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Pipeline

Documentation | Other Specifications | Pipeline

Reclassification

Pipeline is a simplified command interpreter allowing execution of a sequence of operations like: 

Base.Say "Start"
Layer.Open Result=$src Name=source Path="c:\Samples\Interpolation\temperatures.shp"
Layer.CreateGrid Result=$dst Name=grid CS=$GIS Extent=$GIS Width=1000 Height=1000
Interpolation.Kriging Source=$src Destination=$dst Field=TEMP
Layer.Close Layer=$src
Grid.GenerateRamp Layer=$dst
GIS.FullExtent
Layer.CreateVector Result=$cntr Name=contours CS=$dst Extent=$dst ShapeType=Arc
Layer.AddField Layer=$cntr Name=NewField Type=Float Width=3
Contour Source=$dst Destination=$cntr Field="NEW FIELD" ContourBase=15 ContourInterval=1
GIS.ZoomToLayer Layer=$cntr
GIS.Update
Base.Say "Done"

See: TGIS_Pipeline class.

Syntax

Comments

  • Line starting with a semicolon ; is treated as a comment 
    ; this is my comment

Operations

  • Each operation is represented by a single line.
  • Format of each operation is 
    OperationName paramter1=value parameterN=value

Variables

  • Operations can use and set variables.
  • Variables are named like $layer1, $src, $extent, etc.
  • Using dollar sign $ prefix for variables is not obligatory, but we recommend following this convention.
  • Pipeline interpreter has built-in variable $GIS which refers to assigned viewer (GIS).

Parameters

  • Each operation's parameter can be expressed as:
    • reference to a variable (useful in passing parameters, such as: CS, Extent, BitWidth, BitHeight, etc.) 
      parameter=$variable
    • reference to a built-in variable (useful in passing parameters, such as: CS, Extent) 
      parameter=$GIS
    • number 
      parameter=3.14
    • string 
      parameter="some text"
  • Name of the first parameter can be omitted: 
    MyOperation param1=$value1 param2=123
MyOperation $value1 param2=123

Execution

  • Operations are executed line-by-line.
  • The execution is correct if all lines are executed without errors.

Operations

Common

Map Viewer

Layer

Pixel / Grid

2024/06/06 08:42

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