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Error message (Read 758 times)
Woodlouse
Error message
Nov 4th, 2009, 3:56pm  
I want to play about with text sourced from online, but I keep getting the error 'cant find anything named 'i' ' - I dont think I've had to initialize i in a for loop before..? What have I done wrong here please?

Code:


String textLines [] = loadStrings("webpage text (cannot post as am new to the forum)");

String textLinesJoined = join(textLines, " ");

int start = textLinesJoined.indexOf("Edna Lumb was a student");
int end = textLinesJoined.indexOf(".", start);
String selectedText = textLinesJoined.substring(start, end);

for(i=0; i < selectedText.length; i++) {
 char letter = a;
 if(selectedText.charAt(2) == letter) {
  fill(100, 0, 0); 
 }
}

println(selectedText);
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Cedric
Re: Error message
Reply #1 - Nov 5th, 2009, 1:37am  
first you are missint the INT in int i  = 0;
second problem you have to write 'a' not only a...

still not working though as i cant test it without the website, file you load.
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... twitter.com/CedricKiefer
WWW CedricKiefer 9570393 CedricKiefer  
Woodlouse
Re: Error message
Reply #2 - Nov 5th, 2009, 3:53am  
Many thanks!
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Woodlouse
Re: Error message
Reply #3 - Nov 5th, 2009, 5:27am  
Well I've changed it about so it looks a bit better I think, but the value of 'int a' which i am using to count the repetitions of the character 'a' only updates once for some reason.

(web address contains spaces).

Code:


String textLines [] = loadStrings("ht tp:// ww w. leeds. g ov. uk /");

String textLinesJoined = join(textLines, " ");

int start = textLinesJoined.indexOf("Get the very");
int end = textLinesJoined.indexOf(".", start);
String selectedText = textLinesJoined.substring(start, end);

void draw() {

for(int i=0; i < selectedText.length(); i++) {
char letter = 'a';
int b = 10;
 if(selectedText.charAt(i) == letter) {
   int a = b + 20;
    println(a);

    fill(100, 0, 0); 
  ellipse (a, a, 20, 20);

 }


}

println(selectedText);
}
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PhiLho 
Re: Error message
Reply #4 - Nov 5th, 2009, 6:07am  
You define the a variable within the if () {} block. The variable (and its value) is forgotten as soon as you quit this block (on next loop), so you draw all your circles on the same place.
Beside, you should define your constants outside of the loop.
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WWW  
Woodlouse
Re: Error message
Reply #5 - Nov 5th, 2009, 6:54am  
Yes that has worked thankyou both.
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