I have a CSV file with a very basic setup. It's a 4 column, 3 row setup. Like this:

A, 1, 2, 3
B, 4, 5, 6
C 7, 8, 9

I want to simply expand it to 6 columns, then write it out as a CSV again. I don't care what the values are at this point for the expanded cells, I'm just curious why everything is coming out as null

1. // the following adds functionality to che-wei wang's CSV import sketch
   // lines.length is the number of rows, wheras csvWidth is the column count
   
   String lines[] = loadStrings("db.csv");
   String [][] csv;
   int csvWidth=0;
   
   //calculate max width of csv file
   for (int i=0; i < lines.length; i++) {
     String [] chars=split(lines[i], ',');
     if (chars.length>csvWidth) {
       csvWidth=chars.length + 2;  // here we expand by 2 columns
     }
   }
   
   //create csv array based on # of rows and columns in csv file
   csv = new String [lines.length][csvWidth];
   
   //parse values into 2d array
   for (int i=0; i < lines.length; i++) {
     String [] temp = new String [lines.length];
     temp= split(lines[i], ',');
     for (int j=0; j < temp.length; j++) {
       csv[i][j]=temp[j];
     }
   }
   
   csv[2][4] = "test";
   
   // now save
   // collapse to a single dimension array
   String[] linesOut = new String[csvWidth * lines.length];
   for (int i = 0; i < lines.length; i++) {
     for (int z = 0; z < csvWidth; z++) {
       linesOut[i] = csv[i][z];
       println(linesOut[i]);
     }
   }
   println(linesOut);
   saveStrings("out.csv", linesOut);
   
   //test
   println(lines.length);

When I println(linesOut) I get [0] null [1] null .. and so on, but if I println(linesOut[0]) I get "A"
Goes without saying that the saved file is also null null null null...

Here's the deal. I have a CSV file with 5 columns of data. I want to add a 6th and 7th column of data to each one after running some stuff in Processing to generate those numbers, then save it.

Ideas?

I'm opening up a binary file, converting to 1's and 0's, then outputting as a text file. Problem is, it gives me a line break after each byte, bummer! Any way around this?

1. // Open a file and read its binary data
   byte b[] = loadBytes("whatever.dmg");
   
   String[] lines = new String[b.length];
   for (int i = 0; i < b.length; i++) {
     lines[i] = binary(b[i]);
   }
   
   saveStrings("lines.txt", lines);
   exit(); // Stop the program
   
   

Any way to do this within processing?

I'd love it if I could then superimpose this on a map... hmm

EDIT: Now with more code!

1. // get request for ip info, save to string
   String[] info = loadStrings("http://freegeoip.net/csv");
   
   // let's break up that string into useful stuff eh?
   String[] list = split(info[0], ',');
   
   // Here is the formatting for list:
   // 0: IP address
   // 1: Country abbreviation
   // 2: Country
   // 3: Region abbreviation
   // 4: Region
   // 5: City
   // 6: Zip
   // 7: Latitude
   // 8: Longitude
   // 9: No idea
   //10: Area Code
   
   // To get this on a Google Map or something, I probably just need 7 and 8.
   
   println(list);

Ok so here's a question: What's a way I could go about super imposing this onto a map? What I'd like to be able to do is draw a line from my location to a friend, for example, in Europe. This could either be with a simple image that I could calibrate to be set up for decent coord matching, or maybe I could interact with a Google Map.

Hey all,

I'm teaching a couple Processing courses  and am supposed to give a demonstration at the student-faculty get together. I'm curious if any of you have ideas about sketches that are particularly interesting to look at right off the bat. I'm especially interested in fun interaction and live video processing (they are mostly filmmakers).

Thanks.

When I try to run the sendImage example from the lib on the latest release of Processing 2:

Syphon library for Processing Beta2-r7
lights() is not available with this renderer.
rotateX() can only be used with a renderer that supports 3D, such as P3D or OPENGL.
rotateY() can only be used with a renderer that supports 3D, such as P3D or OPENGL.
box() is not available with this renderer.
Exception in thread "AWT-EventQueue-0" java.lang.IllegalAccessError: tried to access method processing.opengl.PGraphicsOpenGL.getTexture(Lprocessing/core/PImage;)Lprocessing/opengl/Texture; from class codeanticode.syphon.SyphonServer
    at codeanticode.syphon.SyphonServer.sendImage(Unknown Source)
    at SendFrames.draw(SendFrames.java:42)
    at processing.core.PApplet.handleDraw(PApplet.java:2270)
    at processing.opengl.PGL$PGLListener.display(PGL.java:2643)
    at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:576)
    at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:561)
    at javax.media.opengl.awt.GLCanvas$7.run(GLCanvas.java:1054)
    at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1024)
    at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:899)
    at javax.media.opengl.awt.GLCanvas$8.run(GLCanvas.java:1065)
    at javax.media.opengl.Threading.invoke(Threading.java:193)
    at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:483)
    at javax.media.opengl.awt.GLCanvas.paint(GLCanvas.java:537)
    at javax.media.opengl.awt.GLCanvas.update(GLCanvas.java:719)
    at sun.awt.RepaintArea.updateComponent(RepaintArea.java:267)
    at sun.awt.RepaintArea.paint(RepaintArea.java:233)
    at apple.awt.ComponentModel.handleEvent(ComponentModel.java:263)
    at java.awt.Component.dispatchEventImpl(Component.java:4820)
    at java.awt.Component.dispatchEvent(Component.java:4572)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:710)
    at java.awt.EventQueue.access$400(EventQueue.java:82)
    at java.awt.EventQueue$2.run(EventQueue.java:669)
    at java.awt.EventQueue$2.run(EventQueue.java:667)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
    at java.awt.EventQueue$3.run(EventQueue.java:683)
    at java.awt.EventQueue$3.run(EventQueue.java:681)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:680)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Already called beginDraw()
java.lang.RuntimeException: java.lang.IllegalAccessError: tried to access method processing.opengl.PGraphicsOpenGL.getTexture(Lprocessing/core/PImage;)Lprocessing/opengl/Texture; from class codeanticode.syphon.SyphonServer
    at com.jogamp.common.util.awt.AWTEDTExecutor.invoke(AWTEDTExecutor.java:58)
    at jogamp.opengl.awt.AWTThreadingPlugin.invokeOnOpenGLThread(AWTThreadingPlugin.java:100)
    at jogamp.opengl.ThreadingImpl.invokeOnOpenGLThread(ThreadingImpl.java:205)
    at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:172)
    at javax.media.opengl.Threading.invoke(Threading.java:191)
    at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:483)
    at processing.opengl.PGL.requestDraw(PGL.java:1155)
    at processing.opengl.PGraphicsOpenGL.requestDraw(PGraphicsOpenGL.java:1602)
    at processing.core.PApplet.run(PApplet.java:2141)
    at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.IllegalAccessError: tried to access method processing.opengl.PGraphicsOpenGL.getTexture(Lprocessing/core/PImage;)Lprocessing/opengl/Texture; from class codeanticode.syphon.SyphonServer
    at codeanticode.syphon.SyphonServer.sendImage(Unknown Source)
    at SendFrames.draw(SendFrames.java:42)
    at processing.core.PApplet.handleDraw(PApplet.java:2270)
    at processing.opengl.PGL$PGLListener.display(PGL.java:2643)
    at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:576)
    at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:561)
    at javax.media.opengl.awt.GLCanvas$7.run(GLCanvas.java:1054)
    at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1024)
    at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:899)
    at javax.media.opengl.awt.GLCanvas$8.run(GLCanvas.java:1065)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:708)
    at java.awt.EventQueue.access$400(EventQueue.java:82)
    at java.awt.EventQueue$2.run(EventQueue.java:669)
    at java.awt.EventQueue$2.run(EventQueue.java:667)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:678)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)


It works fine if I remove server.sendImage(canvas) from the code. Any thoughts?

Trying to capture a frame via webcam and then set a PImage equal to that frame. Not working!

video is my Capture
backgroundImg is a PImage

I've tried several things
backgroundImg = video;

This gives me a black screen and an error that says "waited 5000ms...."

backgroundImg = video.image();

etc.. all give me errors on run.

Any ideas?


Entire code:

1. import processing.video.*;
   
   
   // Variables for capture device
   Capture video;  // for first frame still
   
   // to store images
   PImage backgroundImg;
   PImage movementImg;                 //  Creates a new PImage to hold the movement image
   
   boolean first_frame = true;
   
   void setup() {
     size(640, 480, P2D);
     frameRate(30);
     colorMode(RGB, 255, 255, 255, 100);
   
   
     video = new Capture(this, width, height);
     video.start();
    
     backgroundImg = new PImage(width, height);
     movementImg = new PImage(width, height);   //  Initialises the PImage that holds the movement image
    
     background(0);
   
    
   }
   
   
   void draw() {
     // get dat first frame if ya need it
     if (video.available() && first_frame == true) {
       video.read();
       backgroundImg = video;
       first_frame = false;
     }
    
   
     image(backgroundImg, 0, 0 );              //  Draws the camera image to the screen
    
   }
   
   

1. void setup() {
     size(200, 200);
    
     // Open a file and read its binary data
     byte b[] = loadBytes("veil.jpg");
   
     println(b.length);
   
     for (int out_count = 0; out_count < 100; out_count++) {
   
       for (int i = 0; i < 1; i++) {
   
         b.splice(int(random(0, b.length)), 1);
        
       }
   
       saveBytes("veil" + out_count + ".jpg", b);
     }
   }

So b.splice won't work because it's an array of Bytes. Is there a way to convert it to-from, or can I simply remove an array entry from b?

Hey,

1. String[] lines;
   int index = 0;
   
   void setup() {
     size(200, 200);
     background(0);
     stroke(255);
     frameRate(12);
     lines = loadStrings("veil.jpg");
     //lines[int(random(0, lines.length))] = " ";
     saveStrings("veil.jpg", lines);
   }

even if I make zero modifications, by virtue of opening and saving as text, it produces a corrupt Jpg. Doing this with a standard text editor works, so it's gotta be possible with relative ease.

Ideas?

Hey all,

I'd like to have two windows, which would run on two monitors. The big monitor (projected) would be a nice clean full screen render surface, the other would be to input text that is to be displayed on my big screen. What's the best way to go about this?

Hey all,

Doing a public projection and I'm curious if it's possible to create a drip effect from and SVG. Would it be easier to just do an arbitrary drip effect under/on top of the SVG than to extract some vector data and do it that way? Are there libraries available for this by chance?

Thanks.

Hey all

1. size(640, 360, P3D);
   background(0);
   lights();
   blendMode(ADD);
   noStroke();
   pushMatrix();
   translate(130, height/2, 0);
   rotateY(1.25);
   rotateX(-0.4);
   fill(255,255,255,100);
   box(100);
   fill(255,0,0,255);
   sphere(50);
   popMatrix();

So I can't see the red sphere inside the box. I figure it's a blending option I'm unaware of, but I can't find anything in the reference. Ideas?

Hey there,
So when I run Capture.list() I get
[0]DV Video
[1]IIDC Firewire Video
[2] USB Video Class Video

None of these change when I un/plug my USB webcam. They seem to be generic placeholders. Also, my webcam shows up and is usable in Photo Booth.

Ideas?

So I basically have a system set up that's reading serial data, temperature and humidity, which looks like "65.25 99.1" coming in. I want to transform that to
"Temperature: 65.25 F <br>
Humidity: 99.1 %'
<br> is a new line in HTML, btw. I've tried a few things.. it doesn't seem to let me access each word in the array separately. What do I do?

http://www.pattenstudio.com/projects/sensetable/
This project is very interesting in that it doesn't use CV to keep track of the "pucks" but radio transmission of some kind. What kind of sensors would one need to start developing something similar? Any opinions on the pros and cons of CV vs this kind of setup?
Thx

Hello,
I'm wondering if there is a sort (or something) function that will compare a given value to all values in a matrix.
What I am trying to do:
I have a matrix of lines that make up the volume of a cube in 3d space. The lines are generated randomly, so I have a class StringLine that has X and Z values, and Y determines what portion of the string will be "lit up." So now I want to add a ball to this environment, in a sort of pong match, so it has float values to determine its location, but the strings are placed randomly, so I just want to find the closest one and light it up.
So if the cube is 1 x 1 x 1, and the ball is at .2 on X and .5 on Z (half way into the cube, .2 from the left) but the closest string is actually at .22 .48 or something, I want that string to get the center of the ball, and so forth. What is the best way of going about this? Does my explanation make sense?
Thanks.

So essentially what I am trying to do is let's say you have an ellipse in the center of the screen, and it's value/radius is 100. I want to visualize data in such a way that you can input a value into this ellipse, let's say you select a value of 20. I want that value to "fill" part of the ellipse, as if it were water accumulating at the bottom of the circle. So I can think of two ways that this might be accomplished.. one is by using arcs and the other using textures. I would like to be able to add multiple values to this ellipse, each represented by a different color.

My problem is simple. I can't seem to get a 3d shape to have transparency. What's the deal with that?

http://sketchpad.cc/kEkw3vUzf1 there is my sketch... tried tint as well as fill, no dice.

Hey,
When I do a box with a semi-transparent fill, I see these diagonal lines on the face of the box.

 fill(255,100);
box(200);

for example.
How do I get rid of these?

So this is a very simple sketch, but when you use the mouse to rotate the circle it doesn't seem to rotate exactly on the Y axis. Run the sketch and you'll see what I mean.

1. import processing.opengl.*;
   
   float a;
          
   void setup() {
     size(800, 600, OPENGL);
     fill(0, 153);
     noStroke();
     hint(ENABLE_OPENGL_4X_SMOOTH);
   }
          
   void draw() {
     background(255);
     translate(width/2, height/2);
     rotateY(radians(a));
     ellipse(0, 0, 400, 400);
   }
   
   void mouseDragged() {
     a = mouseX;
   }
   

Can you view a page in Processing the way a browser does? Better yet, can you control things like source/destination X,Y, width, height, etc?

Hey,
I'm sorry to ask, but I'm a VJ in desperate need of the opengl 2 library for a project and so I'm waiting on the next version :(
Any ETA?
Best,
G

so the numbers stored in pixels[] are colors, I get that, but they are such weird numbers. What's up with that? Anyway to convert this to a more readable format other than bit shifting?

hey all,
so openCV has those really nifty functions built into the API like absDiff or whatever it is, and I'm wondering if there is a Kinect library that does the same?
All the frame subtraction I've come across is for RGB but really all I need is greyscale. I have a few questions:

is it possible to invoke the loadPixels() on just an image, or does it capture the entire window? once I have my pixels[] array, can I convert that back into a PImage?
and in general, what is the fastest/easiest way to do frame sub on a PImage or with Kinect?

thanks so much

Is there anyway to generate a midi sound from within processing? Like if I wanted to make a virtual keyboard, for example, in which you press the keys and the sound comes out.
Thanks!