ChangeHeight Method

Summary

Increases or decreases the allocated height of an image.

Syntax

Objective-C

C++/CLI

Java

Python

public void ChangeHeight( 
   int height 
)

- (BOOL)changeHeight:(NSInteger)newHeight error:(NSError **)error

public void changeHeight( 
   int intValue 
);

public: 
void ChangeHeight(  
   int height 
)

def ChangeHeight(self,height):

Parameters

height
New height in pixels.

Remarks

You can use this method in a callback routine to adjust the allocation when loading an image of unknown height.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Dicom; 
using Leadtools.Drawing; 
using Leadtools.Controls; 
using Leadtools.Svg; 
 
 
public void ChangeHeightExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
   // Load the image 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   Console.WriteLine(string.Format("Height: {0}", image.Height)); 
   image.ChangeHeight(image.Height / 2); 
   Console.WriteLine(string.Format("Height: {0}", image.Height)); 
 
   image.Dispose(); 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.util.ArrayList; 
import java.util.List; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.*; 
import leadtools.svg.*; 
import leadtools.imageprocessing.CloneCommand; 
import leadtools.imageprocessing.FillCommand; 
import leadtools.imageprocessing.FlipCommand; 
import leadtools.imageprocessing.GrayscaleCommand; 
import leadtools.imageprocessing.color.InvertCommand; 
import leadtools.imageprocessing.color.PosterizeCommand; 
 
 
public void changeHeightExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
   String destFileName = combine(LEAD_VARS_IMAGES_DIR, "Result.cmp"); 
 
   // Load the image 
   RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "IMAGE1.CMP")); 
   System.out.printf("Height: %s%n", image.getHeight()); 
   image.changeHeight(image.getHeight() / 2); 
   System.out.printf("Height: %s%n", image.getHeight()); 
 
   // Save it 
   codecs.save(image, destFileName, RasterImageFormat.CMP, 0); 
 
   // Clean up 
   image.dispose(); 
   codecs.dispose(); 
 
   assertTrue("file unsuccessfully saved to " + destFileName, (new File(destFileName)).exists()); 
   System.out.printf("File saved successfully to %s%n", destFileName); 
}

Requirements

Target Platforms

Reference

RasterImage Class

RasterImage Members

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Help Version 23.0.2024.2.29

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies