Matlab input

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Matlab input

Sorry for the delay in postings, but many of us are in the state of transition, whether its school, weddings or work. While you will often need to display information to the user, you will have to request data from them as well. There are several options available to you, and we will run through many of them here. Take the example of a program where you are evaluating the body mass index BMI of an individual.

While this is certainly a viable solution, often the user will not explicitly provide the weight and height into the argument fields. These lines will be added after the comments and before the bmi calculation.

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Now if the user runs the following commands at the command prompt, they will be queried as follows:. Then include the following at the end of your script instead:. Another method to gather user information, is through the use of a input dialog box, and the command inputdlg:. This will create the following dialog box which allows the user to enter information as needed:.

There are several other dialog box options that you can use which we will not cover in depth here. Finally, sometimes you require the user to select a certain portion of a graph to be analyzed further. As a word of caution. If you need precise locations, be sure to zoom in on data and select appropriately, otherwise you will just select any coordinate on the graph. Also, be aware of the axes. In order to determine the actual x value, you can run. This is because I might not have clicked exactly on the curve!

So be careful in your graphical inputs. So great to find someone with a few unique thoughts on this issue. Appreciation to my father who told me regarding this webpage, this webpage is really awesome. Thanks in favor of sharing such a pleasant idea, piece of writing is fastidious, thats why i have read it entirely.

matlab input

Just search in google:. Is there a specific code or does it involve loops? Write a programme that text input until user presses enter key. Once user presses enter key after typing some text, it shows the total number of characters including spaces ,words and sentences entered by the user.

I try run the matlab coding for box. After I fill all the data, and click ok, why it did not display the result for my BMI. It was very interesting codding. Then it will output. Request the user to enter a function 2.

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Request the user to enter the minimum and maximum values the function can take the function domain 3. Request the user to enter the number of points 4.A vector is a one-dimensional array and a matrix is a two-dimensional array. We have already discussed vectors and matrices.

In this chapter, we will discuss multidimensional arrays. However, before that, let us discuss some special types of arrays. In this section, we will discuss some functions that create some special arrays. For all these functions, a single argument creates a square array, double arguments create rectangular array.

A magic square is a square that produces the same sum, when its elements are added row-wise, column-wise or diagonally. The magic function creates a magic square array.

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It takes a singular argument that gives the size of the square. The argument must be a scalar greater than or equal to 3. Generally to generate a multidimensional array, we first create a two-dimensional array and extend it. We can also use the cat function to build multidimensional arrays. Cell arrays are arrays of indexed cells where each cell can store an array of a different dimensions and data types.

matlab input

The cell function is used for creating a cell array. Previous Page. Next Page. Live Demo. Previous Page Print Page.The input function allows you to ask a user to type some sort of information into the program and to save that information into a variable that the program can process.

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The input function is used to ask the user of the program not the programmer a question, and then wait for a typed response. The typed number is then returned as the result of the function, and should usually be stored in a variable:. By default, the input function expects to read a number, and if the user types: hello it will assume that hello is a variable containing a number.

If you really want the string "hello" then you would have to type 'hello' tick marks. To tell a Matlab program to read a string of characters directly with out having to type the tick marks, you must use the 's' syntax as shown here:. The input function is similar but more user friendly than the scanf function in C. Thus, in C, if you wish to receive input from the user of the program, you must use the scanf or fgets function.

Sometimes you will have the situation where you need to ask the user for input, but the question that you want to ask needs to be built from data already stored in a variable. For example: The program has a variable called balance and the question you want to ask is: "You have 'balance' dollars in your bank account, how much would you like to withdraw? What you can do is combine the two. By using a fprintf first, you can get any formatted output string you want. Input function The input function allows you to ask a user to type some sort of information into the program and to save that information into a variable that the program can process.

The Input Function The input function is used to ask the user of the program not the programmer a question, and then wait for a typed response. Asking for input using a complex string Sometimes you will have the situation where you need to ask the user for input, but the question that you want to ask needs to be built from data already stored in a variable.Documentation Help Center.

The inputParser object enables you to manage inputs to a function by creating an input parser scheme. To check the input, you can define validation functions for required arguments, optional arguments, and name-value pair arguments. Optionally, you can set properties to adjust the parsing behavior, such as handling case sensitivity, structure array inputs, and inputs that are not in the input parser scheme. After defining your input parser scheme, call the parse function.

The inputParser stores information about inputs. Indicator to match case when checking argument names, specified as false or true or 0 or 1. By default, argument name matches are not case sensitive. For example, 'a' matches 'A'. For case-sensitive matches, set CaseSensitive to true or 1. Name of the function to display in error messages, specified as a character vector or string scalar. By default, FunctionName is an empty character vector ''. Typically, you set FunctionName to the name of the function you are validating.

Then, if the parse function encounters invalid input arguments, it reports the error using the function name. Matching indicator to throw error when an input is not found in the input parser scheme, specified as false or true or 0 or 1.

By default, the parse function throws an error if an input argument name does not match one defined in the input parser scheme.

matlab input

To suppress the error and store the input argument name and value, set KeepUnmatched to true or 1. The inputParser stores unmatched input argument names and values in the Unmatched property.

Partial matching indicator for accepting partially matched input names as valid, specified as true or false or 1 or 0. By default, input parameter names that are leading substrings of parameter names in the input parser scheme are valid and the input value is matched to that parameter.

To require input parameter names to match a name in the input parser scheme exactly, respecting the CaseSensitive property, set PartialMatching to false or 0.

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Partial matching is supported only by arguments that you add to the input parser scheme using the addParameter function.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

I would like to take an input from the user and make this input a file name which I will be writing on my code after taking the input.

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Learn more. How to make an input a file name? Ask Question. Asked 6 years ago. Active 6 years ago. Viewed times. I would be appreciated if you could help me on this. Thanks in advance! Jonathon Reinhart k 26 26 gold badges silver badges bronze badges. You should add a tag for the programming language you are writing your code in, please. It's generally not a good idea to ask for code without giving what you have so far.

Active Oldest Votes. Jonathon Reinhart Jonathon Reinhart k 26 26 gold badges silver badges bronze badges. Ol'Reliable I don't. I'll just keep trying languages until I find one he likes, I suppose Don't you think it would have been nice to mention that?! Where'd be the fun in that?

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Featured on Meta. Community and Moderator guidelines for escalating issues via new response….Documentation Help Center. If the user presses the Return key without entering anything, then input returns an empty matrix.

The input function also accepts expressions. For example, rerun the code. The input function returns the text exactly as typed. If the input is empty, this code assigns a default value, 'Y'to str. Result calculated from input, returned as an array. The type and dimensions of the array depend upon the response to the prompt. The Workspace browser does not refresh while input is waiting for a response from the user.

Therefore, if you run input within a script, the Workspace browser does not display changes made to variables in the workspace until the script finishes running.

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Toggle Main Navigation. Search Support Support MathWorks. Search MathWorks. Off-Canvas Navigation Menu Toggle. Trials Trials Aggiornamenti del prodotto Aggiornamenti del prodotto. Examples collapse all Request Numeric Input or Expression.

Request a numeric input, and then multiply the input by Request Unprocessed Text Input. Request a simple text response that requires no evaluation. Input Arguments collapse all prompt — Text displayed to user character vector. Text displayed to the user, specified as a character vector. Output Arguments collapse all x — Result calculated from input array.

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Exact text of the input, returned as a character vector. Algorithms The Workspace browser does not refresh while input is waiting for a response from the user. See Also ginput inputdlg keyboard menu uicontrol. Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site.Documentation Help Center. This example shows how to define a function that accepts a variable number of input arguments using varargin. The varargin argument is a cell array that contains the function inputs, where each input is in its own cell.

Create a function in a file named plotWithTitle. If the function receives an odd number of inputs, it assumes that the last input is a title.

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Call plotWithTitle with two sets of xy inputs and a title. You can use varargin alone in an input argument list, or at the end of the list of inputs, such as. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:.

Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location. Toggle Main Navigation. Search Support Support MathWorks. Search MathWorks. Off-Canvas Navigation Menu Toggle.

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Support Variable Number of Inputs This example shows how to define a function that accepts a variable number of input arguments using varargin. Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site.


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