Exporting data

baris90

hi there; So I have a PVector that holds lots of position datas.I want to export these datas in to a txt file.I ve already tried the saveStrings() but i got error everytime.So what can i do? Thank you

akiersky

what error? how are you trying saveStrings()? what kind of data are you trying to export. give us some code! :)

seriously though, saveStrings() should be the right way, but without some of your code everything is just a shot in the dark to try and troubleshoot.

ak

GoToLoop

Got an old example here from the old forum:

// forum.processing.org/one/topic/saving-mouseevent-data-in-an-array
// forum.processing.org/two/discussion/160/exporting-data

import java.util.List;

final static List<PVector> coords = new ArrayList();

final static color BG = -1, FG = 0300, BORDER = 0;
final static short DIM = 20, BOLD = 2, FPS = 100;

void setup() {
  size(640, 480);
  smooth();
  noLoop();
  frameRate(FPS);

  fill(FG);
  stroke(BORDER);
  strokeWeight(BOLD);
  background(BG);
}

void draw() {
  print(coords.size() + " - ");
}

void mouseDragged() {
  redraw();
  coords.add( new PVector(mouseX, mouseY) );
  ellipse(mouseX, mouseY, DIM, DIM);
}

void keyTyped() {
  if (key != ' ' & key != RETURN & key != ENTER)  return;

  final String archive = dataPath("MouseCoords.txt");

  final int num = coords.size();
  final String[] coordsTxt = new String[num];

  for (int i = 0; i != num; ++i) {
    //final PVector coord = coords.get(i);
    //coordsTxt[i] = coord.x + "," + coord.y;

    final int[] coord = int( coords.get(i).array() );
    coordsTxt[i] = coord[0] + "," + coord[1];
  }

  saveStrings(archive, coordsTxt);
  println("\n\nMOUSE COORDS SAVED!\n");
}

baris90

So code thath I am using is;

        void draw() {
        kinect.update();
        PImage depth = kinect.depthImage();
        image(depth, 0, 0);
        // make a vector of ints to store the list of users
        IntVector userList = new IntVector();
        // write the list of detected users
        // into our vector
        kinect.getUsers(userList);
        // if we found any users
        if (userList.size() > 0) {
        // get the first user
        int userId = userList.get(0);
        // if we’re successfully calibrated
        if ( kinect.isTrackingSkeleton(userId)) {
        // make a vector to store the left hand
        PVector rightHand = new PVector();
        PVector leftHand=new PVector();

        // put the position of the left hand into that vector
        float confidence = kinect.getJointPositionSkeleton(userId,
        SimpleOpenNI.SKEL_RIGHT_HAND,
        rightHand);
        float confidence1=kinect.getJointPositionSkeleton(userId,
        SimpleOpenNI.SKEL_LEFT_HAND,leftHand);
        println(confidence1);
        println("Right Hand");
        saveStrings("hey.txt",rightHand); !!!!!!!!!!!!!
        exit();                                        !!!!!!!!!!!!!
        // convert the detected hand position
        // to "projective" coordinates
        // that will match the depth image
        PVector convertedRightHand = new PVector();
        PVector convertedLeftHand=new PVector();
        kinect.convertRealWorldToProjective(rightHand, convertedRightHand);
        kinect.convertRealWorldToProjective(leftHand,convertedLeftHand);
        //println("Converted");
        println(convertedRightHand);
        // and display it
        fill(255,0,0);
        if(confidence>0.5){
        float ellipseSize1=map(convertedLeftHand.z,700,5000,50,1);
        ellipse(convertedLeftHand.x,convertedLeftHand.y,
        ellipseSize1,ellipseSize1);}
        //ellipse(convertedRightHand.x, convertedRightHand.y, 10, 10);
        if (confidence>0.5){
        float ellipseSize = map(convertedRightHand.z, 700, 5000, 50, 1);
        ellipse(convertedRightHand.x, convertedRightHand.y,
        ellipseSize, ellipseSize);}
        }
        }
        }

righthand 's content is :[-124.671906, -1083.6913, 2173.4915] etc. And the error is:__the method saveString(String,String[]) in the type PApplet is not applicable for the arguments (String,PVector)_ _ Thank for your responses!!

GoToLoop

Have you really looked at my example above? Especially within keyTyped()'s for loop block?
Where a List<PVector> is converted into int[]. And finally into String[]? :-w

And if you really need float, use the comment out part instead.

baris90

Yes you are right!!Sorry.I worked it out it is fine now.But I have another question?I would be very pleased if you answer!!

PVector rightHand = new PVector();
float confidence1= kinect.getJointPositionSkeleton(userId,
SimpleOpenNI.SKEL_RIGHT_HAND,
rightHand);
if(confidence1 < 0.5){
rightHand=(PVector) append(rightHand,new PVector(0,0,0));
return; 
}

For only this row I want to change the PVector to [0,0,0] when confidence1<0.5 So how can I do that?Thank you !!

GoToLoop

I'm puzzled by your code above! 8-| You're using append() on a non-Array variable -> rightHand. X_X
Moreover, I don't think Array is the right structure for dynamic-sized lists! /:)
That's only appropriate when we know in advance how many units we're gonna use!

Take notice I've chosen List in my own example. More specifically, an ArrayList<PVector> structure. ;;)
Since saveStrings() demands a String[], only at that point we'd need to temporarily convert our main structure to that 1!

For only this row I want to change the PVector to [0,0,0] when confidence1 < 0.5.

When a PVector is instantiated, its default values are [0, 0, 0] already! (~~)
And to change the values of an existing PVector object, use its set() method!