Putting floats into array from text file

Programming Questions

programno..

Putting floats into array from text file

in Programming Questions • 2 years ago

Im importing a txt file into processing to draw shapes to the screen. I am drawing ellipses based off the file and want to connect them with a line.

I think the final code for it is line(xPos[i-1], yPos[i-1], xPos, yPos);

But this doesn't work because I dont have arrays set up for the xPos and yPos. I am creating floats by running through the text file with:

//in void setup

lines = loadStrings("test.txt");

data= new Data[lines.length];

for (int i=0; i<lines.length; i++) {

String[] value = split(lines[i],",");

float ellipseSize = float(value[8]);

float xPos = float(value[9]);

float yPos = float(value[10]);

data[i]= new Data (ellipseSize, xPos,yPos); //I have a Data class connected to this. The ellipses are being draw fine just no luck with a line.

}

So what am I missing? I know its only a few lines of code but Im having trouble. Im trying to have the same look as the header graphic on this forum.

Thanks

Replies(2)

PhiLho

Re: Putting floats into array from text file

2 years ago

I fail to see how you draw lines with data[].

programno..

Re: Putting floats into array from text file

2 years ago

Here is the full code. Text file is csv formatted containing strings and floats. I am attempting to visualized gasoline data.

Data [] data;

String []lines;

PFont words;

void setup() {

size(500,500);

smooth();

words = createFont("Futura-MediumItalic-30.vlw",30);

lines = loadStrings("test.txt");

data= new Data[lines.length];

for (int i=0; i<lines.length; i++) {

String[] value = split(lines[i],",");

String company = (value[0]);

String town = (value[1]);

String state = (value[2]);

String date = (value[3]);

String time = (value[4]);

float gallons = float(value[6]);

float price = float(value[8]);

float xPos = float(value[9]);

float yPos = float(value[10]);

println(company);

data[i] = new Data(company,town,state,date,time,gallons,price,xPos,yPos);

}

void draw() {

background(50);

for (int i=0; i<data.length; i++){

data[i].showData(); //display an ellipse

data[i].showInfo(mouseX,mouseY); //rollover to see more info

}

class Data {

String company;

String town;

String state;

String date;

String time;

float gallons;

float price;

float xPos;

float yPos;

Data(String company_, String town_, String state_, String date_, String time_, float gallons_, float price_, float xPos_, float yPos_) {

company=company_;

town=town_;

state=state_;

date=date_;

time=time_;

gallons=gallons_;

price=price_;

xPos=xPos_;

yPos=yPos_;

}

void showData() {

ellipse(xPos,yPos, price,price);

textFont(words,30);

text(date,xPos,yPos);

}

void showInfo(int x, int y) {

//rollover and see more details

if(dist(x,y,xPos,yPos) < price/2) {

fill(255,0,0);

text("$" +price,xPos,yPos+50);

text(company,xPos,yPos+80);

text(time,xPos,yPos+110);

fill(255);

}

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