Matlab Find Index Of Value In Table

It is the position in string where the search will start. It was originally designed for solving linear algebra type problems using matrices. Can I somehow modify your solution to search for duplicate cells and get rid of them?. Is there a function or combination of functions that finds the exact or closest value in a range of values when the range of values is compared to a given lookup value given the following constraints. The first is to use the find function to find the indices of all numbers between 2 and 4 in the array, and then address the array with those indices:. Using the colon operator : and other methods for accessing information in a matrix. In terms of their ability to repeat a series of calculations, for loops and while loops are equivalent. A table in Matlab can be seen as an extended cell array. Sometimes, we would like to use the results of a Simulink simulation in the MATLAB command window for further calculations and plotting. However, “strfind” returns a cell array of indices. To make it more clear, let us assume I have a table of two variables "a" & "b". MATLAB Tutorial - LOOPING, IF STATEMENTS, & NESTING ES 111 6/6 This m-file will plot the function correctly as evidenced by the generated plot. Basically I have two columns of data containing the same entries so assume column A and column C are two such columns. I have found the index from each individual table in the cell array. That means MATLAB has run the function three times - once at the original value, once at the new a, and once at the new b. m in the current MATLAB folder or directory, you can execute the commands in the m-file by simply typing filename at the MATLAB command window prompt. Discover what MATLAB. If Y is a vector, then the x -axis scale ranges from 1 to length(Y). So my data sheet. 99 KB % Find the index of the returns. If X contains no nonzero elements or is empty, then find returns an empty array. A list of directories that MATLAB looks in to find m-files. MATLAB Command and Results sumM2 ans 7 1 6 8 d Use the sum function to add the from ENED 1091 at University of Cincinnati. find all elements in the array a that has value 1 or 2). This screencast is all about arrays -- what they are, how to access and modify individual elements and "slices" of an array, how to add rows and columns to a matrix, and the RESHAPE and transpose. string The string to search within. find Find indices of nonzero elements. However, it is also intended to be a course book instead of an all inclusive resource. find row with certain values. then compare the date in column D with the dates in column B and then throw up the nearest date. This is a more advanced tutorial in the MATLAB programming environment for upper level undergraduate engineers and scientists at Ryerson University. I have generated a table of data with time in one column with attempts 1-10 in the next series of columns. After the m-file is saved with the name filename. A method and apparatus for embedding auxiliary information into the digital representation of host data created by a lossy compression technique and a method and apparatus for constructing auxiliary data from the correspondence between values in a digital key-pair table with integer index values existing in a representation of host data created. Enter the following command to read CSV. This is useful for. Therefore convert it with table2cell. Basically I have two columns of data containing the same entries so assume column A and column C are two such columns. I need to find the average of those multiple y values, to give me a single line (or two lines if you prefer, one for the positive y values, one for the negative. Length of vector. The 'find' command only returns the indices of all the non-zero elements of a matrix. If X is a vector,. The first position is 1. To find the corresponding row index number of max or min value in column B: If there are duplicate max/min values in column B, it returns the row index number of first occurance of max/min value. MATLAB Command and Results sumM2 ans 7 1 6 8 d Use the sum function to add the from ENED 1091 at University of Cincinnati. One column (called 'active' - last column) is made up of 'True' and 'False' values. Can I somehow modify your solution to search for duplicate cells and get rid of them?. After the m-file is saved with the name filename. View more Search Strategies on how to find information in MatWeb. I tried to solve four non-linear equations in MATLAB using syms (symbolic toolbox) command. Symbol tables are implemented using cells, another SPICELIB data structure. You can use the ModelAdvisor. VBIN occur 25 times each? I don't think it will always be possible to draw 100 rows that meet this criteria. I am trying to find the max P04 for each value of i and the corresponding j and k values. MATLAB Function Reference : length. Note:More information on any Matlab command is available by typing \help command name"(without the quotes) in the command window. This colormap completely changes color with each index increment. I think my question is quite simple, but I can't figure out a way to do it. Matlab Function - Mean value-mean( ) Hash Tables. For the forms given, (6) Damping Ratio. This tutorial reviews how to import data, create trends and custom calculations, and then export the data in text file format from MATLAB. 2 shows additional MATLAB commands to get one started on MATLAB. Awarded to Jos (10584) on 31 Jul 2019. to pick number of plots you have to give index (3,2) as it's value falls in the index. Vectors In MATLAB a vector is a matrix with either one row or one column. It's not the main reason for using categoricals, but it's a convenience (one that string also provides). The parameters , , and characterize the behavior of a canonical second-order system. In this example it will print out the value of j. Default SWITCH. Matlab has special commands that will do this for you. Write a MATLAB program to determine the field E2 for arbitrary values of the permittivities εr1 and εr1. Write each of your conditions as separate logical arrays. Using the Z-table below, find the row for 2. Matlab - Creating a vector from matrices Tag: matlab , for-loop , vector , matrix , colors I have some color matrices like below and originally, there is only one color matrix and it works well. n = length(X) n = length(X) returns the size of the longest dimension of X. Q&A for Work. This is a more advanced tutorial in the MATLAB programming environment for upper level undergraduate engineers and scientists at Ryerson University. then compare the date in column D with the dates in column B and then throw up the nearest date. For example it additionally allows to name columns. Find the Index of the first occurrence of the maximum value in a vector and also the maximum value in the vector. Curly braces and dot indexing allow you to extract data from a table. Elementary math functions include logarithms, exponentials, absolute value, rounding functions, and functions used in discrete mathematics. Delete entire row if a specific column contains a zero (self. When Matlab reads the for statement it constructs a vector, [1:4], and j will take on each value within the vector in order. If none are found, find returns an empty, 0-by-1 matrix. QUICK INTRODUCTION TO MATLAB PART II Department of Mathematics University of Colorado at Colorado Springs MATLAB is a versatile programming language designed primarily for operating with numerical data. Recently, my colleague Jeff asked me if I would look at some code he wrote to find a pattern of numbers in a larger array. Also notice how the time had to be redefined. The first index in the Object[][] array is the row index and the second is the column index. I need to find the index of the closest element in 'aRef' for all elements in 'aTest'. You can specify a variable in a MATLAB table using tablename. A Quick Introduction to Loops in Matlab Loops are used to repeat sequences of calculations. Special Functions help Displays help information for any MATLAB command lookfor from MATH 2T03 at McMaster University. Indicate the half life on the plot. This makes 256*256*256=16777216 possible colors. Finally, sorted_index is the index or original ordering of each value A. MATLAB image processing codes with examples, explanations and flow charts. When Matlab reads the for statement it constructs a vector, [1:4], and j will take on each value within the vector in order. MATLAB uses 1-based indexing, so it should read index(1) in your loop solution - Amro Jul 20 '12 at 13:38 Similar to: Find the location and determine the corresponding value of another array having the same location of one array - Amro Jul 20 '12 at 13:41. Yes_Index = find (strcmpi %Going to create a new table with only the. The data for this example is a list of people's names. The indices for a Map can be nearly any scalar numeric value or a character vector. I Have a code that gives me some output in my command window as a 9 by 80 matrix. A and B should be equal to the mean of the vector x. xls," on your computer. How to use VBA to find max value HI all, How do I use VBA to navigate to the MAX value in range C2:C20 and then make the font bold? Thanks, JIm T. The cell routines SSIZEx should be used for this initialization. Import all product data from a Microsoft® SQL Server® database table into MATLAB® by using the connection object. We only load the first 3000 changed files. [N,edges] = histcounts(X) partitions the X values into bins, and returns the count in each bin, as well as the bin edges. View more Search Strategies on how to find information in MatWeb. Table of Contents. I just wanted to jot down a few points about Matlab programming. The command-line equivalent is useful because it can be placed into scripts that can be executed automatically. For example, you may want to attach a time or date stamp to the end of a variable name. For any input cell whose text does not contain 'bla', "strfind" returns an empty cell. (I don't reply to personal email messages through matlab central unless they pertain to one of my file exchanges). A file was provided that checks to see if its right. If I have a few matrices defined, say A1 A2 A3 I want to use a loop to call out these individually. The purpose of this project is to develop an Automatic gate control application which recognizes license plates from cars at entrance gate and take an action to let cars enter or not. SWITCH among several cases based On expression. Find three largest and smallest values in column Learn more about index, matrix, table, large, small, min, max, find, search, indexing, mapping, columns, multiple. But when I have same values as in my example (5, 5) it deletes them both. Text searches can be performed from any page - use the Quick Search in the bar at the top right. Learn more about search, find MATLAB Answers. Now I would like to find the names match from the table and extract the values of other variables Gender, Age, Smoker, BloodPressure. If X is a vector, then find returns a vector with the same orientation as X. For the forms given, (6) Damping Ratio. I'm writing some code in openCV and want to find the median value of a very large matrix array (single channel grayscale, float). Matlab Function - Mean value-mean( ) Hash Tables. n = length(X) n = length(X) returns the size of the longest dimension of X. Notice how the index was changed in the definition of CA to avoid referencing the 0 th element. Tall arrays and tall tables know how to read the data in one chunk at a time, perform the calculations you want, and then gather up the output at the end. There is an additional command that is used for displaying results and that allows you a great deal of formatting flexibility. This example looks at how to use the MATCH function if your list doesn't contain any duplicates. table tool to create customized data tables. list (max (B),B) list (min (B),B) To find the corresponding x value of max or min value in column B, suppose B is an Y column. I just wanted to jot down a few points about Matlab programming. fuzzy:1174 comp. '') Also, let d be our desired value, in our example the saturated. This property is an m-by-1 array of non-NaN alpha values. Please click below onto the label to load the interactive demonstration on MATLAB matrix indexing. After the m-file is saved with the name filename. Hi everybody! Hope that somebody can help me, I'm relative new to matlab and are wondering if I have an excel file with a table containing both names an numbers, and I want to use a number related to one of the names in a function when the name is an input argument, am I supposed to use a loop or what?. -The script for finding a particular column or row its outside of the bounds of the table. Now that you know the locations of the elements meeting the condition, you can inspect the individual values using ind as the index array. For any input cell whose text does not contain 'bla', “strfind” returns an empty cell. however, if you use: hist(a,b), then the repetitions are counted against the reference (b). How to Use This Handbook The MATLAB Handbook is a complete reference tool for the MATLAB computation language, and is written for all MATLAB users, regardless of their discipline or field(s) of interest. For any input cell whose text does not contain 'bla', “strfind” returns an empty cell. Best How To : There are some optional arguments to find that allow you to get only the first N results. I need to find the index of the closest element in 'aRef' for all elements in 'aTest'. Potentially a pdf online would be cool as well. Once Matlab reads the end statement, it will execute and repeat the loop. All other statement outputs need to be suppressed. I've tried using interp1 but it hasn't worked for me as I have the y value and is the x value the one I need to find. University of Rochester, NY New Bulgarian. To get the most precise answer possible, you will want to give MATLAB a very large number of points - say, 1 million. 833334833334833e+00 - very close to finding the minimum of y=-1. then compare the date in column D with the dates in column B and then throw up the nearest date. Examine Contents of Map. of x values at that index to determine which x value. I'm new to Matlab, sorry for this very simple question. Values of the normal distribution. Discover what MATLAB. find row with certain values. If so, use it. \classes\com\example\graphics\Rectangle. I still have not found a solution to the problem of the MATLAB table not showing data in an executable. Curly braces and dot indexing allow you to extract data from a table. Section 2 describes briefly the steps to implement the ITAE criterion in Simulink and MATLAB, Section 4 is devoted to the cases studies: tuning PID control-ler’s parameters for processes translated by first. In previous versions of MATLAB, you can use the “strfind” function. I have found the index from each individual table in the cell array. In this second worksheet, you will learn the basics of generation, storage and analysis of such data. As opposed to Python, which is an expert at string, Matlab could look sort of limited in this domain. If not, MATLAB then checks to see if problem1 is one of its own commands, and executes it if it is. table tool to create customized data tables. The parameters , , and characterize the behavior of a canonical second-order system. The scalar values are used as an index into the color lookup table. txt where every significant cluster is displayed (1-4). For example, if A x = b and you want to find x, a slow way to find x is to simply invert A and perform a left multiply on both sides (more on that later). A file was provided that checks to see if its right. This MATLAB function returns the minimum spanning tree, T, for graph G. ==== [ article 18387 ] ===== Xref: til comp. 0 Comments. 833334833334833e+00 - very close to finding the minimum of y=-1. I am trying to find the max P04 for each value of i and the corresponding j and k values. If X is a vector,. The m-file must have the same name as the name in the function declaration. A table is a container for storing column-oriented variables that have the same number of rows. Electronics and Circuit Analysis using MATLAB. Matrix multiplication is possible only if the number of columns n in A is equal to the number of rows n in B. How I can find index of element in array?. The size and cardinality of the components of a symbol table must be initialized before the symbol table can be used properly. The data for this example is a list of people's names. Still you can do many things to manipulate this element. The first is to use the find function to find the indices of all numbers between 2 and 4 in the array, and then address the array with those indices:. txt where every significant cluster is displayed (1-4). In computer science, a lookup table is an array that replaces runtime computation with a simpler array indexing operation. Suppose I have a 1x4 cell array and each cell contains a (x,y) co-ordinates. 833333333333333e+00 The problem, however, is that if you want to graph this, one million points is somewhat absurd. For example, suppose you want to find p(Z < 2. In this second worksheet, you will learn the basics of generation, storage and analysis of such data. Map Tutorial; MATLAB validateattributes; MATLAB UNITTEST TUTORIAL; MATLAB MISC. Each MATLAB figure window has a colormap associated with it. I tried to use isfield, but this does not work and I am running out of ideas. You may have used a variable called "i" earlier in your program or session, thus overwriting the imaginary constant i with your own number. Learn more about indexing, array using for loop and if statement, but did Matlab doesn't have build-in similar function. If X is a vector, then find returns a vector with the same orientation as X. For example it additionally allows to name columns. Once Matlab reads the end statement, it will execute and repeat the loop. Elementary math functions include logarithms, exponentials, absolute value, rounding functions, and functions used in discrete mathematics. If the energy value is greater than a high value threshold or less than a low value threshold then a second counter is incremented. Learn more about search, find MATLAB Answers. In Matlab, everything that can be done using the GUI interface (e. Truth Table for Logical Operations. Access Data in a Table Ways to Index into a Table. To get the most precise answer possible, you will want to give MATLAB a very large number of points - say, 1 million. A table is a container for storing column-oriented variables that have the same number of rows. Section 2 describes briefly the steps to implement the ITAE criterion in Simulink and MATLAB, Section 4 is devoted to the cases studies: tuning PID control-ler’s parameters for processes translated by first. How to set an index on a table. MATLAB can plot a 1 x n vector versus an n x 1 vector, or a 1 x n vector versus a 2 x n matrix (you will generate two lines), as long as n is the same for both vectors. As opposed to Python, which is an expert at string, Matlab could look sort of limited in this domain. Numerous other functionalities are available by accessing the underlying Java table and hidden Matlab properties. This property is an m-by-1 array of non-NaN alpha values. neural-nets:12451 Newsgroups: comp. The red, green and blue use 8 bits each, which have integer values from 0 to 255. Specify the 'Keys' name-value pair argument, or both the 'LeftKeys' and 'RightKeys' name-value pair arguments. I find it best to close all the other windows, except maybe the command history window, as the rest are a bit useless. Indexing of a table. mean function is used to obtain the mean or average of an array or a matrix. MATLAB is a high-level language and interactive environment for numerical computation, visualization, and programming. way to get the index of a row in which two (or n) values exist. The first…. Using MATLAB, you can analyze data, develop algorithms, and create models and applications. find Find indices of nonzero elements. Toggle Main Navigation Logical indexing: Find row in table by text in column If you want the index to the row. A list of directories that MATLAB looks in to find m-files. index of the elements in x. > Using Matlab, I need some way to automatically find the point where an > arbitrary filter response crosses a threshold. Less often, we would like to generate signals in MATLAB which we can then use as inputs in a Simulink model. The spacing of the ribs is the key parameter to produce the d-type, intermediate and k-type roughness flows. In this case, it is easiest to create the vector in one Matlab statement. In Matlab, loops can be implemented with a for end construct or a while end construct. sum Sum of elements. I would like to know how to code to return the three largest and smallest values in column 4. 'TreatAsEmpty' only applies to numeric columns in the file and cannot handle numeric values specified as text, such as '-99'. Find Study Resources. More Detailed Property Search Instructions and Examples Notes: Scientific notation may be used in the Min. VBIN occur 25 times each? I don't think it will always be possible to draw 100 rows that meet this criteria. '') Also, let d be our desired value, in our example the saturated. A look at Table B. Learn more about vector, indexing, equals MATLAB. VBIN occur 25 times each? I don't think it will always be possible to draw 100 rows that meet this criteria. Also notice how the time had to be redefined. The histcounts function uses an automatic binning algorithm that returns bins with a uniform width, chosen to cover the range of elements in X and reveal the underlying shape of the distribution. a1 is categorical, you can use ==. 2, 4, 5] and an element x=3 In vector a, how to find the exact entry which is bigger than x? Let's say a[] is a sorted vector. The variables in a table can have different data types, but must have the same number of rows. The first position is 1. The goal of this post is to introduce you to the usage of strings in Matlab and to help you loosen the knot…. This colormap completely changes color with each index increment. The translator: aims to do much of the tedious work of converting source code from MATLAB: to Julia, in hopes that a MATLAB user who is curious about Julia could. Using T1, matlab will calculate T2, look through the second excel sheet, and assign the corresponding values to the correct variables; and so forth and so on. In matlab I would have written Deltaneff=max(neff)-neff I cant seam to do this straightaway in COMSOL so I've started by creating a table with "Maximum: mode index", but can I use the values from the table in the Derived values somehow? or is there an easier way? How can I calculate and display this as a function of wavelength?. 208333333332658e+01 and its x-coordinate is -1. For the forms given, (6) Damping Ratio. Today on the newsgroup, a user wanted help finding when values in a matrix matched some other values (see the post). ; x = -1 + 2*rand(10,1). If not, MATLAB then checks to see if problem1 is one of its own commands, and executes it if it is. Index 44 1 Introduction 1. When you type problem1, 1. Length of vector. I need to get the row index corresponding to the first instance of a 'True' value in that specific column. MATLAB App Designer Tutorial 1; MATLAB App Designer. For any input cell whose text does not contain 'bla', “strfind” returns an empty cell. Logical indexing is closely related to the find function. 0 a z V/m, find E2. so I have to get the value from the row with other method, all the tables has the same columnName and the tablesname are deferent, the the within the tables are simple strings, so I need to get a ramdon row for each table, I hope this helps, I have tried everything and anything works!!. when i execute it, it says, "Attempted to access x(6); index out of bounds because numel(x)=5. I want matlab to run through a range of temperature inputs (T1), find that value in the first excel sheet. How to set an index on a table. Also notice how the time had to be redefined. We only load the first 3000 changed files. I have a table (called T) of multiple columns of different types (int & string). First off, as far as I know, I don't think you can get MATLAB to create an actual "table" without the use of GUI's or a toolbox. Find index with multiple condition, using find Learn more about multiple vector comparison, find function, & condition with multiple size, large files. The index value specifying the attribute you want to view. If a variable contains an empty array, disp returns without displaying anything. How to find unique/duplicate values between two columns in excel? For example, I have two columns of different length filled with student names, and now I want to compare these two columns to select all values in column A but not in column B, and select all values in column B but not in column A. I was curious to know if there was any good books to read as a tutorial of matlab. This vector can be used to index into arrays of any size or shape. The parameters , , and characterize the behavior of a canonical second-order system. Then, determine the highest unit cost among products in the table. Write a MATLAB function to imp Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. This colormap completely changes color with each index increment. 2016-04-01T16:10:09 zyp> that's very hardware dependent 2016-04-01T16:10:33 kakimir> hahhah 2016-04-01T16:10:47 kakimir> I bought the apple raspberry totally 2016-04-01T16:10:54 lorenzo> zyp: I'm curious how he got 27k cycles on msp430, that seems way too high 2016-04-01T16:11:06 kakimir> because that company tries to desperatelly be any. The other dimension can vary. Vector Indexing, Logical Indexing, and Find A matrix index can be either a scalar (single value) or a vector. Find index with multiple condition, using find Learn more about multiple vector comparison, find function, & condition with multiple size, large files. MATLAB function in script; MATLAB Implicit Expansion; MATLAB Live Editor Intro; Use MATLAB to implement a simple blockchain; MATLAB App Designer. Unfortunately, this technique does not always work well, and an alternative mechanism. Toggle Main Navigation. Otherwise, Variables is a table created from the input data matrix X and response the vector y. Statements in the loop that appear after the break statement are not executed. find all elements in the array a that has value 1 or 2). Tall arrays and tall tables know how to read the data in one chunk at a time, perform the calculations you want, and then gather up the output at the end. Matlab Function - Mean value-mean( ) Hash Tables. A file was provided that checks to see if its right. Discover what. 0 a z V/m, find E2. so when you count the occurrences of each element in (a) against. MATLAB uses 1-based indexing, so it should read index(1) in your loop solution - Amro Jul 20 '12 at 13:38 Similar to: Find the location and determine the corresponding value of another array having the same location of one array - Amro Jul 20 '12 at 13:41. MATLAB allows you to append vectors together to create new vectors. Start Matlab by clicking on the icon on your desktop, and a variety of windows will open up. For the forms given, (6) Damping Ratio. Alternatively, you can grow a K d-tree or prepare an exhaustive nearest neighbor searcher using createns. Vector Indexing, Logical Indexing, and Find A matrix index can be either a scalar (single value) or a vector. Matlab was designed for dealing with numbers, not strings. I tried to use isfield, but this does not work and I am running out of ideas. list (max (B),B) list (min (B),B) To find the corresponding x value of max or min value in column B, suppose B is an Y column. Index of max and min value in an array 3 answers I'm trying to find the maximum value of a certain column in a matrix. But Matlab is a programming language and it is important to learn the basics of good programming so that you will be able to use Matlab for research and applications. This package provides an efficient implementation of locality-sensitve hashing (LSH) - YahooArchive/Optimal-LSH. Import data from the Patients table by executing the SQL SELECT statement using the select function. If E1 = 24. Indexing of a table. Printing a string array above a table of numerical values, for example, can help you quickly make sense of the column and row information. This is in principle a quadratic problem, although, it can be reduced to a NlogN (in time) problem via sorting (provided your arrays are. Map Tutorial; MATLAB validateattributes; MATLAB UNITTEST TUTORIAL; MATLAB MISC. Find rows in matlab table. a=[1 2 3 1] Discover what MATLAB. The expression A(A > 5) is equivalent to A(find(A > 5)). Enter the following command to read CSV. In previous versions of MATLAB, you can use the “strfind” function. As the equations were completely non-linear , MATLAB displays" Empty sym: 0-by-1 " and cannot find the. I was trying to make a program using guide to load data from excel or text file and then to display them on a table. You may also have variable names stored in a string or cell array that you want to instantiate as variables. For example it additionally allows to name columns. The first…. MATLAB allows you to append vectors together to create new vectors. The downloadable function [index,closestval] = val2ind(v,val) returns the index and the value of the element of vector 'v' that is closest to 'val' (download this function and place in the Matlab path). Another way to display a variable is to type its name, which displays a leading "X =" before the value. I have a table and I wish to store the value of the 'rating pts' column in a variable when the column 'yds per att'= 7. Try running the program with CAo = 20 and t = 10. Only the real parts of complex data are used in the fit. I have an m by n matrix in MATLAB, say M. The distinction between row vectors and column vectors is essential. Results and Recommended Actions. logspace Creates logarithmically spaced vector. MATLAB GUI codes are included. This screencast is all about arrays -- what they are, how to access and modify individual elements and "slices" of an array, how to add rows and columns to a matrix, and the RESHAPE and transpose. Find Study Resources. Learn more about Teams. The first position is 1. Data are frequently available in text file format. If A is an m x n matrix and B is an n x p matrix, they could be multiplied together to produce an m x n matrix C. I need to find the index of the closest element in 'aRef' for all elements in 'aTest'. 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. 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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: