Exporting .png files with the same number of digits

[member 428835]

Hi PF!

I'm trying to export plots of .png files as follows:

plot[t_] := 
 Plot[0.1 Exp[-2 \[Pi] t] Cos[\[Pi]*j*x], {x, -1, 1}, 
  PlotRange -> {{-1, 1}, {-1, 1}}, Axes -> False, Background -> Black,
   PlotStyle -> Thickness[0.02]]
dt = 0.1;
Do[Export["test" <> ToString[t/dt] <> "png", plot[t], 
  ImageResolution -> 300], {t, 0, 1, dt}]

But the issue is my output images are titled test1.png, test2.png,...,test13.png...etc. How do I change the file title to read test01.png, test02.png,...,test13.png?

I really appreciate it!

 

[DrClaude]

But the issue is my output images are titled test1.png, test2.png,...,test13.png...etc. How do I change the file title to read test01.png, test02.png,...,test13.png?

I had a quick look at the Mathematica documentation and at StackExchange, and there doesn't appear to be any simple way to apply a format to the numbers. I would suggest using an If testing whether to insert a leading 0.

 

[member 428835]

I had a quick look at the Mathematica documentation and at StackExchange, and there doesn't appear to be any simple way to apply a format to the numbers. I would suggest using an If testing whether to insert a leading 0.

Okay, I wasn't sure if I missed something. Thanks!