Test image: sawtooth wave

After the square wave [see post], another test image whose plot profile corresponds to a sawtooth wave [Wikipedia].


This test image is calculated from the following formula:


The result (Fig. 1) ...

Fig. 1: Sawtooth image

... and the corresponding plot profile (Fig. 2)

Fig.2: Sawtooth wave

+++ IJ snippet +++

	// Sawtooth wave
	// Jean-Christophe Taveau
	// http://crazybiocomputing.blogspot.com
	f=4;
	w=256;
	h=256;
	Dialog.create("Sawtooth Wave");
	Dialog.addNumber("Frequency",f);
	Dialog.show();
	f=Dialog.getNumber();
	newImage("Sawtooth Signal", "32-bit Black", w, h, 1);
	run("Macro...", "code=[v=x/w*"+f+" - floor(1/2+x/w*"+f+")]");
	exit();

view raw gistfile1.js hosted with ❤ by GitHub

+++ end of IJ snippet +++