handle a big and dynamic array / event when closing the program ?

LorenzoFR

hello,

i'm new in processing, just discover this interesting world and starting to do stuff with it ...
i know web language (as/php/js/...) and a little (very little) C/C++/C# and delphi.

this is the project i have done so far :

• i read the serial data received from an arduino (temperature) (conversion string to float)
• every second i create an average temperature with the last data and add a plot on a graph
• when the graph is full, i save all the data to a file and start a new graph

this is a visual :

problems :

• handling a big "dynamic" float array (so far i use a Table) (1 hour = 3600 float / 24 hours = 86400 float)
• saving all the data to a file when the program is closing

questions :

• i don't know how many data i have to store and the array or arrayList can't handle dynamic array ... what's the best data type for this project ?
• can't find an event to trigger when the program is closing, please tell me there is one !??

thank's

GoToLoop

... or ArrayList can't handle dynamic array...

I'm flabbergasted why would you think a List wouldn't be dynamic: @-)
https://Processing.org/reference/ArrayList.html

For float values, I'd recommend FloatList though: https://Processing.org/reference/FloatList.html

Can't find an event to trigger when the program is closing,

You may try to @Override exit(): https://Processing.org/reference/exit_.html

@ Override void exit() {
  // Do your finalizing stuff below...

  super.exit(); // Call original exit() at the end.
}

LorenzoFR

i put arrayList aside because it use object instead of primite type (very heavy for memory) and the array can have more than 86400 float.

great !!
thank's a lot :-D