[cons013]

Hello,

I am trying to save an image sequence to then convert into an animation. I have something like this:

(let((i 0)) i
(do ((x 1 (- x 0.2))) ((< x -2))
(ti-menu-load-string (format #f "/display/objects/edit totalpressure-contour surfaces-list z=~a ()" x))
(ti-menu-load-string (format #f "/display/objects/display totalpressure-contour"))
(ti-menu-load-string (format #f "/display/save-picture ./pictures/totalpressure-contour-~a" i))
(set! i (+ i 1))
)
)

Here, it saves the images like this: totalpressure-contour 1 ,.., totalpressure-contour 12

However this mucks up the order when it gets to 10 for the image sequencing software I use. How can I add zeroes to get a format like 0001 0002 ,.., 0023 etc.?

Thanks!

[LuckyTran]

Some examples to motivate your fmt

(format #t "~5,'*d" 12)   -| ***12
(format #t "~5,'0d" 12)   -| 00012
(format #t "~3d"    1234) -| 1234

[cons013]

Originally Posted by LuckyTran

Some examples to motivate your fmt

(format #t "~5,'*d" 12)   -| ***12
(format #t "~5,'0d" 12)   -| 00012
(format #t "~3d"    1234) -| 1234

Hi, thanks for the reply. I tried this but keep getting errors, I'm not sure how to actually implement this into a code. I get the message:

> (format #t "~5,'0d" 12)

Error: format: unassigned variable format (~,)
Error Object: #\,

I tried some similar commands yesterday that I found on various forums but couldn't get the hang of it. Any ideas?

[cons013]

I got it to work:

(format #f "the string is ~04d" 1)

returns: the string is 0001

If anyone could explain the #f (I've seen it's boolean?) and what it means in scheme I'd be very grateful!