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Name:

log() -- compute the natural logarithm

Synopsis:
a=log(x) 
a=log(x,base) 

Description:
The log-function computes the logarithm of its first argument. The optional second argument gives the base for the logarithm; if this second argument is omitted, the euler-constant 2.71828... will be taken as the base.

Example:
window open 200,200 to 400,400, "Example", "Example"
draw set 0, "highsolidfill"
for x=10 to 190 step 10
	for y=10 to 190 step 10 
		r=3*log(1+x,1+y) 
		if (r>10) r=10 
		if (r<1) r=1 
		draw circle x,y,r, "Example" 
	next y
next x 
sleep 5
window close "Example"
Explanation:

  This draws another nice plot.



Related: exp