how do i convert my external txt data (string) to numbers? [new to processing]

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exelabel

how do i convert my external txt data (string) to numbers? [new to processing]

in Programming Questions • 6 months ago

hi! i am totally new to processing, and this is the first project i'm doing

so... im trying to get data from a txt file, and the txt file contains all words (voting results)

something like:

"Name: Amey"
"Voted For: Stephen Harper"

"Name: Usman"
"Voted For: Thomas Mulcair"

these results display fine underneath my code (by using println)

but i'm having trouble trying to record how many votes each person has, and convert it to a number percentage and display it on a pie chart.

Anyone help?!

Here is the code I have now:

PFont my_font;
String result;

float diameter;
int[] angles = { 144, 36, 36, 72, 72};
color[] MyOwnColor = {
color(133, 130, 149), color(237, 213, 117), color(240, 174, 232), color(183, 245, 222),
color(75, 219, 167), color(255, 250, 106), color(240, 92, 114),
color(157, 144, 250), color(144, 215, 250)
} ;

float lastAngle = 0.0;

void setup () {
size (1000,700);
background(215);
smooth();
//ellipse(300, 360, 500, 500);
my_font=loadFont("TimesNewRomanPSMT-48.vlw");
textAlign(LEFT);
noLoop ();
diameter = min(width, height) * 0.75;

stroke (0);
fill (255);
rect (650,90,280,350);

}

void draw ()
{
textFont (my_font,26);

fill (0,0,0,200); //last num means transparency
text("Results for Federal Elections", width/6, height/11);
textFont (my_font,15);
fill (0,0,0,150);
text("© 2013 TTT",872,690);

    for (int i = 0; i < angles.length; i++) {
    //fill(angles[i] * 3.0);
    fill (MyOwnColor [i]);
    arc(300, 360, diameter, diameter, lastAngle, lastAngle+radians(angles[i]));
    lastAngle += radians(angles[i]);
    }

    String[] vs_results = loadStrings("FederalResults.txt");
    println("there are " + vs_results.length + " lines");
    for (int i=0; i < vs_results.length; i++) {
    println(vs_results[i]);

}
}

Replies(6)

GoToLoop

Re: how do i convert my external txt data (string) to numbers? [new to processing]

6 months ago

I don't think your program needs draw() for now. Just setup() is enough!

Here's some Processing references to help you out:

http://processing.org/reference/split_.html

http://processing.org/reference/match_.html

http://processing.org/reference/matchAll_.html

exelabel

Re: Re: how do i convert my external txt data (string) to numbers? [new to processing]

6 months ago

Thank you for responding!! the links were helpful, and i removed the draw()

but when I tried to split my string into pieces by using the split funtion, something like this pops up

"The method split(String,char) in the type PApplet is not applicable for the arguments (String[], char)"

"cannot convert from String[] to String."

btw this is what i wrote:

String[] list = split(vs_results, ':');

GoToLoop

Re: how do i convert my external txt data (string) to numbers? [new to processing]

6 months ago

Command split() accepts a regular String and returns a String[]. Each entry is a line of text for example.

Since vs_results is a String[], you need to iterate over each of its String entries to use split()!

Take a look at this reference too:

http://processing.org/reference/loadStrings_.html

exelabel

Re: Re: how do i convert my external txt data (string) to numbers? [new to processing]

5 months ago

   String line1 =vs_results[1];
   String line2 =vs_results[3];
   String line3 =vs_results[5];
   String line4 =vs_results[7];
   String line5 =vs_results[9];
   String line6 =vs_results[11];
   String line7=vs_results[13];
   String line8=vs_results[15];
   String line9 =vs_results[17];
   String line10=vs_results[19];

//seperates the 'voted for', collects only result names
   String[] list = split(line1, ':');
   println(list[1]);
String names [] =
   text(list[1],680,120);
   String[] list1 = split(line2, ':');
   println(list1[1]);
   text(list1[1],680,140);
   String []list2 = split(line3, ':');
   println(list2[1]);
   text(list2[1],680,160);
   String []list3 = split(line4, ':');
   println(list3[1]);
   text(list3[1],680,180);
   String []list4 = split(line5, ':');
   println(list4[1]);
   text(list4[1],680,200);
   String []list5 = split(line6, ':');
   println(list5[1]);
   text(list5[1],680,220);
   String []list6 = split(line7, ':');
   println(list6[1]);
   text(list6[1],680,240);
   String []list7 = split(line8, ':');
   println(list7[1]);
   text(list7[1],680,260);
   String []list8 = split(line9, ':');
   println(list8[1]);
   text(list8[1],680,280);
   String []list9 = split(line10, ':');
   println(list9[1]);
   text(list9[1],680,300);

can i combine these into 2 arrays?

exelabel

Re: how do i convert my external txt data (string) to numbers? [new to processing]

5 months ago

Thanks! I got the split function to work, now I'm trying to make an array that stores all the names, and another array the stores the # of votes for each name

so everytime the system reads a name, it searches the name array to see if the name was registered before, if it was, then you just add one to the #of votes of this person, and if not, then put the name in the names array then you make the votes for that person = 1.

I'm kinda confused to how to write the syntax for this array loop

if the name is not registered before, (when the teacher changes your txt file) how can you record it into your names array and add one each time it appears?

PhiLho

Re: how do i convert my external txt data (string) to numbers? [new to processing]

5 months ago

You already asked about the loop in your other thread, so don't ask in two places, as you will duplicate the work of people helping you (giving similar answers, not seeing the previous ones, etc.).

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