Add missing examples from the web page.

http://ij-plugins.sourceforge.net/plugins/scala/examples.html

Author: jpsacha

scala-console/examples/batchProcessImages.scala

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+/*
+ *  ImageJ Plugins
+ *  Copyright (C) 2002-2016 Jarek Sacha
+ *  Author's email: jpsacha at gmail dot com
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *   Latest release available at https://github.com/ij-plugins
+ */
+
+import java.io.File
+
+import ij.{IJ, ImagePlus}
+
+//
+// Batch process images applying a median filter.
+//
+batchProcess(
+  filter = {
+    imp =>
+      IJ.run(imp, "Median...", "radius=4")
+      imp
+  },
+  inputDir = new File("my_input_dir"),
+  inputExtension = ".png",
+  outputDir = new File("my_output_dir")
+)
+
+//-------------------------------------------------------------------------------------------------
+
+
+/**
+  * Apply filter to files in input directory, save modified files in the output directory.
+  *
+  * @param filter         operation to be applied to processed images
+  * @param inputDir       input directory
+  * @param inputExtension input file name extension
+  * @param outputDir      output directory
+  */
+def batchProcess(inputDir: File,
+                 inputExtension: String,
+                 outputDir: File,
+                 filter: ImagePlus => ImagePlus) {
+  val title = "Batch Process"
+
+  // Input directory
+  if (!inputDir.exists) {
+    IJ.error(title, "Input directory does not exist: " + inputDir.getAbsolutePath)
+    return
+  }
+
+  // Output directory
+  if (!outputDir.mkdirs()) {
+    IJ.error(title, "Failed to create output directory: " + outputDir.getAbsolutePath)
+    return
+  }
+
+  // List all files with extension ".png"
+  val inputFiles = inputDir.listFiles.filter(_.getName.endsWith(inputExtension))
+
+  // batch process iterating through all input files
+  for (inputFile <- inputFiles) {
+    println("Processing: " + inputFile.getAbsolutePath)
+    val src = IJ.openImage(inputFile.getPath)
+    val dest = filter(src)
+    val outputFile = new File(outputDir, inputFile.getName)
+    IJ.saveAs(dest, "tif", outputFile.getAbsolutePath)
+  }
+}

scala-console/examples/processCurrentImage.scala

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+/*
+ *  ImageJ Plugins
+ *  Copyright (C) 2002-2016 Jarek Sacha
+ *  Author's email: jpsacha at gmail dot com
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *   Latest release available at https://github.com/ij-plugins
+ */
+
+import ij.IJ
+
+process()
+
+/**
+  * Get a reference to currently selected image in ImageJ then apply median filter to it.
+  * If no image is opened show "No image" error message.
+  */
+def process() {
+  // Get currently selected image
+  val imp = IJ.getImage
+  if (imp == null) {
+    // Show error message
+    IJ.noImage()
+    return
+  }
+
+  // Do some processing
+  IJ.run(imp, "Median...", "radius=4")
+  // ...
+}