Saving multiple PDF files without overwriting it.

Layzfat

Hi I have this code where I would like to safe the pdf files but don't overwrite them when I restart the program.

This is what I have.

String pdfname = "LineSight.pdf"; 

void setup(){          
teller += 1;
    pdfname = "LineSight" + teller + ".pdf";
    pdf = (PGraphicsPDF) createGraphics(width, height, PDF, pdfname);
}


void draw(){
Beginrecord()
Endrecord()
}

So mainly what's happening in the setup is what causes it to make different files, but when I restart the program and save again it rewrites the former files.

PhiLho

I doubt your code works this way (Beginrecord() instead of beginRecord()), but I suppose it is a mockup just showing the base idea, which is a good idea. :-)

Well, there is no easy way to keep the information from one run to the next.

I see two possible ways:

1. Use File.list() to know which files are already there, and to continue after that (needs to parse the file names). Not obvious.
2. Easier: Use saveStrings() with an array of one element, to save the value of teller on disk, on a separate file. Then you can use loadStrings() to get it back at the start of your program, and you can increment it.

koogs

maybe put the date and time in the filename so ensure the filenames are unique.

use yyyymmdd_hhmmss format to preserve the creation order.