Processing Forum

Java calendar

[1 Reply]
- 11-May-2012 11:38 AM
- Forum: Programming Questions
Hi
I'm relatively new to processing (and code in general) and trying to learn to use Java libraries. I found an example online but it gives an error, and I can't tell why.

The error is "unhandled exception type ParseException" Here's the code:
1. import java.text.SimpleDateFormat;
  
  import java.util.Calendar;
  
  import java.util.Date;
  
  String dateInput = "10/31/1999";
  
  Calendar cal = Calendar.getInstance();
  
  SimpleDateFormat sdf = new SimpleDateFormat("mm/dd/yyyy");
  
  Date date = sdf.parse(dateInput);
  
  cal.setTime(date);
  
  System.out.println("Day Of Week: " + cal.get(Calendar.DAY_OF_WEEK));
Any ideas would be greatly appreciated, thanks!

Calculating media, using sort

[2 Replies]
- 07-Mar-2012 03:38 PM
- Forum: Programming Questions
Hello,
(I'm still a beginner) I'm trying to think of an efficient way to calculate median values for a lot of data. I need to ignore zero values and only calculate the median of the non-zero values. I don't think I'm using sort correctly, nor does this seem like an efficient approach in general. I have 2 questions:

1. Why does this code return "[F@1fcabd4" in the print statement for each entry in median?

2. Is there a more efficient way to do this overall?

Thanks!
void meanMedian(boolean leftRight) {

if (!leftRight) {

median = new float[totalSeconds + 86400];

for (int i = 0; i < totalDays; i ++) {

int skipped = 0;

float [] edaToday = new float[86400];

for (int p = 0; p < 86400; p++) {

edaToday[p] = totalEda[i*86400 + p];

if (totalEda[i*86400 + p] == 0) {

skipped ++;

}

}

sort(edaToday);

reverse(edaToday);

sort(edaToday, 86400-skipped);

float [] medianArray = new float[86400 - skipped];

medianArray = sort(edaToday, 86400-skipped);

median[i] = medianArray[86400/2];

println("median day " + i + " = " + median);

}

}

}

Issue adding a new function

[3 Replies]
- 08-Feb-2012 06:17 AM
- Forum: Programming Questions
I'm having a pretty strange problem, hoping someone can see whatever it is I'm missing.
I created a new function, and I keep getting the "the function after() does not exist" I tried a lot of usual stuff like changing the name, return type, etc. None of that worked. Then I started messing with other functions and found that for some reason in this particular block, if I add a function it throws things off, even when I'm just copying and pasting an existing function. The issue is in the after() function in the dayOfData class. I've been focusing on that, and messing with date() which is right there, to try to debug. The strangest part is that if I copy date and make it date2() it works when I call it in setup but can't find it when I call it in this other spot. I'm beginning to think I'm going crazy, wonder if you can see something I'm missing?

(It's too long to include everything, so I included the parts that seem relevant, problem code is in red)
Slider dial;

CalendarButtons[] day;

CompareButtons[] compare;

ZoomButton[] zoomButton;

DayOfData[] dataDay;

SideButtons leftButton;

SideButtons rightButton;

//parse files for each day and assign date and day of the week

dataDay = new DayOfData[totalDays];

//sampleDay = new DayOfData("2011-07-09", "Saturday");

for (int i = 0; i < totalDays; i++) {

dataDay[i] = new DayOfData(day[i].date(), weekdayName[i]);

}

//find out what date is selected

for (int i = 0; i < totalDays; i ++) {

if (day[i].daySelected()) {

selectedDate = day[i].date();

   bedAfterMidnight = day[i].after();

println(bedAfterMidnight);

}

}

class DayOfData {

//global variabls

String date, weekday;

int sample = 1;



String date() {

return date;

}

boolean after() {

return bedAfterMidnight;

}

}

Slider objects, only 1 working

[1 Reply]
- 26-Oct-2011 09:22 AM
- Forum: Programming Questions
Hello,
I'm new to using objects and classes, and having some kind of logic problem with sliders. I hav 2 sliders, A and B. B works perfectly, but A doesn't reset when I let go. Can anyone see why and help me, please? Thanks!

Slider sliderA;

Slider sliderB;

int topRowY = 4;

int topRowY2 = 306;

int midRowY = 348;

int midRowY2 = 568;

int bottomRowY = 610;

int bottomRowY2 = 674;

int bracketHeight = 10;



int sliderPositionA;

int sliderPositionB;

void setup(){



rectMode(CORNER);

smooth();

size(1408, bottomRowY2+4);

background(255);



sliderA = new Slider(topRowY2 +bracketHeight + 2, 5, 1);

sliderB = new Slider(midRowY2 +bracketHeight + 2, 64, 5);



sliderPositionA = 4;

sliderPositionB = 4;



sliderA.displaySlider(sliderPositionA);

sliderB.displaySlider(sliderPositionB);





}

void draw(){





//sliderA.displaySlider(sliderPositionA);

//sliderB.displaySlider(sliderPositionB);



if (mouseY > topRowY2 && mouseX < midRowY){

sliderA.mouseOverCheck(sliderPositionA);

}



if (mouseY > midRowY2 && mouseY < bottomRowY){

sliderB.mouseOverCheck(sliderPositionB);

}





}

void mousePressed(){

sliderA.sliderPressed();

sliderB.sliderPressed();

}

void mouseDragged(){



sliderPositionA = sliderA.sliderDraggedPosition(sliderPositionA);

sliderPositionB = sliderB.sliderDraggedPosition(sliderPositionB);

sliderA.displaySlider(sliderPositionA);

sliderB.displaySlider(sliderPositionB);



}

void mouseReleased(){

sliderA.sliderReleasedLogic();

sliderB.sliderReleasedLogic();





}

class Slider {

//these are global variables for the class

int sliderY;

int daysInRow;

int daysInBracket;

int sliderX;

int arrowHeight = 16;

int arrowWidth = 10;

int sliderX2 = sliderX + arrowWidth;

int sliderY2 = sliderY + bracketHeight*2 + arrowHeight;

int sliderPosition;

int bracketWidth;

boolean sliderOver;

boolean sliderLocked;

//this is the constructor

Slider(int tempSliderY, int tempDaysInRow, int tempDaysInBracket) {

sliderY = tempSliderY;

daysInRow = tempDaysInRow;

daysInBracket = tempDaysInBracket;

}

//these are functions that live within slider

//draws the slider at the x position it is given in the parameter. x is middle of arrow/ bracket

void displaySlider(int tempSliderPosition) {

//makes bracket width of the

bracketWidth = (width/ daysInRow) * daysInBracket;

//draw rectangles to clear slider

fill(255);

noStroke();

rectMode(CORNER);

rect(0, sliderY - bracketHeight, 1408, sliderY + arrowHeight + bracketHeight);





//draw triangles

fill(0);

stroke(0);

beginShape();

vertex(tempSliderPosition - arrowWidth/2 + bracketWidth/2, sliderY);

vertex(tempSliderPosition + arrowWidth/2 + bracketWidth/2, sliderY);

vertex(tempSliderPosition - arrowWidth/2 + bracketWidth/2, sliderY + arrowHeight);

vertex(tempSliderPosition + arrowWidth/2 + bracketWidth/2, sliderY + arrowHeight);

endShape();

//draw top bracket

noFill();

beginShape();

vertex(4, sliderY - bracketHeight);

vertex(4, sliderY);

vertex(1404, sliderY);

vertex(1404, sliderY - bracketHeight);

endShape();

//drawMovingBracket

beginShape();

vertex(tempSliderPosition, sliderY + arrowHeight + bracketHeight);

vertex(tempSliderPosition, sliderY + arrowHeight);

vertex(tempSliderPosition + bracketWidth, sliderY + arrowHeight);

vertex(tempSliderPosition + bracketWidth, sliderY + arrowHeight + bracketHeight);

endShape();

}



//this checks if mouse is over bracket and says "yea, hey, I'm totally over bracket"



void mouseOverCheck(int tempSliderPosition){



sliderOver = false;

sliderOver = false;



if (mouseX > (tempSliderPosition - arrowWidth/2 + bracketWidth/2 - 4)

&& mouseX < (tempSliderPosition + arrowWidth/2 + bracketWidth/2 +4)

&& mouseY > (sliderY -4) && mouseY < (sliderY + arrowHeight +4)) {

sliderOver = true;

println(sliderOver);

}





else {

sliderOver = false;

println(sliderOver);



}

/*

if (sliderOver = true){

cursor(HAND);

}



else if (sliderOver = false){

cursor(CROSS);

}

*/



}



void sliderPressed(){



if (sliderOver) {

sliderLocked = true;



}



else {

sliderLocked = false;

}







}



int sliderDraggedPosition(int tempSliderPosition){





if (sliderLocked){



mouseX = constrain(mouseX, 4, width - bracketWidth/2 - 4);

int position = mouseX;

//println(position);

return position;



}



else {

return tempSliderPosition;

}





}



void sliderReleasedLogic(){

sliderLocked = false;



}







}

String array if statement

[1 Reply]
- 24-Aug-2011 08:00 PM
- Forum: Programming Questions
Hi
I'm new to Processing and having an error which seems like a rookie grammar mistake, but I can't tell what the issue is. I am trying to check what the value of a string in an array is and print it if it is a certain value. It throws a null pointer exception. The code is below, with the trouble spot in red. I tried with a few other of the arrays and it didn't work for any, but I know the problem isn't that the valu is incorrect. Would appreciate any suggestions. Thanks!

int annoTotalPoints;

//these are variables for the time to x function

int xValue;

String timeClock;

float average;

int annoLineCount= 1967;

//creating arrays for each column

String [] participant = new String[annoLineCount];

String[] annotationsDates = new String[annoLineCount];

String[] annoType = new String[annoLineCount];

String[] mastered = new String[annoLineCount];

String[] preferred = new String[annoLineCount];

String[] description = new String[annoLineCount];

String[] comments = new String[annoLineCount];

String[] onsetTime = new String[annoLineCount];

String[] offsetTime = new String[annoLineCount];

int[] onsetX = new int[annoLineCount];

int[] offsetX = new int[annoLineCount];

void setup() {

size(1440, 300);

background(200);

stroke(255);

smooth();

//read the annotations file and find out how many lines it has

String[] annotationLines;

annotationLines= loadStrings("annotations6.csv");

annoTotalPoints = annotationLines.length;

//println(annoTotalPoints);



for (int a=1;a<annoTotalPoints;a++){



String annotationRow= annotationLines[a];



String[] row_split = annotationRow.split(",");



//parse dates and store to array

int dateColumn =1;

String annotationsRaw = (row_split[dateColumn]);

annotationsDates[a]= annotationsRaw;

//print("date= "); print(annotationsDates[a]);



//parse articipant numnber and store to an array

int participantColumn= 0;

String participantRaw = (row_split[participantColumn]);

participant[a]= participantRaw;

//print(" participant= "); println(participant[a]);



//parse type of annotation store to array

int typeColumn= 4;

String typeRaw = (row_split[typeColumn]);

annoType[a]= typeRaw;



//parse mastered and store to array

int masteredColumn= 5;

String masteredRaw = (row_split[masteredColumn]);

mastered[a]= masteredRaw;



//parse preferred and store to array

int preferredColumn= 6;

String preferredRaw = (row_split[preferredColumn]);

preferred[a]= preferredRaw;



//parse activity description ad store to array

int descriptionColumn= 7;

String descriptionRaw = (row_split[descriptionColumn]);

description[a]= descriptionRaw;



//parse comments and store to array

int commentsColumn= 8;

String commentsRaw;

if ( row_split.length > commentsColumn + 1 ) {

commentsRaw = (row_split[commentsColumn]);

} else {

commentsRaw = "";

}

comments[a]= commentsRaw;



//get an x value for each onset time

int onsetTimeColumn= 2;

String onsetRaw= (row_split[onsetTimeColumn]);

onsetTime[a]=onsetRaw;

onsetX[a]=timeToX(onsetTime[a]);



//get an x value for each offset time

int offsetTimeColumn= 3;

String offsetRaw= (row_split[offsetTimeColumn]);

offsetTime[a]=offsetRaw;

offsetX[a]=timeToX(offsetTime[a]);



}



}

void draw() {

for (int a=0;a<annoTotalPoints;a++) {

//print("date= "); print(annotationsDates[a]);

//print(" participant= "); println(participant[a]);

//print(" anno. type= "); print(annoType[a]);

//print(" mastered?= "); print(mastered[a]);

//print(" preferred?= "); print(preferred[a]);

//print(" description= "); print(description[a]);

//print(" comments= "); print(comments[a]);

//print(" onset= "); print(onsetTime[a]);

//println(onsetTime[a].split(" ")[1]);

//print("onsetX= "); print(onsetX[a]);

//print("offsetX= "); println(offsetX[a]);



if (participant[a].equals("3")) {

println(participant[a]);

}





}

//println("DONE");



}

//this function converts the date and time string to an x value in the coordinate range of the screen

int timeToX(String timeInput) {



if ( timeInput.length() == 0 ) {

return 0;

}



//println(timeInput);

//parses time from date and time

timeClock= (timeInput.split(" ")[1]);

//println(timeClock);

//parses out hours and makes integer

String hoursString = (timeClock.split(":")[0]);

int hours = Integer.parseInt(hoursString);

//println(hours);

//parses out minutes and makes integer

String minutesString = (timeClock.split(":")[1]);

int minutes = Integer.parseInt(minutesString);

//println(minutes);

//parses out seconds and makes integer

String secondsString = (timeClock.split(":")[2]);

Float seconds = Float.parseFloat(secondsString);

//println(seconds);

float timeSeconds = ((60*60*hours) + (60*minutes) + seconds);

//println(timeSeconds);

//xValue= (int)map(timeSeconds, 28800, 54000, 0, 1440);

int tempXValue = (int)map(timeSeconds, 28800, 54000, 0, 1440);

//println(xValue);

return tempXValue;

}

Time codes

[2 Replies]
- 05-Aug-2011 02:30 PM
- Forum: Programming Questions
Hi,
I'm new to Processing and trying to work on a program to view some data. There are 2 separate data sources (.txt files), one is a series of data points taken every 8th second, with a start time. The other is a series of events marked separately at certain times. I have the data at 8th seconds working fine, but want either to make each data point know what time it is or make each of the data points with time codes know which 8th second they belong to. Can anyone suggest a smart way to merge the data so it can be aligned on the same x axis?

Thanks!

Here's my code with the first set of data.

float[] t,e;

float average;

int total_points;

float total;

PFont font;

void setup(){



String[] lines;

int index = 0;

size(1200, 300);

background(200);

stroke(255);

smooth();



font= loadFont("Gotham-Light-12.vlw");

textFont(font);

//reads the data from the file

lines = loadStrings("q2.txt");

//println(lines.length);

println(lines[5]);

int total_points=lines.length-8;

println(total_points);

//total_points=1000; //allows me to use fewer points to troubleshoot



//moves (0,0) to (0, 300)



t= new float[total_points];

e= new float[total_points];



for (int i=0;i<(total_points);i++){



String[] firstline=lines[8+i].split(",");

float edaRaw = float(firstline[5]);



//print there to see what values are in array

//print(((i+1.0)/8.0));print(',');

//println(edaRaw);



//figure out how many entries in a day, alway use same #, this is 6 hours

int maxFrames;

maxFrames= 172800/8;





float time= map((i+1.0)/8.0, 0, maxFrames, 0, 1200);

float eda= map(edaRaw, 0, 20, 0, -300);









//print(time);

//print(",");

//println(eda);

t[i]=time;

e[i]=eda;

//vertex(time,eda);

}



//trying to calculate average

//float average= -100;

float previous = 0;

float value;

float total;

//adds up all the eda values

for (int i=2;i<t.length;i++){

previous = (previous - e[i]);

}

//println(previous);

average = -1*(previous/(total_points));

println(average);





}

void draw(){



//draw x coordinate grid

background(200);



for (int m=0; m<20; m++){

stroke(255);

line(0, 15*m, 1200, 15*m);

//textSize(12);

//text(20-m, 1200, 15*m);

}





//shifts y axis so 0,0 is bottom left corner of window

translate(0,300);





//shade everything over "average" red

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

if (e[i] < average) {

stroke(243,111,93);

line(t[i], average, t[i], e[i]);

}

}





//shade everything below "average" blue

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

if (e[i] > average) {

stroke(130,175,203);

line(t[i], average, t[i], e[i]);

}

}



//draws line

noFill();

beginShape();

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

stroke(0);

vertex(t[i],e[i]);

}

endShape();



//drawing line at average eda value

line(0, average, 1200, average);





//recognize x value of mouse and print eda associated with it

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

if (mouseX == t[i]){

float edaPrint= map(e[i], 0, -300, 0, 20);

//println(edaPrint);

textSize(12);

//text("eda at time " + t[i] +"=" + edaPrint, mouseX, mouseY-300);

text("eda at time " + t[i] +"=" + edaPrint, 20, -274);

}

}

}

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