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Processing Error Array Index Out Of Bounds

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Tool DevelopmentEvents and OpportunitiesGeneral Discussion Sub forum : Move this topic Cancel Programming Questions ggrothaus array index out of bounds in Programming Questions • 2 years ago What does it mean for the array index to be out of bounds? PImage img; // the source image int cellsize = 4; // dimensions of each cell in the grid int cols, processing array index out of bounds exception 1 rows; // number of columns and rows in our system void setup() { size(600,600,P3D); array index out of bounds exception 5 processing img = loadImage("flight patterns.jpg"); //load the image cols =width/cellsize; // calculate # of columns rows = height/cellsize; // calculate # of

Array Index Out Of Bounds Exception Java Try Catch

rows } void draw() { background(0); loadPixels(); // Begin loop for columns for (int i = 0; i < cols; i++) { //begin loop for rows for (int j = 0; j < rows; j++) { int x = i*cellsize + cellsize/2; // x position int y = j*cellsize + cellsize/2; // y position int loc = x + y*width; // pixel array location color c = img.pixels[loc]; // grab the color // Calculate a z position as a function of mouseX and pixel brightness float z = (mouseX/(float)width) *brightness(img.pixels[loc]) - 100.0; // Translate to the location, set fill and stroke, and draw the rect pushMatrix(); translate(x,y,z); fill(c); noStroke(); rectMode(CENTER); rect(0,0,cellsize,cellsize); popMatrix(); } } } 1 Replies(3) jun.jk Re: array index out of bounds 2 years ago It means that loc is ending up as a number greater than the number of pixels in your image. Maybe you mean to be using img.width and img.height? width and height on their own refer to the window size. Leave a comment on jun.jk's reply ggrothaus Re: array index out of bounds 1 years ago Got it, thanks so much! Leave a comment on ggrothaus's reply ginocooper Re: array index out of bounds 1 years ago Well basically, out of bounds means that it is accessing a point or a value that is not well within the right amount of space. You might want to check which numbers are being accessed and see why it is going out of range. You might want to play with the values first and see how it would change the error. I hope you get it together, already. Leave a comment on ginocooper's reply Change topic type Topic Type : Discussions Questions No of days : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Change topic type Cancel Link this topic Provide the permalink of a topic that is related to this topic Permalink Save Close Repl

Tool DevelopmentEvents and OpportunitiesGeneral Discussion Sub forum : Move this topic Cancel Programming Questions jjulien Array Index Out Of Bounds in Programming Questions • 2 years ago Hi, I'm new in Processing and i got a problem i can't find the answer : ArrayIndexOutOfBundsException : 0 The idea of my project is to randomly display points of construction of a font each time you click, anyway i'll put you an image of what i'd like in result and my code : As i said i'm really new so maybe there is error of construction, please tell me ! THANKS ! import geomerative.*; cercle [] touslescercle; RFont font; String textTyped = "TEST"; boolean doSave = false; float a; float b; void setup() { size(1324,350); frame.setResizable(true); smooth(); RG.init(this); font https://forum.processing.org/topic/array-index-out-of-bounds-25-10-2011 = new RFont("FreeSans.ttf", 200, RFont.LEFT); RCommand.setSegmentLength (11); RCommand.setSegmentator(RCommand.UNIFORMLENGTH); touslescercle = new cercle [0]; } void draw() { background(255); translate(20,220); if (textTyped.length() > 0) { RGroup grp; grp = font.toGroup(textTyped); grp = grp.toPolygonGroup(); RPoint[] pnts = grp.getPoints(); // dots fill(0); noStroke(); for (int i = 0; i < pnts.length; i++ ) { touslescercle[i].dessine(); float a https://forum.processing.org/topic/array-index-out-of-bounds = random(pnts[i].x); float b = random(pnts[i].y); } } } class cercle { float diametre,x,y; cercle() { x = a; y = b; diametre = 7; touslescercle = (cercle[]) append (touslescercle, this); } void dessine(){ ellipse(x, y, diametre, diametre); } } void mouseReleased(){ new cercle(); } 1 Replies(2) eerriicc Re: Array Index Out Of Bounds 2 years ago You're initializing the array touslescercle with a size of 0 - which means there's can't be any elements in there. Later, you access the elements in touslescercle depending on the number of RPoints, which is probably bigger than 0. So you're trying to access the first element of an empty array, which results in this Exception. I think you should initialize the array in draw() like this: RPoint[] pnts = grp.getPoints(); touslescercle = new cercle [pnts.length]; Best regards, Eric Leave a comment on eerriicc's reply PhiLho Re: Array Index Out Of Bounds 2 years ago touslescercle = new cercle [0]; A size of zero means the array is empty, any attempt to get something out of it will result in the exception you mention. Moreover, you loop on the length of a (seemingly) unrelated array and access to items on another array. You should loop on touslescercle.length instead, that would avoid to access non-existing entries. Notes: - float a and b in the loop seems unused. -

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the http://stackoverflow.com/questions/14805310/processing-array-index-out-of-bounds workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions https://answers.yahoo.com/question/index?qid=20140117143424AAUGfBE Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. array index Join them; it only takes a minute: Sign up Processing: Array index out of bounds up vote -3 down vote favorite I am new to processing and am creating a sketch where a 600px by 600px canvas is filled with 50px rects of a random color from my orange[] palette. The random formation of blocks need to be located array index out inside of the draw() function in order to operate correctly with some conditionals that I will put in later. The error that I am getting is ArrayIndexOutOfBoundsException: 12 on this line: randomSize[varCreator] = sIncrement[int(random(0,sIncrement.length-1))]; I can't seem to figure out why this error is occurring. I have looked into related questions, and maybe its just because I am so new, but I can't figure it out: int x; //x coordinate int y; //y coordinat int s = 50; //rect size int wide = 600; //canvas width int tall = 600; //canvas height int[] sIncrement = new int[12];//{s, s*2, s*3, s*4, s*5, s*6}; //colors int[] oranges = { #773600, #5f3613, #552700, #9c5215, #9c5c26 }; int[] blues = { #004848, #0c3939, #003333, #107979, #1e7979 }; int[] palette = oranges;//holds current color pallete //random int fillColor = palette[int(random(0, palette.length))]; //random starting fill color int changeColor = palette[int(random(0, palette.length))]; //random new color int[] randomSize = new int[sIncrement.length]; //array of lots of random s values to place newly color changed blocks //setup void setup(){ size(wide, tall); background(255); noStroke(); frameRate(24); /*fi

Answers Home All Categories Arts & Humanities Beauty & Style Business & Finance Cars & Transportation Computers & Internet Consumer Electronics Dining Out Education & Reference Entertainment & Music Environment Family & Relationships Food & Drink Games & Recreation Health Home & Garden Local Businesses News & Events Pets Politics & Government Pregnancy & Parenting Science & Mathematics Social Science Society & Culture Sports Travel Yahoo Products International Argentina Australia Brazil Canada France Germany India Indonesia Italy Malaysia Mexico New Zealand Philippines Quebec Singapore Taiwan Hong Kong Spain Thailand UK & Ireland Vietnam Espanol About About Answers Community Guidelines Leaderboard Knowledge Partners Points & Levels Blog Safety Tips Computers & Internet Programming & Design Next How to fix Array Index Out of Bound error in processing (Java)? I try to run my code, but I get "Array Index Out Of Bound Exception:339300" returned. What is going on? and how can I fix it? this is my code: PImage img; PImage top; img = loadImage("7410472.jpg"); image(img, 0, 0); size(img.width, img.height); top = createImage(width, height,... show more I try to run my code, but I get "Array Index Out Of Bound Exception:339300" returned. What is going on? and how can I fix it? this is my code: PImage img; PImage top; img = loadImage("7410472.jpg"); image(img, 0, 0); size(img.width, img.height); top = createImage(width, height, RGB); //original Image tint(0, 120, 200); float threshold = 200; for (int x = 0; x < img.width; x++) { for (int y = 0; y < img.width; y++ ) { int loc = x + y*img.width; // Test the brightness against the threshold if (brightness(img.pixels[loc]) > threshold) { top.pixels[loc] = color(255); // White } else{ top.pixels[loc] = color(0); // Black } } } // We changed the pixels in destination top.updatePixels(); // Display the destination image(top, 0,0); Follow 3 answers 3 Report Abuse Are you sure you want to delete this answer? Yes No Sorry, something has gone wrong. Trending Now Chicago Cubs Cobie Smulders Kristen Stewart Will Smith Taylor Swift 2016 Crossovers Tennessee Titans Auto Insur

 

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