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Loading .txt (Read 1689 times)
Allen
Loading .txt
Apr 25th, 2005, 8:33pm  
Is it possible to load a .txt file? I'm looking at the reference and I'm not seeing any clear option here. Am I missing something obvious?

Also, the text file I'm attempting to load is about 1500 K; will Processing be able to handle this?
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Ethan
Re: Loading .txt
Reply #1 - Apr 25th, 2005, 8:39pm  
The function you need is loadStrings()
http://processing.org/reference/loadStrings_.html
(you would've had to change the viewing option on the reference page to 'complete' to see it)

As far as the size of the txt file - I'm not sure. Can't hurt to give it a try Wink
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Allen
Re: Loading .txt
Reply #2 - Apr 25th, 2005, 8:47pm  
Ethan wrote on Apr 25th, 2005, 8:39pm:
(you would've had to change the viewing option on the reference page to 'complete' to see it)


Nice! Thanks for the quick reply!
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REAS
Re: Loading .txt
Reply #3 - Apr 25th, 2005, 11:37pm  
for large files you might need to use openStream():
http://processing.org/reference/openStream_.html

it works well, but is not yet documented.
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john
Re: Loading .txt
Reply #4 - May 23rd, 2005, 6:02am  
While we are on the subject, can you explain to me why/if
loadStrings() and saveStrings() read and write to different
directories? I don't seem to be able to update a file...just make new ones in different directories...I find it confusing to say the least. I guess I need Reading and Writing 101. It also appears to act differently in the applet environment were I presumed, apparentely incorrectly, that any data files would be exported along with others in the jar and be as accessible..
Smiley
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jd
 
TomC
Re: Loading .txt
Reply #5 - May 23rd, 2005, 10:47am  
I'm pretty sure data files are put in the jar as you expect - post back if I'm mistaken.

Actually, the fact that data files are bundled into the jar file is a very good reason not to save things in the same place as you load them from - I have a sketch which saves out 200Mb tiff images, and I don't want one of them ending up the jar file, let alone more!

If you're implementing a cache of some sort, or a way to save state, it's better to load and save somewhere else.
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fry
Re: Loading .txt
Reply #6 - May 23rd, 2005, 11:55pm  
aye, tom's hit it on the head. files are read from the .jar, specifically the 'data' folder, and saved to the sketch folder. of course you can save to a subfolder as well, but you can only do that inside the environment, you can't use saveStrings() or whatever with an applet.
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fjen
Re: Loading .txt
Reply #7 - Nov 29th, 2005, 9:17am  
fry wrote on May 23rd, 2005, 11:55pm:
... . of course you can save to a subfolder as well, but you can only do that inside the environment, you can't use saveStrings() or whatever with an applet.


that's a pity actually .. i use export to generate a double-clickable jar (with a main() method) on os-x. saveStrings() get's a little confused when used from inside this jar .. it saves the files into a folder called "null" inside the applet-folder. i know this is not really a bug since i'm leaving the processing way, but i thought maybe future versions will use export to generate standalone apps ...

F

(oh, processing 0096 on 10.4.3)
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fry
Re: Loading .txt
Reply #8 - Nov 29th, 2005, 3:23pm  
that's something else, and would be a bug. i only meant that applets couldn't use saveStrings() to somehow save up to the server.
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fry
Re: Loading .txt
Reply #9 - Nov 29th, 2005, 3:29pm  
actually no, i just tested it and it works fine.

my guess is that you're not setting up your main() properly, so the applet folder isn't being set. you should be using:

static public void main(String args[]) {
 PApplet.main(new String[] { "yoursketchname });
}

if you don't you're on your own to make sure all the variables necessary for p5 stuff like saveStrings() works.
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fjen
Re: Loading .txt
Reply #10 - Dec 1st, 2005, 8:58am  
yeah i know you were talking about saving to a server, just thought it fits here ... and you're right i was not initializing PApplet correctly. thanks!

F
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