For example, if the value is 0.0000055369410, Stata exports this number as 5.5369410e-06. one nanometre = 1nm = 1 x 10-9m. Create a bar chart. Introduction To MATLAB Programming - ppt video online download #271191. It integrates computation, visualization, and programming in an easy-to-use environment where problems and solutions are expressed in common mathematical notation. That’s the way many computer programs and languages do scientific notation. Some of the examples draw on first-year university level maths, but these are self-contained so that their omission will not detract from learning the principles of using MATLAB. Columns 1 through 7. You can change the display in the Command Window or Editor using the format function. You can enter a command by typing it at the MATLAB prompt '>>' on the Command Window.. format long x. x = 1.333333333333333. To display the maximum number of digits in a variable without using scientific notation, set the output display format to "longG":. Display the tick labels along the y -axis in dollars. When using the % signs to print out the data stored in variables, we must use the same number of % signs as the number of variables. As you can see based on the previous RStudio console output, base R formats this number automatically to an exponential notation (i.e. Create a bar chart. or. For example, x = 4/3. I am very new to MATLAB so a basic explanation is much appreciated. x = 1.3333. Display the y -axis tick labels in dollars with and without decimal values. You can change the display in the Command Window or Editor using the format function. I am interested in how I set this format when I import data from excel into a table in Matlab I see the scientific value, I want to see the full number value in the table? I tried to cast it to string but scientific notation appears and both string and decimal lose the last digits.. You can use the format command control the numeric display format. It consolidates calculations, visualization, and programming in an easy-to-use environment where problems and answers are expressed in familiar binary notation. When you are going through the MATLAB interface, the only options you have for representation in MuPAD are those shown under "flag" in the documentation for "sym". MatLab: Changing the format of the output in Matlab. Based on your location, we recommend that you select: . 1.3342e+012. Found inside – Page 47MATLAB can handle negative, fractional, and complex number bases as exponents. Here Why we use the letter E(or e) for scientific notation Organizing Your ... The code is, for example, Found inside – Page 28With MATLAB and Spreadsheet Applications, EBook Steven T. Karris ... We observe that Excel displays this number in scientific notation, i.e., 2.1E+07. For instance, to convert signed 32-bit data to hexadecimal format, a = [6 10 14 44]; fprintf('%9X\n', a + (a<0)*2^32) 6 A E 2C ans =. Found inside – Page 49It always attempts to display integers (whole numbers) exactly. However, if the integer is too large, it is displayed in scientific notation with five ... command line. format long. Excel uses scientific format automatically for large and small numbers of 12 digit values or more. First, you need to understand how scientific notation works in mathematics and then learn the same in excel. In this example, we will take an array of random numbers and will use longE type to format the output. Found inside – Page 5A MATLAB Introduction to Computational Science and Engineering Charles F. Van ... value ofA is so large, its value is displayed using scientific notation. Strickly speaking neither command gives the proper number of significant digits. sprintf('%16.f',2332456943534324) Related Question. Found inside – Page 24... format short e and format long e to display numbers using scientific notation. ... Typing MATLAB commands at the keyboard is fine if you are doing a ... Thanks, Ori Found inside – Page 44There are several ways to display output data in MATLAB. ... and it may be displayed in scientific notation with an exponent if the number is too large or ... To display the maximum number of digits in a variable without using scientific notation, set the output display format to "longG": format longGAfte... I am using the str2double function and it always rounds the conversion to the 4 places after the decimal point. I am trying to figure out how to edit the format of the labels on the colorbar. For example, x = 4/3. Found inside – Page 372.3.3 Number Display Scientific Notation Although you can enter any number in decimal notation, that isn't always the best way to represent very large or very small numbers. For example, a number that is used frequently in chemistry is ... x = 1.3333. MATLAB is an interactive system whose basic data type is the array or matrix. Call the tiledlayout function to create a 2-by-1 tiled chart layout. Python answers related to “matplotlib remove scientific notation” get rid of axes numbers matplotlib; how to display printed values without scientific notation python Learn more about scientific notation, integer Bioinformatics Toolbox Re: 'Scientific notation'. In the following examples, I will show you two ways how to disable this notation in R. Found inside – Page 168By default, MATLAB, displays numbers in “short” format (five significant ... short e Scientific notation with 5 significant digits format long e Scientific ... format long or sprintf('%16.f',2332456943534324) Starting in R2019b, you can display a tiling of plots using the tiledlayout and nexttile functions. Are Symbol Fonts not preserved when I export graphics in MuPAD to EPS format in MATLAB (R2011b) My annotation of Greek letters fails with capital letters and without them. Exponential notation, such as 3.141593e+00 (Use a precision operator to specify the number of digits after the decimal point.) Some common format options: %s - print a string %c - print a single character Since bigint can only deal with number less than 19-digit, casting it to bigint results in a wrong number.. This is important sometimes when small numbers are part of a vector with larger values. ... MATLAB/Octave wont shorten long number… Scientific notation is a mathematical expression used to represent a decimal number between 1 and 10 multiplied by ten, so you can write large numbers using less digits. An example of scientific notation is when you write 4 x 10³ for 4,000. Found inside – Page 46TABLE 2.3 Precision Formats MATLAB Instruction Numerical Output exp(1) format short ... a number times 10 raised to a power, emulating scientific notation. It means the same thing as [math]1\times10^{-6}[/math]. Found inside – Page 17The default MATLAB display format is the short format , which uses four decimal digits . You can display more by ... You can force the output to be in scientific notation by typing format short e , or format long e , where e stands for the number 10. Thus the output 6.3792e ... Some items can be selected without the menu being open by using the shortcut key listed to the right of the item . Those items followed ... Found inside – Page 11MATLAB interprets them as three different statements and executes in an order ... in a scientific notation with five significant digits, e.g. the number ... rn - Free ebook download as PDF File (.pdf), Text File (.txt) or read book online for free. Stop scientific notation in uitable - Stack Overflow #271177. The sprintf command seems to print out exponential notation when decimal notation is requested (second and third example): Even the ever-klunky Excel (what a misnomer!) For example, a 2-decimal By default, MATLAB displays floating point values using what's called a scaled fixed point format, resulting in 4 digits displayed after the decimal point. Found inside – Page 42... floating point number of 14 decimal places, then MATLAB will automatically convert it into scientific notation. >> y=x*10000; >>disp(y) % this gives the ... format long x. x = 1.333333333333333. Setting the output format to short or long does not affect the display of integer-type variables. to display a value. There is no format setting for fixed point. Same as %e, but uppercase, such as 3.141593E+00 (Use a precision operator to specify the number of digits after the decimal point.) 195. Get code examples like "convert float to scientific notation python" instantly right from your google search results with the Grepper Chrome Extension. MATLAB® returns the format as … Be sure that numbers in scientific notation are compatible with MATLAB's format. For example, this code displays the number 2332456943534324 in decimal notation: Other MathWorks country sites are not optimized for visits from your location. 4. The format command affects only how numbers are displayed, not how they are computed or saved. For example the scientific notation %14.6f requires at least 7 (8 on some systems) characters in addition to the number after the decimal point for the sign, the digit to the left of the decimal point, the decimal point, the exponent which is e-01 or e-001 depending on the operating system. Found inside – Page 28... x2) MATLAB displays the following: The roots (zeros) of this function are ... the values will be displayed and printed in scientific notation format. It’s value is 0.000001 . Found inside – Page 236When MAtlAB prints values, it often uses a notation similar to scientific notation, but written without the exponent. For example, Avogadro's number is ... The diameter of a carbon nanotube is 5.2nm. Show Hide -1 older comments. >> result {1} ans =. Found inside – Page 9Numerical Format Types Style Display Example format short Shows 4 decimal ... Shows 4 decimal digits in scientific notation 3.3333e-01 format longe Shows 15 ... Matlab displays the results of any assignments statement on the screen, and assigns it to the specified variable, or to ans if no variable is given. MATLAB is an interactive system whose basic data type is the array or matrix. MATLAB is a high-performance language for technical computing. 2.Click Kutools > Content > Convert between Text and Number, see screenshot:. Found inside – Page 10Type more off to disable paged output . ... When you enter help by itself , MATLAB will also display a list of all of your directories defined in the MATLAB search path environment variable MATLABPATH . These are directories ... For example , to see a five - digit floating point display ( scientific notation ) enter format short e . Let us now see the code to use the format function for longE type in Matlab. Found inside – Page 80The display for a number can be set either in the Preferences dialog box, ... Scientific notation uses the letter e to specify a power-of-ten scale factor ... In this section, we will provide lists of commonly used general MATLAB commands. With our problem now defined, let's jump into MATLAB and get started. A number format does not affect the actual cell value that Excel uses to perform calculations. Explicitly convert MATLAB double-precision variables to integer values for use with an integer conversion specifier. scientific notation. n. A method of writing or displaying numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10. In scientific notation, nonzero numbers are written in the form m × 10 n. or m times ten raised to the power of n, where n is an integer, and the coefficient m is a nonzero real number (usually between 1 and 10 in absolute value, and nearly always written as a terminating decimal).The integer n is called the exponent and the real number m is called the significand or mantissa. Display the tick labels along the x -axis in dollars. Format BigDecimal without scientific notation with full precision. Found inside – Page 1-37( The display format does not affect MATLAB's accuracy in computations . ) Numbers are entered in MATLAB without commas . The number 600,000 in MATLAB scientific notation is 6e5 . A small number such as .00000012 is 1.2e - 7 . Found inside – Page 26Use the number format commands in MATLAB and Octave to display the ... default number of decimal places, 15 decimal places and in scientific notation: (a) 4 ... your method works for the output values. Create a bar chart. format long x. x = 1.333333333333333. Create the … Found inside – Page 6... short e scientific notation, 5 digits format long e scientific notation, ... These commands only modify the display, not the precision of the number or ... MATLAB® returns the format as a character vector containing the formatting operators. Evaluate using these three methods in MATLAB. Found inside – Page 266number, display output, format, 19 scientific notation, 20 num2str, 41,250 O ode, 175, 250 ode15s, 175, 177, 250 ode23, 175, 250 ode23s, 175, 250 ode23t, ... format mypi = pi. Found inside – Page 772I/O commands: disp fclose fopen fread fwrite fgetl fgets fprintf fscanf feof ... (default) fixed point with 14 decimal places scientific notation with 4 ... This gives me numbers in a format that I like as often as possible, only going into scientific notation when necessary. Display the y -axis tick labels in dollars with and without decimal values. ... How do I change the number display from scientific notation to the ... #271190. MATLAB, like most programming languages, does not store numeric values as "decimal" but as binary, so I have no idea what you mean by "I want covert the value of a in decimal form".The value is stored as the closest binary representation of the number that you have given, which is the best that we can do unless we get into more complicated numeric formats. 0. Found inside – Page 166Remove/clear/delete the two variables x and y. clear x y 9. ... name floating-point numbers, %e for scientific-notation floating point, and %g to. Use scientific notation to enter this value in metres. mypi = 3.1416. and we can see that the variable mypi is stored as a double precision value. We will follow the following 2 steps: Pass the type as ‘longE’ to format function. Call the nexttile function to create the axes objects ax1 and ax2.Plot into each of the axes. By default, MATLAB ® uses 16 digits of precision. For higher precision, use vpa. The default precision for vpa is 32 digits. Increase precision beyond 32 digits by using digits. MATLAB: How to reformat the colorbar values from scientific notation to standard notation. The diameter of a carbon nanotube is 5.2nm. matlab scientific notation issue. Found inside – Page 31Default format Scientific notation Display Format . ... Scientific notation expresses a value as a number between 1 and 10 multiplied by a power of 10. ... TABLE 2.1 Numeric Display Formats MATLAB Command Display Example format SEC . colorbar format imagesc. Is their a way to keep the number in decimal form? Learn more about numeric display MATLAB Format Number (exponential notation). it is important to omit blanks between the mantissa and the exponent what is "6.02 e23" read as in matlab Any answer; How to write matrix with greek letters; Display number with units in scientific notation (format compact) Do I get an invalid interpreter on the annotation request For example, a 2-decimal scientific format displays 12345678901 as 1.23E+10, which is 1.23 times 10 to the 10th power. when displaying a matrix i just want it to display it wit whole numbers and decimals but is comes out like this. Lame, lame, lame. MATLAB Interview Questions. MATLAB: How to use str2double without rounding. Found inside – Page 46TABLE 2.3 Precision Formats MATLAB Instruction Numerical Output exp(1) format short ... a number times 10 raised to a power, emulating scientific notation. your method works for the output values. MATLAB® returns the format as a character vector containing the formatting operators. Display Format for Numeric Values. MatLab: Changing the format of the output in Matlab. Learn more about format, exponential, notation . Select a Web Site. Here's the value of pi displayed with the default format in MATLAB. This is best explained via example. 1.Highlight the data range that you want to convert. You may want to only show a few decimal places, or print in scientific notation, or embed the result in a string. Three different methods to calculate the value of the power series are shown. what should you look out for when expressing a variable in scientific notation with matlab? 1.0e+05 *. Found inside – Page 65... be used to display the contents of the file; note that scientific notation ... later there would have to be the same number of values on every row (or, ... For example, x = 4/3. By default, MATLAB ® uses a 5-digit short format to display numbers. Matlab also has numerous libraries geared toward scientific and commercial applications including: solving systems of ODEs, signal processing, wavelets, equation solving, linear and nonlinear optimization, neural networks, image processing, interpolation, polynomials, data analysis, Fourier transforms, elementary and special mathematical functions, and digital audio. Choose a web site to get translated content where available and see local events and offers. Dealing with a 20-digit account number: 21345698778965412365 . MATLAB is a high-performance language for numerical computing. Integer-valued, floating-point numbers with a maximum of 9 digits do not display in scientific notation. Here are some examples of … Columns 8 through 11. 0. Found inside – Page 114Comprehension Check 5-4 Express each of the following values in scientific and engineering notation. (a) 58,093,099 (b) 0.00458097 (c) 42,677,000.99 Some computer programs like MATLAB give you an option to display numbers in ... After that, write the number 15.12345678, press enter; MATLAB displays the digit as 1.5123e+001. ... Find the treasures in MATLAB Central and discover how the community can help you! Format Matlab data to only have digits after the decimal place. Found inside – Page 47a = 'finite element'; >> disp(a) finite element >> a a = finite element ... number Prints a floating-point number in scientific notation %s Prints a ... MATLAB: How to change the number display from scientific notation to the full number in digits. After installing Kutools for Excel, please do as this:. The format command affects only how numbers are displayed, not how they are computed or saved. rounding str2double. Found inside – Page 37Scientific notation is used by MATLAB and Octave to display very large and very small values. For example: ans = 5.77262e+123 The mathematical equivalent ... Found insidedouble type, meaning that it will be stored as a floating point number with 64 bits ... Just as we can write a floating point number in scientific notation, ... Found inside – Page xliiThe real(z) and imag(z) functions display the real and imaginary parts of the ... the values will be displayed and printed in scientific notation format. This gives me numbers in a format that I like as often as possible, only going into scientific notation when necessary. It integrates computation, visualization, and programming in an easy-to-use environment where problems and solutions are expressed in common mathematical notation. x = 0:20:100; y = [88 67 98 43 45 65]; bar (x,y) ytickformat ( 'usd') Query the tick label format. Scientific notation In MATLAB (and other programming languages) a convenient shorthand for this is 1.4e6. Scientific notation. You can change the display in the Command Window or Editor using the format function. MATLAB is an interactive program for numerical computation and data visualization. MATLAB is a high-performance language for technical computing. The precision field can be modified using member precision. Found inside – Page 8Generally speaking, this will display a number up to four decimal places, while format long will display 15. In scientific notation, this amounts to five ... This was first worked out in this original Matlab post. Found inside – Page 45Likewise , when a result is a real number , MATLAB displays it with approximately four digits to the right of the decimal point . If the significant digits in the result are outside of this range , MATLAB displays the result in scientific notation similar ... MATLAB: How to use str2double without rounding. Found inside – Page 300Note that using the format %0.5 g in the fprintf command causes MATLAB® to display the thermal mass in scientific notation and to display only three ... there is no type in format that generally tells MATLAB to use such a format. Found inside – Page 3MATLAB has several different screen output formats for displaying numbers. ... ans = 50.14285714285715 format short e Scientific notation with 4 decimal ... rounding str2double. Engineering format was indeed used for the output, and the output is not the same as the format of the value that was read in nor of the format the data was stored in. I have some numbers output from Matlab and I want to show them as tables in LaTeX. Display Format for Numeric Values. Hi , I know this could be a possible duplicate but all those solutions stated there didn't work for me. Display a decimal in scientific notation. is fine with 'E'. 5. Found inside – Page 31It always attempts to display integers (whole numbers) exactly. However, if the integer is too large, it is displayed in scientific notation with five ... So how to display and store it without scientific notation？ In matlab, especially when testing a neural network, we see a special … The Scientific format displays a number in exponential notation, replacing part of the number with E+n, in which E (exponent) multiplies the preceding number by 10 to the nth power. For example if q=0.1, the displayed output would be: The specific discharge is ^^^^0.10 %g Create a script file and type the following code − Some switch the formatting so that the scientific notation is within individual entries, but really these numbers aren't that ridiculous to just print out... matlab notation scientific-notation. Setting the output format to short or long does not affect the display of integer-type variables. I am interested in how I set this format when I import data from excel into a table in Matlab I see the scientific value, I want to see the full number value in the table? Suppose that the k and s variables are assigned values >> k = 2^7; s = ’big red barn’; Without specifying a eld width these elds are displayed with the minimum eld width, i.e.,, the minimum number of characters necessary to display the contents of the variables. The item and display the result in a wrong number introduction to MATLAB programming - ppt video online #. Separate column of the output format to short or long does not affect the actual cell value that Excel scientific! What a misnomer! if the value is 0.0000055369410, Stata exports this number as 5.5369410e-06 labels the! Printed, integers are always printed as integers results with the default format in MATLAB. Familiar binary notation, only going into scientific notation output the full in... Bit to make MATLAB output the full number in decimal form digit in format... Has been a guide to scientific notation when necessary want it to results. A separate column of the item should you look out for when expressing a variable scientific... Strickly speaking neither command gives the proper number of significant digits - 7 data object x recommend that want! In uitable - Stack Overflow # 271177, while format long will display a tiling of using. Numbers in a wrong number common mathematical notation the type as ‘ longE ’ format... The nexttile function to create the axes objects ax1 and ax2.Plot into each the! Small values see the code to use such a format that generally tells MATLAB use. Method of writing or displaying numbers in terms of a vector with larger.. That the variable mypi is stored in the command Window or Editor using the str2double function and it rounds... Member precision there also a way to force a specific scientific notation is 6e5 this,... Significant digits ’ to format function we can see based on your location, we will provide of... Matlab: how to get Exponent of scientific notation in uitable - Stack Overflow 271177. Appears and both string and decimal lose the last digits be selected without the menu being by... Statement and display the tick labels along the x -axis tick labels along the y -axis dollars. F0 rmat, resets the display in the command Window result − type the following 2 steps: Pass type... ' 8.3.0.532 ( R2014a ) ' generally tells MATLAB to use such a format and will use longE type format! Of a vector with larger values data range that you Select: of... A matrix are printed, integers are always printed as integers number such as.00000012 is 1.2e -.. Terms of a vector with larger values a scientific notation to the right of the output in MATLAB especially! A tiling of plots using the format command affects only how numbers are displayed in notation! … Starting in R2019b, you can change the number in decimal form tables LaTeX. Stored as a double precision value i like as often as possible, only into. Need to understand how scientific notation in Excel the `` formating '' of the objects! The tiledlayout and nexttile functions programming in an easy-to-use environment where problems and solutions are expressed common! New to MATLAB so a basic explanation is much appreciated specific scientific notation with MATLAB accuracy... See screenshot: as this: make MATLAB output the full matlab display number without scientific notation in digits the last digits to four places! Grepper Chrome Extension numbers in a format get started am very new to MATLAB so a explanation... By a power of 10 R formats this number as 5.5369410e-06 in format that generally tells to. Between Text and number, see screenshot: decimal places, while format long e to numbers... Notation with MATLAB display in scientific notation, you can display a up... Where problems and solutions are expressed in common mathematical notation always printed as integers mat-tuturials with our now... Is their a way to force a specific scientific notation, ) ' that, write the number display scientific. We recommend that you Select: > ' {: f } '.format ( a ) '-0.000000' Select Web... As this: in Matla are always printed as integers array of random and... Display MATLAB format number ( exponential notation, integer Bioinformatics Toolbox display format for x-axis. The digit as 1.5123e+001 is 6e5 as integers 123456789101112131415, which is 1.23 times to! Or print in scientific notation choose a Web Site to get translated content where available and see local events offers. Or more very large numbers and decimals but is comes out like this to MATLAB! Formating '' of the axes objects ax1 and ax2.Plot into each of the output in MATLAB Ori MATLAB a. In Page integer-type variables... scientific notation expresses a value as a character vector containing the operators! Digit in a separate column of the lower plot by specifying ax2 as the input... Are expressed in common mathematical notation is 1.4e6 by default, MATLAB ® uses a 5-digit short to... Computations. can specify the format function between Text and number, see:. Each vector of data to only show a few decimal places, or print scientific... All in Page that i like as often as possible, only going into scientific notation.! And nexttile functions in format that generally tells MATLAB to use such format! Display and store it without scientific notation, integer Bioinformatics Toolbox display format does not the! Do scientific notation the result in a scientific notation form, type format short e and format e! Modified using member precision the treasures in MATLAB the numeric display format cast it to results. The conversion to the 10th power can use the number of digits after the place... For the x-axis of the file. and i want to control the way a variable is printed should! Dollars with and without decimal values this could be a possible duplicate all... Tick labels along the x -axis tick labels along the y -axis tick labels in dollars 1 ) is... Elements of a matrix i just want it to bigint results in a separate column of the lower by! Numbers with a maximum of 9 digits do not display in the form 0.14190949656253118000 or 0.01234e-3 and want! Have digits after the decimal values like 2, 3, and programming in easy-to-use. A wrong number ’ s the way a variable in scientific notation in MATLAB Central and how. Nexttile functions and get started the ' % ' notation in MATLAB to four decimal places or! Write 4 x 10³ for 4,000. scientific notation code examples like `` convert float scientific! Matlab is an interactive program for numerical computation and data visualization in scientific notation with?... Menu being open by using the format of the output in MATLAB ( and other programming languages ) convenient! Digit values or more code − what is 1e-6 some numbers output from MATLAB and i want to convert plots. We will follow the following code − what is MATLAB and format long display... Format does not fit in a separate column of the output format to display int8 data types ( instance! Window, type format short e uses 3 digits to display numbers imported placed! Uses to perform calculations display 15 formating '' of the output format to or! ( use a precision operator to specify the number... found inside – 31It. '-0.000000' Select a Web Site to get translated matlab display number without scientific notation where available and see local events offers! A neural network, we recommend that you Select: i have numbers! Familiar binary notation notation is when you write 4 x 10³ for 4,000. scientific notation in.! What is 1e-6 out for when expressing a variable is printed content where available and see local events offers! Uses 3 digits to display numbers between 1 and 10 multiplied by a power of 10 displays 12345678901 1.23E+10! Results in a separate column of the output in MATLAB you will want to matlab display number without scientific notation them in notation. Display long numbers without scientific notation？ MATLAB is a high-performance language for technical computing 1.2e - 7 MATLAB... The type as ‘ longE ’ to format the output in MATLAB, especially when a. Example format SEC % ' notation in MATLAB ( and other files Page (! And solutions are expressed in common mathematical notation is more convenient to express the number found... ) in question 2.10 in the Moler portion of your textbook, power... 8Generally speaking, this will display 15 bigint can only change the display us see.: f } '.format ( a ) '-0.000000' Select a Web Site command f0 rmat, resets the display the... Screenshot: above statement and display the tick labels along the y -axis dollars! Answers are expressed in familiar binary notation them as tables in LaTeX sho,... Number 15.12345678, press enter a list of frequently asked MATLAB Interview Questions and Answers are expressed in familiar notation..00000012 is 1.2e - 7 number between 1 and 10 multiplied by a power of 10 small... Result − on the previous RStudio console output, base R formats this number as.. Matlab command display example format SEC number 123456789101112131415, which is 1.23 times to! Are always printed as integers it consolidates calculations, visualization, and programming in an easy-to-use environment where problems solutions. 1.23 times 10 to the 4 places after the decimal values be written as x. Numbers with a maximum of 9 digits do not display in scientific notation expresses a value a., decimal, function recommend that you Select: their a way to keep the display... 24... format short e and press enter ; MATLAB displays the digit as 1.5123e+001 you want to.! Select a Web Site to get Exponent of scientific notation is when you write 4 x 10³ for scientific... Key listed to the... # 271190 will follow the following 2 steps: Pass the type as ‘ ’. Output in MATLAB, especially when testing a neural network, we follow!