FloatTable data;
float dataMin, dataMax;

float plotX1, plotY1;
float plotX2, plotY2;
float labelX, labelY;

int rowCount;
int columnCount;
// 0=Milk, 1=Tea, 2=Coffee
int currentColumn = 0;

int yearMin, yearMax;
int[] years;

int yearInterval = 30;   //ändert die Tagesintervalle in der x-Achse
int volumeInterval = 10;

PFont plotFont; 

String[] date = {"1.1.","2.1.","3.1.","4.1.","5.1.","6.1.","7.1.","8.1.","9.1.","10.1.","11.1.","12.1.","13.1.","14.1.","15.1.","16.1.","17.1.","18.1.","19.1.","20.1.","21.1.","22.1.","23.1.","24.1.","25.1.","26.1.","27.1.","28.1.","29.1.","30.1.","31.1.","1.2.","2.2.","3.2.","4.2.","5.2.","6.2.","7.2.","8.2.","9.2.","10.2.","11.2.","12.2.","13.2.","14.2.","15.2.","16.2.","17.2.","18.2.","19.2.","20.2.","21.2.","22.2.","23.2.","24.2.","25.2.","26.2.","27.2.","28.2.","1.3.","2.3.","3.3.","4.3.","5.3.","6.3.","7.3.","8.3.","9.3.","10.3.","11.3.","12.3.","13.3.","14.3.","15.3.","16.3.","17.3.","18.3.","19.3.","20.3.","21.3.","22.3.","23.3.","24.3.","25.3.","26.3.","27.3.","28.3.","29.3.","30.3.","31.3.","1.4.","2.4.","3.4.","4.4.","5.4.","6.4.","7.4.","8.4.","9.4.","10.4.","11.4.","12.4.","13.4.","14.4.","15.4.","16.4.","17.4.","18.4.","19.4.","20.4.","21.4.","22.4.","23.4.","24.4.","25.4.","26.4.","27.4.","28.4.","29.4.","30.4.","1.5.","2.5.","3.5.","4.5.","5.5.","6.5.","7.5.","8.5.","9.5.","10.5.","11.5.","12.5.","13.5.","14.5.","15.5.","16.5.","17.5.","18.5.","19.5.","20.5.","21.5.","22.5.","23.5.","24.5.","25.5.","26.5.","27.5.","28.5.","29.5.","30.5.","31.5.","1.6.","2.6.","3.6.","4.6.","5.6.","6.6.","7.6.","8.6.","9.6.","10.6.","11.6.","12.6.","13.6.","14.6.","15.6.","16.6.","17.6.","18.6.","19.6.","20.6.","21.6.","22.6.","23.6.","24.6.","25.6.","26.6.","27.6.","28.6.","29.6.","30.6.","1.7.","2.7.","3.7.","4.7.","5.7.","6.7.","7.7.","8.7.","9.7.","10.7.","11.7.","12.7.","13.7.","14.7.","15.7.","16.7.","17.7.","18.7.","19.7.","20.7.","21.7.","22.7.","23.7.","24.7.","25.7.","26.7.","27.7.","28.7.","29.7.","30.7.","31.7.","1.8.","2.8.","3.8.","4.8.","5.8.","6.8.","7.8.","8.8.","9.8.","10.8.","11.8.","12.8.","13.8.","14.8.","15.8.","16.8.","17.8.","18.8.","19.8.","20.8.","21.8.","22.8.","23.8.","24.8.","25.8.","26.8.","27.8.","28.8.","29.8.","30.8.","31.8.","1.9.","2.9.","3.9.","4.9.","5.9.","6.9.","7.9.","8.9.","9.9.","10.9.","11.9.","12.9.","13.9.","14.9.","15.9.","16.9.","17.9.","18.9.","19.9.","20.9.","21.9.","22.9.","23.9.","24.9.","25.9.","26.9.","27.9.","28.9.","29.9.","30.9.","1.10.","2.10.","3.10.","4.10.","5.10.","6.10.","7.10.","8.10.","9.10.","10.10.","11.10.","12.10.","13.10.","14.10.","15.10.","16.10.","17.10.","18.10.","19.10.","20.10.","21.10.","22.10.","23.10.","24.10.","25.10.","26.10.","27.10.","28.10.","29.10.","30.10.","31.10.","1.11.","2.11.","3.11.","4.11.","5.11.","6.11.","7.11.","8.11.","9.11.","10.11.","11.11.","12.11.","13.11.","14.11.","15.11.","16.11.","17.11.","18.11.","19.11.","20.11.","21.11.","22.11.","23.11.","24.11.","25.11.","26.11.","27.11.","28.11.","29.11.","30.11.","1.12.","2.12.","3.12.","4.12.","5.12.","6.12.","7.12.","8.12.","9.12.","10.12.","11.12.","12.12.","13.12.","14.12.","15.12.","16.12.","17.12.","18.12.","19.12.","20.12.","21.12.","22.12.","23.12.","24.12.","25.12.","26.12.","27.12.","28.12.","29.12.","30.12."};

void setup() {
  size(720, 405);
  
  data = new FloatTable("bienenwaage.tsv");
  rowCount = data.getRowCount();
  columnCount = data.getColumnCount();
  
  years = int(data.getRowNames());
  yearMin = years[0];
  yearMax = years[years.length - 1];
  
  dataMin = 0;
  dataMax = ceil(data.getTableMax() / volumeInterval) * volumeInterval;

  // Corners of the plotted time series
  plotX1 = 120; 
  plotX2 = width - 80;
  labelX = 50;
  plotY1 = 60;
  plotY2 = height - 70;
  labelY = height - 25;
  
  plotFont = createFont("SansSerif", 20);
  textFont(plotFont);

  smooth();
  
}


void draw() {
  background(224);
  
  // Show the plot area as a white box  
  fill(255);
  rectMode(CORNERS);
  noStroke();
  rect(plotX1, plotY1, plotX2, plotY2);

  drawTitle();
  drawAxisLabels();
  drawYearLabels();
  drawVolumeLabels();

  // draw the data using a long curve
for (int currentColumn = 0; currentColumn < 3; currentColumn++) {
  noFill();
  stroke(32, 128, 192);
    if (currentColumn > 0) {
      stroke (#FF4500);
      }
    if (currentColumn > 1) {
      stroke (#32CD32);
      }
  // balance the weight of the lines with the closeness of the data points
  strokeWeight(2);
  drawDataCurve(currentColumn); }
}


void drawTitle() {
for (int currentColumn = 0; currentColumn < 3; currentColumn++) {
  textSize(20);
  fill(32, 128, 192);
  textAlign(LEFT);
    if (currentColumn > 0) {
      fill (#FF4500);
      textAlign(CENTER);
      }
    if (currentColumn > 1) {
      fill (#32CD32);
      textAlign(RIGHT);
      }  
  String title = data.getColumnName(currentColumn);
  text(title, plotX1 + 20, plotY1 - 30, 600, 200);
}}


void drawAxisLabels() {
  fill(0);
  textSize(13);
  textLeading(15);
  
  textAlign(CENTER, CENTER);
  text("kg", labelX, (plotY1+plotY2)/2);
  textAlign(CENTER);
  text("Datum", (plotX1+plotX2)/2, labelY);
  
  fill(#32CD32);
  text("°C", labelX, (plotY1+plotY2)*0.8);
}


void drawYearLabels() {
  fill(0);
  textSize(10);
  textAlign(CENTER);
  
  // Use thin, gray lines to draw the grid
  stroke(224);
  strokeWeight(1);
  
  for (int row = 0; row < rowCount; row++) {
    if (years[row] % yearInterval == 0) {
      float x = map(years[row], yearMin, yearMax, plotX1, plotX2);
//      text(years[row], x, plotY2 + textAscent() + 10);
      text(date[row], x, plotY2 + textAscent() + 10);
      line(x, plotY1, x, plotY2);
    }
  }
}


int volumeIntervalMinor = 5;   // Add this above setup()

void drawVolumeLabels() {
  fill(0);
  textSize(10);
  textAlign(RIGHT);
  
  stroke(128);
  strokeWeight(1);

  for (float v = dataMin; v <= dataMax; v += volumeIntervalMinor) {
    if (v % volumeIntervalMinor == 0) {     // If a tick mark
      float y = map(v, dataMin, dataMax, plotY2, plotY1);  
      if (v % volumeInterval == 0) {        // If a major tick mark
        float textOffset = textAscent()/2;  // Center vertically
        if (v == dataMin) {
          textOffset = 0;                   // Align by the bottom
        } else if (v == dataMax) {
          textOffset = textAscent();        // Align by the top
        }
        text(floor(v), plotX1 - 10, y + textOffset);
        line(plotX1 - 4, y, plotX1, y);     // Draw major tick
      } else {
        line(plotX1 - 2, y, plotX1, y);     // Draw minor tick
      }
    }
  }
}


void drawDataCurve(int col) {
  beginShape();
  for (int row = 0; row < rowCount; row++) {
    if (data.isValid(row, col)) {
      float value = data.getFloat(row, col);
      float x = map(years[row], yearMin, yearMax, plotX1, plotX2);
      float y = map(value, dataMin, dataMax, plotY2, plotY1);
      
      curveVertex(x, y);
      // double the curve points for the start and stop
      if ((row == 0) || (row == rowCount-1)) {
        curveVertex(x, y);
      }
    }
  }
  endShape();
}