org.tinfour.demo.examples

Class ExampleCrossValidation

java.lang.Object

org.tinfour.demo.examples.ExampleCrossValidation

All Implemented Interfaces:

IDevelopmentTest

public class ExampleCrossValidation
extends Object
implements IDevelopmentTest

Provides an example of code to build a GRID from an LAS file

Constructor Summary

Constructors

Constructor and Description
ExampleCrossValidation()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args) Provides the main method for an example application that attempts to find out how well each point in a set of sample inputs can be predicted by its neighbors.
void	runTest(PrintStream ps, String[] args) Run the example code accepting a set of input vertices and looping through to perform cross validation, tabulating the results.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExampleCrossValidation

public ExampleCrossValidation()

Method Detail

main

public static void main(String[] args)

Provides the main method for an example application that attempts to find out how well each point in a set of sample inputs can be predicted by its neighbors. A cross validation approach is used.

Data is accepted from an LAS file. A TIN is constructed. Then one-at-a-time, each point in the tin is removed, and a predicted value at its position is computed using various interpolators. A error value is computed as the difference between the predicted value and the true value. Errors are tabulated. The removed point is restored. And the process continues to the next point.

Command line arguments include the following:

   -in <file path>    input LAS file
   -frame xmin xmax ymin ymax frame for processing.

    Other arguments used by Tinfour test programs are supported
 

Parameters:

args - command line arguments indicating the input LAS file for processing and various output options.

runTest

public void runTest(PrintStream ps,
                    String[] args)
             throws IOException

Run the example code accepting a set of input vertices and looping through to perform cross validation, tabulating the results.

Specified by:

runTest in interface IDevelopmentTest

Parameters:

ps - a valid print-stream for recording results of processing.

args - a set of arguments for configuring the processing.

Throws:

IOException - if unable to read input or write output files.