ij-macro-programming-workshop

Previous            Exercise            Next

Exercise 14.01 - Open related files

Aim:

• learn how to open related images, by using string operations on the filenames.

The folder images/14 contains a number of images of cells. The images come in pairs belonging together. One channel contains the dapi-staining the other the rhodamine.

Let the user select a dapi-image. The macro should then open the dapi image and the corresponding rhodamine image.

Useful commands:

• open() The open command without parameter opens a file-dialog that lets the user select an image. The selected image will be opened in ImageJ.
• File.directory The directory from which the last file has been opened.
• File.name The name of the last file that has been opened
• replace(string, old ,new) Replaces all occurences of the substring old in string by new and returns the result.
• open(path) Opens the image stored under path in the filesystem.

Your code starts after this line

open();
path = File.directory;
imageDAPI = File.name;
imageRHOD = replace(imageDAPI, "dapi", "rhod");
open(path + imageRHOD);

Your code ends before this line

The code below is for automatically checking the result. Please ignore it!

ok = (nImages == 2);
ok = ok && (isOpen(imageDAPI));
ok = ok && (isOpen(imageRHOD));
if (ok)
	showMessage("That's right. Great, you did it!");
else 
	showMessage("Your result is wrong! Please check your macro and try again!");

Previous            Exercise            Next

This site is open source. Improve this page.