Course Modules

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Module 1: Macros & Scripting

Play around with control structures
Write a function to process single images:
- Convert to 8-bit
- Apply threshold
- Analyze particles
Implement batch processing
Add error handling and logging:
- Try/catch blocks
- Progress updates
- Error messages

1. Which statement correctly creates a new function in ImageJ macro language?

def myFunction(parameter) { } function myFunction(parameter) { } void myFunction(parameter) { }

2. What is the purpose of setBatchMode(true)?

To prevent macros from running To speed up processing by hiding image windows To enable user input during macro execution

3. How do you get a list of files in a directory using ImageJ macro language?

fileList = getFileList(dir); fileList = dir.listFiles(); fileList = Directory.getFiles(dir);

4. Which function creates a dialog box for user input?

Dialog.create("Title"); createDialog("Title"); new Dialog("Title");

5. What's the correct way to handle errors in a macro?

try { ... } catch(err) { ... } try { ... } except { ... } on error { ... }

6. How do you access the number of open images in ImageJ?

nImages getImageCount() Window.getImageCount()