     If Not IsNull(strLine) Then
 +       '​ Remove any double-quote characters
 +       ​strLine = Replace(strLine,​ Chr(34), , 1)
 +       '​ Convert the string to a 3D point
 +       ​arrPoint = Rhino.Str2Pt(strLine)
 +       '​ Add the point to Rhino
 +       If IsArray(arrPoint) Then
 +         '​ AddPoint will add a point object to Rhino
 +         ​Rhino.AddPoint arrPoint
 +       End If
 +     End If
 +   Loop
 +
 +   ​Rhino.EnableRedraw True
 +   ​objFile.Close
 +   Set objFile = Nothing
 +   Set objFSO = Nothing
 + End Sub
 +
 +</​code>​
 +
 +\\
 +
 +{{tag>​Developer RhinoScript}}
  
developer/scriptsamples/importingpointsfromtextfiles.txt ยท Last modified: 2015/09/14 (external edit)