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Index › Programming Questions & Help › Programs › split float-numbers
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split float-numbers (Read 1192 times)
stderr
split float-numbers
Mar 31st, 2007, 1:40am  
Hi folks,

i try since a couple of hours to cut a float-value inte 2 parts ...

I have the value '-0.123' and need only the part after the point '123'.

But split seems to work only on strings but not at floats ... maybe anyone can help.

Thanks in advance!

Best regards, stderr
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sojamo
Re: split float-numbers
Reply #1 - Mar 31st, 2007, 1:48am  
Code:

float f = -0.123;
String s = ""+f; // convert float to string
String[] sA = split(s,"."); // split the string 
int i = Integer.parseInt(sA[1]); // convert string to int
println(sA[1]+" "+i);

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andreas schlegel / http://www.sojamo.de
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stderr
Re: split float-numbers
Reply #2 - Mar 31st, 2007, 10:21am  
It works. Excactly that was i wanted.

Thanks Andreas!
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fry
Re: split float-numbers
Reply #3 - Apr 1st, 2007, 3:38pm  
using processing methods:

Code:

float f = -0.123;
String s = str(f);
String[] sp = split(s, '.');
int[] pieces = int(sp);


or very compact:

Code:

float f = -0.123;
int[] pieces = int(split(str(f), '.'));


note, however, that in this case, you'll lose the negative because after the split, -0 is 0.
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stderr
Re: split float-numbers
Reply #4 - Apr 1st, 2007, 5:20pm  
Thanks fry,

but now i use another methode to split/convert ...

nf() ... see code below

Code:
void setup() { 
  size(300, 300); 
  background(64); 
  noLoop(); 
} 
 
void draw() { 
 stroke(128); 
 noFill(); 
 arc(150,150,250,250,0,360); 
 arc(150,150,200,200,0,360); 
 arc(150,150,150,150,0,360); 
 arc(150,150,100,100,0,360); 
 arc(150,150,50,50,0,360); 
 stroke(255); 
 line(150,25,150,275); 
 line(25,150,275,150); 
  
 String XPOSF1 = "-0.050"; 
 String YPOSF1 = "+0.050"; 
  
 float xpos = float(XPOSF1); 
 float ypos = float(YPOSF1); 
 
 if ( xpos < 0 && ypos < 0) { // PosX im Minus und PosY im Minus 
   String posx_string = nf(xpos,1,3); 
   String posy_string = nf(ypos,1,3); 
   int posx_string_splitted[] = int(split(posx_string, ',')); 
   int posy_string_splitted[] = int(split(posy_string, ',')); 
   int coordinate_x = 150-posx_string_splitted[1]; 
   int coordinate_y = 150+posy_string_splitted[1]; 
   draw_point(coordinate_x, coordinate_y); 
 } 
 
 if (xpos > 0 && ypos < 0) { // PosX im Plus und PosY im Minus 
   String posx_string = nf(xpos,1,3); 
   String posy_string = nf(ypos,1,3); 
   int posx_string_splitted[] = int(split(posx_string, ',')); 
   int posy_string_splitted[] = int(split(posy_string, ',')); 
   int coordinate_x = 150+posx_string_splitted[1]; 
   int coordinate_y = 150+posy_string_splitted[1]; 
   draw_point(coordinate_x, coordinate_y); 
 } 
 
 if ( xpos > 0 && ypos > 0) { // PosX im Plus und YPos im Plus 
   String posx_string = nf(xpos,1,3); 
   String posy_string = nf(ypos,1,3); 
   int posx_string_splitted[] = int(split(posx_string, ',')); 
   int posy_string_splitted[] = int(split(posy_string, ',')); 
   int coordinate_x = 150+posx_string_splitted[1]; 
   int coordinate_y = 150-posy_string_splitted[1]; 
   draw_point(coordinate_x, coordinate_y); 
 } 
 
 if (xpos < 0 && ypos > 0) { // PosX im Minus und YPos im Plus 
   String posx_string = nf(xpos,1,3); 
   String posy_string = nf(ypos,1,3); 
   int posx_string_splitted[] = int(split(posx_string, ',')); 
   int posy_string_splitted[] = int(split(posy_string, ',')); 
   int coordinate_x = 150-posx_string_splitted[1]; 
   int coordinate_y = 150-posy_string_splitted[1]; 
   draw_point(coordinate_x, coordinate_y); 
 } 
} 
 
void draw_point(int xloc, int yloc) 
{ 
  stroke(255,0,0); 
  fill(255,0,0); 
  arc(xloc, yloc,7,7,0,360); 
}
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