![]() Rather than displaying the figures in the MATLAB GUI. ![]() Your script should save the image files to the ‘results’ directory If there is no MATLAB function to perform a task, a user can write a user-defined function, which can be called from various programs just like any other. Write a script called process_all which loops over all of theĭata files, and calls the function analyze_dataset for each file % % Example: % analyze_dataset('data/inflammation-01.csv', 0) % Generate string for image name: img_name = replace ( file_name, '.csv', '.png' ) img_name = replace ( img_name, 'data', 'results' ) patient_data = csvread ( file_name ) if plot_switch = 1 figure ( 'visible', 'off' ) else figure ( 'visible', 'on' ) end subplot ( 2, 2, 1 ) plot ( mean ( patient_data, 1 )) ylabel ( 'average' ) subplot ( 2, 2, 2 ) plot ( max ( patient_data, , 1 )) ylabel ( 'max' ) subplot ( 2, 2, 3 ) plot ( min ( patient_data, , 1 )) ylabel ( 'min' ) if plot_switch = 1 print ( img_name, '-dpng' ) close () end end Automate the analysis for all files % Display plots in GUI using plot_switch = 0, % or save to disk using plot_switch = 1. % Create figures to show average, max and min inflammation. The general form of a function is shown in the pseudo-code below:įunction analyze_dataset ( file_name, plot_switch ) %ANALYZE_DATASET Perform analysis for named data file. You can create handles either for anonymous functions or for functions in program files. exist (MATLAB Functions) Check if variables or functions are defined. The keyword end marks the end of the function body, and theįunction won’t know about any code after end.Ī function can have multiple input and output parameters if required,īut isn’t required to have any of either. For example, if we have created a MATLAB. ![]() That has a single input parameter, ftemp,Īnything following the function definition line is called the body of theįunction. The first line of our function is called the function definition,Īnd it declares that we’re writing a function named fahr_to_kelvin, Remember to save your m-files in the current directory. So, you will need to save the above code in a file called The name must start with a letter and cannot contain spaces. The name of that file must be the same as the function defined functiondrives (driver,drive) DRIVES Adds drives between the name of drive and driver. Here are a few MATLAB examples showing how to use functions: Example 1: Matlab. The function’s input arguments are called input parameters. Create a function file, named mymax. Open Matlab and click New and then Function and write a description of what the function should do. In particular we will write a function that calculates the value of a European put and call option using the Black-Scholes-Merton pricing formula. Function ktemp = fahr_to_kelvin ( ftemp ) %FAHR_TO_KELVIN Convert Fahrenheit to Kelvin ktemp = (( ftemp - 32 ) * ( 5 / 9 )) + 273.15 endĪ MATLAB function must be saved in a text file with a. function name specifies the function’s name. In this section we show you how to write and call a function in Matlab.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |