Java Setrgb Array

@TeresaCarrigan I don't know how i would put the complicated mouse support code into another method because it requires the use of the MouseEvent e, also I like the fact that I can draw on the screen while it is running so pausing, drawing, then running again isn't really what i want (which you can. Histogram Equalization: Histogram equalization is used to enhance the contrast of an image. Creates a scaled version of this image. I provide a Java program that illustrates four ways of drawing from a Java application, of which three provide pixel access. *; import java. net/ruixue0117/article/details/22829557. Converting a buffered image into an int[] array, then converting it back (Read 16461 times): 0 Members and 1 Guest are viewing this topic. I am trying it, but i ran into a problem. store BufferedImage to file: 28. File;importjav. GrayColor theGrayColor = (GrayColor) obj; Construct a GrayColor using a reference to such an object returned from ArcGIS Engine or Server. timedLoop() is built on top of the core JavaScript function setInterval() Found a bug in the documentation? Let us know at [email protected] Image processing is a vast area in its own right. In this set, we will learn about pixels of image. Write a program in java to take your green-screen picture and embed the subject (you (or me)) into a background picture. Class FITSImage java. You can vote up the examples you like. Java Forums on Bytes. *; import ij. Pixels are the smallest unit of an image which consists of four components Alpha (transparency measure), Red, Green, Blue and in short (ARGB. The problem arises if you try to tweak the image's pixels behind Java's back by getting hold of a handle to the array of pixels. classjourneymap/client/JourneymapClient. A BufferedImage is made of ColorModel of image data. read with Runtime. Love to debug java and find the solution for critical tasks. I've been spinning my wheels for hours here, any help would be appreciated, thanks. io package provides api to reading and writing data. Let us know what you want adding to AndroidScript. Comme promis, Java sort sa version majeure tous les 6 mois. The Java Programming Forums are a community of Java programmers from all around the World. Image;importjava. invokepackage contains dynamic language support provided directly by the Java core class libraries and virtual machine. Search the history of over 376 billion web pages on the Internet. I wrote an. Parameters: rGB - The rGB (A COM typedef) (in) Throws: java. hmm ok, also aus nem bild nen array machen, wo die pixel drin sind also int[h*w] mit pixelgrabber --->funzt aber wie komm ich vom array dazu wieder nen bild zu bekommen -->und zwar mit entsprechend hoch gesetzten werten für sagen wir mal rot?. Java BufferedImage class is a subclass of Image class. int rgb=new Color(0,0,0). The loop will not wait for the timer to complete. It is quite popular and has a design philosophy that emphasizes code readability. In Java please: public class Imaging{/*Inverts each value in a 2D array of integers between 0 and 255. as i read you switch from jna to java-cpp also because of speed. Hi, I'm iterating over pixels in a BufferedImage, but the usual: public void setRGB(int x, int y, int rgb); is too slow for my purposes. Returns the image contents as a binary buffer. You can vote up the examples you like. \$\begingroup\$ To increase the hits on your question you may wish to consider entitling it, "American Gothic in the palette of Mona Lisa: Rearrange the pixels" \$\endgroup\$ – DavidC Jul 9 '14 at 12:39. Sets an array of integer pixels in the default RGB color model (TYPE_INT_ARGB) and default sRGB color space, into a portion of the image data. 8) are averaged. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc. process; import java. sourceforge. I would like to be able to convert a picture into a byte[] array, and then to be able to do the reverse operation, so I can change the RGB of each pixel, then make a new picture. Queue that additionally supports operations that wait for the queue to become non-empty JOptionPane ( javax. PrintWriter class −. are independent from OpenCV. convolveH (java. OK, I Understand. it's slowly coming together. Note: Due to a Java bug, this example (and any other example using Swing on AWT) will not work on Linux platforms. Creating and Drawing to an Image We already know how to load an existing image, which was created and stored in your system or in any network location. GcExcel Java is a high-performance spreadsheet component that comes packaged with all the necessary features to help users handle complex spreadsheet challenges in an efficient way. Use o getRaster(). Below is the follwing code: BufferedImage bufferedImage = new BufferedI. Reading Time: 1 minute Python is a programming language. public interface IColor extends Serializable. Do you mean by the use of System. util; import java. Now, it contains a sequence of pixels, one after the other. Change (1>0) to (1>1) to use the 2nd alternative. I heard someone was streaming Kinect data and it made me wonder if you could just stream image data over websockets if you encoded every frame to Base64. これもJavaの基本ですが、if文は左から順に条件を判定するためです。 上記コードでは、やはりuserList. size()を実行しようとして、 NullPointerExceptionが発生します。 以下のようにすることで、NullPointerExceptionを発生させず 期待の動作をさせることができます。. An Implementation of Steganography. Screen Resolution and Image Size, how to be correct [closed] html,ios,image,resolution,pixels. unrecovered: that's plain rude man cheeser. For each pixel it contains the red, green, and blue components. jar files are too big for your liking, you may extract those. I have checked the source code of the Java 7 BMPImageReader, and it does translate from bottom-up to top-down order while reading, as I expected it to do. have a perfomance advantage instead of using setRGB and getRGB But I have the Problem that the BufferedImage and my DataBuffer isnt always synchron. //Problem Set 3 : Problem 2 import java. Parameters: image - The array of integers with values between 0 and 255 inclusive. In this project we will learn to convert a color image into grayscale image using Java programming language. After we fill the array with random data, a call to repaint() shows the new image on the screen. ImageIO and java. Examples This button control sets a color according to red, green, and blue values from scoped variables bound to input. Java : MultiKeyMap Example A Map implementation that uses multiple keys to map the value. The loop will not wait for the timer to complete. Bu makalede, Java’da basit görüntü işlemeyi ve sayısal görüntü işleme yönteminde çok kullanılan bir yöntem olan histogram eşitlemeyi anlatacağım. The length of each side of a triangle is 100 pixels. 20 [Java GUI] 1. This is the documentation of the Java. Java Hey i am currently trying to read the byte contents of an image into a byte array in java but cant seem to open the image from file. //Problem Set 3 : Problem 2 import java. So, there is no need to construct the 2-D arrays representing the red, green, and blue channels. The problem arises if you try to tweak the image's pixels behind Java's back by getting hold of a handle to the array of pixels. *; /* ===== Coordinate system of a Canvas: 0 1 col# +----+-----+-----+ | | ^ 1 | | | | | | | | | height row# | (col#,row. * @param title the title for the dialog. The following example will read an image file named "darksouls. * Method to convert BufferedImage to byte array * param image Image data * param imageFileName Name of the image file * param plugin Reference to the plugin * return Image data as byte array * throws EnhancedLSBMethodException */ public static byte[] imageToByteArray(BufferedImage image, String imageFileName, ImageBitPluginTemplate plugin). REST-based Java/Groovy DAOs using CouchDB as the backend. Java Magazine JulyAugust 2012 - Free download as PDF File (. It was working, now stopped. * If the images aren't the same size, XOR won't work, so this function is used to ensure the images are the same size. setRGB methods to directly set the value of a pixel or a pixel array to a specific RGB value. Website Home; HOME; We would like to know how to create BMP format image. A new Image object is returned which will render the image at the specified width and height by default. We assume that each int represents a single pixel and its value is the colour of that pixel. Class FITSImage java. DrawCurve(Pen, PointF[]) DrawCurve(Pen, PointF[]) DrawCurve(Pen, PointF[]) DrawCurve(Pen, PointF[]) Dessine une spline cardinale via un tableau de structures PointF spécifié. sqrt(2) * Math. Since this has nothing to do with any specific OS I will answer in a general sense. PrintWriter class −. Called by the constructor so you don't need to call it * yourself, however you can use it to reset the transform if you want to plug in another * image (although that image must have the same width and height) */ public void initialise() { // Calculate the maximum height the hough array needs to have houghHeight = (int) (Math. Legacy OpenGL had a number of included matrix methods and helper functions but OpenGL is a graphics library with a main responsibility to draw things and not to provide a set of mathematical functions, now it is up to us to do these matrix manipulations ourself. We also have to adjust for the fact that each image row starts on a byte boundary. There is also some tutorial from Oracle: BuffreredImageOp tutorial. net/ruixue0117/article/details/22829557. Shrisowdhaman Coimbatore, TamilNadu, India Working as a Project leader, leading java project. Concerning the general strategy to use a 1D array for pixels, there is one reason to do this in Java (and from quickly skimming over the linked video, this reason seems to apply here) : A 1D array can conveniently be transferred into a BufferedImage. Java Native Solution. image public class: BufferedImage The byte data is interleaved in a single byte array in the order A, B, G, R from lower to higher byte addresses within. read(url); ByteArrayOutputStream baos = new ByteArrayOutputStream() Convert image to byte[] and viceversa (Java in General forum at Coderanch). Java DIP - Introduction. A BufferedImage is a two-dimensional array of colours and is the original way Java represented images. You can iterate over all elements of a Java array, or access each element individually via its array index. The image itself is the 2-d signal represented by a set of uniformly spaces sampled values. Finding The Max And Min With An Array And Getting The Index Of Each. Returns a float array containing the color and alpha components of the Color, in the ColorSpace specified by the cspace parameter. Note: This example uses functionality only available in Java 1. I'm pretty sure the image is stored internally as a single-dimensional data structure. Creating a window in Java The Java library contains the necessary methods to create windows. The code below edits the image in place. Your votes will be used in our system to get more good examples. the setRGB and getRGB methods can be incredibly slow on some systems (as much as two orders of magnitude slower than modifiyng the int[] array). BufferedImage; import java. *; import java. A recent Mandelbrot question (Hi @EBrown) in C# inspired me to build my own using the Java 8 parallel streams to implement the parallelism that's useful for computing each pixel value. * array using an optimized binary insertion sort with half exchanges. I was wondering if there is a was a way to read rgb values from an image into a one dimensional array in C#. Welcome to the online RGB color code picker! This is the best place to easily pick or convert a color for a web design project. * If any rows or colors in the array are null, those pixels will be ignored. Each two characters of the output will be one part of the ARGB set. GrayColor theGrayColor = (GrayColor) obj; Construct a GrayColor using a reference to such an object returned from ArcGIS Engine or Server. BufferedImage: setRGB(int startX, int startY, int w, int h, int[] rgbArray, int offset, int scansize) : BufferedImage « java. getDataBuffer() da imagem para ter um acesso ao array de pixels diretamente. import java. Hi all, As said in subject, my problem is that, trying to reconstitute a BufferedImage from byte array representing an image bmp, then showing the resulting picture I obtain a deformed image. Kernel kernel, int[] inPixels, int[] outPixels, int width, int height, boolean alpha, boolean premultiply, boolean unpremultiply, int edgeAction) Blur and transpose a block of ARGB pixels. setRGB(i,j,rgb); //where i,j is the boundaries of the image Here,i am setting all the pixel values with white. Le train…. 8) are averaged. Converts an Image to a BufferedImage: 27. Too bad, I have only very little time for my recreational image processing programming. The console is th, ID #3534797. The following are Jave code examples for showing how to use TYPE_INT_RGB of the java. Actually, the getRGB and setRGB methods, despite their names, actually returns and accepts a pixel in 32 bit packed ARGB format. Java has a variety of standard layout managers that can be used as parameters in the setLayout() method. Sets an array of integer pixels in the default RGB color model (TYPE_INT_ARGB) and default sRGB color space, into a portion of the image data. If it doesnt make sense, in java I would do something like this. getWidth ( ) , img. read(File vs URL) java,swing,file,url,javax. Object obj) throws java. I wanted to implement this part in my project, so please help me with this. You cannot specify these colours in HTML and CSS by their colour name but you can use their RGB hexadecimal value, eg:. the setRGB and getRGB methods can be incredibly slow on some systems (as much as two orders of magnitude slower than modifiyng the int[] array). This Java tip demonstrates how to get and set pixels in a buffered image. jar files are too big for your liking, you may extract those. This tutorial will cover how to apply textures to a model, as with the other “quad” tutorials we’ll build on the former knowledge about VBO’s and Shaders. Parameters: image - The array of integers with values between 0 and 255 inclusive. OK, I Understand. , so I know a lot of things but not a lot about one thing. However i don't understand what all the parameters are for. Note(Think intuitively): In a greyscale image the Alpha component of the image will be same as the original image, but the RGB wil be changed i. Note: This implementation is not space-efficient; it keeps the original image, plus a 'backup' array of Colors (one Color per pixel), plus every call to. ImageIO and java. dylib files from the JAR files without violating the license. Each Voronoi site s also has a Voronoi cell consisting of all points closest to s. AWT, Swing, JavaFX & SWT > Um dieses Array zu zeichnen Verwende ich eine und nicht über den "Umweg" mit setRGB. Java Array With Max And Min. getWidth ( ) , img. [java] Fastest way to draw to the screen By King Mir , December 5, 2007 in General and Gameplay Programming This topic is 4248 days old which is more than the 365 day threshold we allow for new replies. image; import java. Object A class which displays a picture, will give you an array of Colors, and let you set the picture's array of Colors. */ /* YOUR SUBMISSION MUST WORK CORRECTLY WITH _OUR_ COPY OF THIS FILE. This blog will show you how to export a two dimensional array of integers to a jpg (or png) image in Java. I'd really recommend you to read the question Java single Array best choice for accessing pixels for manipulation?. Object maps) Method Summary. java,arrays,image-processing,bufferedimage. *; import ij. Não use o setRGB, pois embora funcione, será menos eficiente (pois estará setando um pixel por vez). The BufferedImage subclass describes an java. management Provides the management interfaces for monitoring and management of the Java virtual machine and other components in the Java runtime. Search the history of over 376 billion web pages on the Internet. PrintWriter class −. Blender is an open source 3D graphics modelling and rendering environment which supports import and export of various file formats such as FBX and Collada. In Java please: public class Imaging{/*Inverts each value in a 2D array of integers between 0 and 255. The following are Jave code examples for showing how to use TYPE_INT_RGB of the java. unrecovered: that's plain rude man cheeser. [Ultrastar-ng-cvs] SF. Bitmap/Write a PPM file You are encouraged to solve this task according to the task description, using any language you may know. This is semantically equivalent to casting obj to GrayColor. Hi, Can anyone guide me on How can I make/create a jpg file if I have image pixel values? you can create an in-memory image using java. Machine learning, computer vision, statistics and general scientific computing for Android and Java - accord-net/java. Each two characters of the output will be one part of the ARGB set. Assigning Three-Dimensional Array Using Switch And Current Conditions. This page lists over 500 colours by colour name, Hex value, RGB value and Microsoft Access code number. 9: 7315: 58: Java converting Image to BufferedImage - Stack Overflow you need to convert BufferedImage to byte array in order to. BufferedImage: setRGB(int startX, int startY, int w, int h, int[] rgbArray, int offset, int scansize) : BufferedImage « java. edu is a platform for academics to share research papers. O problema de ser apenas azul deve ter algo a ver com o canal Alpha. No description. In OpenGL we have to do our own matrix calculations for translating, rotating and scaling the camera view and our model. Java Code Examples for com. We assume that each int represents a single pixel and its value is the colour of that pixel. That means that the size of an array cannot be changed once it is created. When an array is created, memory is allocated depending up on the size of the array and type of the elements array is going to hold. I know wanted to draw a "picture/fractal" with a function I created. In this theory part of the Image Processing Project we will learn about pixels. Currently, your m. process; import java. The pixel array I get from some native code (written in C) that I have to use, but I am presenting it in a Java GUI. A new Image object is returned which will render the image at the specified width and height by default. read(url); ByteArrayOutputStream baos = new ByteArrayOutputStream() Convert image to byte[] and viceversa (Java in General forum at Coderanch). org or BufferedImage's setRaster or setRGB methods. Answer import java. * This implementation makes ~ n lg n compares for any array of length n. Then modify the driver. package com. java import java. have a perfomance advantage instead of using setRGB and getRGB But I have the Problem that the BufferedImage and my DataBuffer isnt always synchron. Contribute to tigerlyb/Steganography-in-Java development by creating an account on GitHub. They are defined by classes in the package java. Caesar Cipher In Java - Writing A Caesar Cipher Program In Java Using Loops And Typecasting; Using Dll Library In Java Application Using Jacob - Illuststrate Using Dll Libraries In Java Application Tutorial; Basic GUI In JAVA (using JFrames) - Discussing Some Aspects In Creating Graphical User Interface In Java Tutorial. IOException, AutomationException The RGB value of color. Java DIP - Introduction. ArrayIndexOutOfBoundsException: Coordinate out of bounds! | 学步园 +复制链接. ArrayIndexOu. I am writing a code to get pixels value of the entire image and store it into a array. The Java Programming Forums are a community of Java programmers from all around the World. The number and types of bands in the SampleModel of the Raster must match the number and types required by the ColorModel to represent its color and alpha components. image viewer in java graphics. A BufferedImage is comprised of a ColorModel and a Raster of image data. image public void setRGB An array of BufferedImages from hdu with intensity values scaled to short. The following are Jave code examples for showing how to use getScaledInstance() of the java. It is assumed that you have completed the projects titled How to read and write image file in Java and How to get and set pixel value in Java before starting this project. The following code examples are extracted from open source projects. Applets involving graphics and animations usually look more exciting than applets that don't. classjourneymap/client/JourneymapClient. \$\begingroup\$ To increase the hits on your question you may wish to consider entitling it, "American Gothic in the palette of Mona Lisa: Rearrange the pixels" \$\endgroup\$ – DavidC Jul 9 '14 at 12:39. *; public class MedianFilter{ private int size; //size of the square filter public MedianFilter(int s) { if ((s%2. Here, in the code bellow, Black is denoted as 1 and white is denoted as 0. Java ImageIO. Não use o setRGB, pois embora funcione, será menos eficiente (pois estará setando um pixel por vez). PixelGrabber;importjava. The pixels can be retrieved by using getRGB() function. GcExcel Java is a high-performance spreadsheet component that comes packaged with all the necessary features to help users handle complex spreadsheet challenges in an efficient way. Futhermore, Java doesn't consider array access or field access to be operators. 8) are averaged. Create Unit2\Lab18\Driver18. Where image is the red color scale from 0 to 255, image is the green color scale from 0 to 255 and image is the blue color scale from 0 to 255. In android it may not make much of a difference but in Java, with JIT compilation, it may get compiled down faster/better as it is called. sqrt(2) * Math. image public void setRGB An array of BufferedImages from hdu with intensity values scaled to short. Also, no need to save to separate arrays. Now primarily the Java ArrayList can constitute of. In this set we will be converting a coloured image to greyscale image. Serious programmers in this domain use more than one tool/library, such as OpenCV, to work with images. Currently, I am converting the array of bytes to an Image, but I would prefer it to be a BufferedImage so it is easier to work with. *; import java. The length of each side of a triangle is 100 pixels. Note: Due to a Java bug, this example (and any other example using Swing on AWT) will not work on Linux platforms. w - width of the region. The length of each side of a triangle is 100 pixels. Finding The Max And Min With An Array And Getting The Index Of Each. It also demonstrates * how to load an image from a file (such as a JPG). We will learn how to store pixel value in a variable. invokepackage contains dynamic language support provided directly by the Java core class libraries and virtual machine. I cannot reproduce this behavior using Oracle Java 7 JRE. How to convert a Byte array to image. I need to create a valid image from these pixel values and save it. I cam changing some pixels in my pixel Array and when i save the image as tif file i get not the current image with the pixels in the array. You can vote up the examples you like. as i read you switch from jna to java-cpp also because of speed. import java. Related Java Topics beta. Java provides ImageIO class for reading and writing an image. *; /* ===== Coordinate system of a Canvas: 0 1 col# +----+-----+-----+ | | ^ 1 | | | | | | | | | height row# | (col#,row. Returns a float array containing the color and alpha components of the Color, in the ColorSpace specified by the cspace parameter. 最近做了一下验证码的功能,网上找了一篇还不错,引用下:http://blog. The image should be in black and white (since the input image is black and white as well). //Problem Set 3 : Problem 2 import java. management Provides the management interfaces for monitoring and management of the Java virtual machine and other components in the Java runtime. pdf), Text File (. I stick to that until this Java bug has been fixed (on Windows) B-) java. In Figure 2, SlideShow's GUI displays its introductory slide. 1: /* IndexColorModel. java) and run the application (via java Blender1). How to get pixel values of an image and how to set pixel value of an image in Java programming language. I think that limitation has been lifted though. But no one I can use. Java 7 Fork/Join Framework. Actually, the getRGB and setRGB methods, despite their names, actually returns and accepts a pixel in 32 bit packed ARGB format. 0 and Java 1. Graphics2D. java * Description: Chromaticity diagram applet * * Author: Gene Vishnevsky Oct. Draws a cardinal spline through a specified array of PointF structures. As such, the scores below are the averages over 50 executions on each image. What i "think" i've done so far is making an applet that paints to a JFrame. in the range [0,255] or [0. Where image is the red color scale from 0 to 255, image is the green color scale from 0 to 255 and image is the blue color scale from 0 to 255. You cannot specify these colours in HTML and CSS by their colour name but you can use their RGB hexadecimal value, eg:. ImageStack; /** This is an 32-bit RGB image and methods. These examples are extracted from open source projects. But, you probably would like also to create an new image as a pixel data buffer. IOException - If there are interop problems. Returns the image contents as a binary buffer. I have one 2D array. to do this first we have to know about histogram. PrintWriter class prints formatted representations of objects to a text-output stream. Sorting array of pixels: You'll need to make an array of their RGB values, not their objects. We have already discussed other popular java interview questions like difference between comparable and comparator and difference between arraylist and vector. I have to Serialize it to pass the object to a Servlet. Si l'on crée un tableau monTableau de longueur 58, puis qu'on attribue monTableau[10] = 'uneValeur' et monTableau[57] = 'uneAutreValeur', l'espace occupé correspondra seulement à ces 2 éléments, comme pour tous les objets. * JAVA to free the memory allocated for this panel. The number and types of bands in the SampleModel of the Raster must match the number and types required by the ColorModel to represent its color and alpha components. util; import java. Called by the constructor so you don't need to call it * yourself, however you can use it to reset the transform if you want to plug in another * image (although that image must have the same width and height) */ public void initialise() { // Calculate the maximum height the hough array needs to have houghHeight = (int) (Math. Setting individual pixels on a BufferedImage. I'd really recommend you to read the question Java single Array best choice for accessing pixels for manipulation?. Superpixel algorithm implemented in Java This Superpixel code has been stored on my hard drive for a year. java-gaming. On the previous pages, we saw how to create a BufferedImage in Java and how to set the pixels of an image using BufferedImage. The following are top voted examples for showing how to use java. Consider using System. raw download clone embed report print Java 0. Depois, seria suficiente ler o array 'misturada' e cada vez, você vai ter a certeza de ter um novo pixel. You can vote up the examples you like. //Problem Set 3 : Problem 2 import java. Class FITSImage java. BufferedImage; import java. image package contains classes and interfaces for manipulating images. for more information on unsharp masking see Wikipedia article. ArrayIndexOutOfBoundsException:搞不定啊(先进先得)数组越界? [问题点数:50分,结帖人nian86]. edu is a platform for academics to share research papers. How can I do it?. as i read you switch from jna to java-cpp also because of speed. Changing Pixels of a BufferedImage Changes Pixels for Other BufferedImages Tag: java , image , replace , pixel , bufferedimage I'm fairly new to Java, and completely new to editing images inside Java. You can click to vote up the examples that are useful to you. Object java. I'm a java newbie so do forgive me if this is a stupid question. We also have to adjust for the fact that each image row starts on a byte boundary. Blender is an open source 3D graphics modelling and rendering environment which supports import and export of various file formats such as FBX and Collada. lang The Quintessential Java Application Exiting a Java Program The Quintessential Thread Making an Object Cloneable Constructing a String Getting a Substring from a String Searching a String Replacing Characters in a String Replacing Substrings in a String Converting a String to Upper or Lower Case Converting a String to a Number Shifting. ImageIO; /** * 生成压缩图. I provide a Java program that illustrates four ways of drawing from a Java application, of which three provide pixel access. setPixels (…) o WritableRaster. Java example I described 1-d signal interpolation using B-spines basis functions. Graphics2D. *; import ij. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: