It output that there is a lot of effort involved in extracting the appropriate values and it still isn't particularly robust keys badly specified inputs. Are there any helper functions that come with MATLAB to assist? I prefer using structures for my options. This gives you an easy way to store the options and an easy keys to define them. Also, the whole thing becomes rather compact. InputParser function with this. Matlab Parse Function Inputs for more information. I optional yack for hours about this, but still don't have a good gestalt view of general Matlab signature handling. But here's a couple pieces of advice. First, take a laissez optional approach to validating input types. If you really want strong type testing, you want a static language like Java. Try to enforce type safety every where in Matlab, and you'll end up with a good part of your LOC and execution time devoted to run time type tests and coercion in userland, which trades in a lot of the power and matlab speed matlab Matlab. I learned this the hard way. Keys API signatures functions intended to output called from other matlab, instead of from the command linesconsider using a single Args argument instead of varargin. Then it can be passed around between multiple arguments without having to convert it to and from a comma-separated list for varargin signatures. Structs, like Jonas says, are very convenient. Have it accept the default value list in a data structure that's convenient to write out, and your arg-parsing calls will look sort of like function keys declarations, which helps readability, and avoid copy-and-paste boilerplate code. Function could matlab it out and replace it with inputParser, your own optional conventions, etc. I think the n-by-2 cell convention makes for nicely readable source code; consider keeping that. Structs are typically more convenient to deal with in the receiving code, but the n-by-2 cells are more convenient to construct using expressions and literals. Structs require the ", Read Matlab informative post on this issue. Don't forget to read the comments section They all work, so optional a prefered method is optional a matter of personal taste and maintainability. Personally I use a custom optional derived from a private method used by many Keys Toolbox functions like kmeans, pca, svmtrain, output, Being an internal utility function, it changed and was renamed many times over the releases. Depending on your Keys version, try looking for one of the following files:. As with any undocumented function, there output no guarantees and it could be removed from MATLAB in subsequent releases without any notice Anyways, I believe someone posted an old version of it as getargs on the File Exchange. It returns the parsed parameters as separate output variables. Here is the function description:. Optional others have mentioned, the officially recommended approach to function functions inputs is to use inputParser class. This way I can simulate the 'option', value pair that's nearly identical function how most Matlab functions output their arguments. This does of course not check keys correct assignments, but it's simple and any useless variable will be ignored anyway. It also only works for numerics, strings and arrays, but not for matrices, cells or structures. I ended up writing this today, and then found matlab mentions. Mine uses struct's and struct 'overlays' for options. It essentially mirrors the functionality of setstructfields except that new parameters can not be added. It also has an option for recursing, whereas setstructfields does it automatically. I function made a function based on Jonas and Richie Cotton. It implements both functionalities flexible arguments or restricted, meaning that only variables existing function the defaults are allowedand a few other things like syntactic sugar and matlab checks. Also available as a Gist. And for those interested function having real named arguments with a syntax similar to Python, eg: Also as a bonus, if you don't want to always have to type argstruct. It is stable, easy to use and has been included in various matlab frameworks. Don't keys anything about performance optional — might be that there are faster implementations. There is a nifty function called parsepvpairs that takes care of this nicely, provided you have access to MATLAB's finance toolbox. It takes three arguments, expected field names, default field values, and the actual arguments received. For example, here's a function that creates an Keys figure in MATLAB and can take the optional field value pairs named 'url', 'html', and 'title'. By posting your answer, you agree to the privacy policy and terms of service. Stack Overflow Questions Developer Jobs Output beta Tags Users. Sign up or log in to customize your list. Tour Start here for a quick overview of optional site Help Center Matlab answers to any questions you might have Meta Discuss the workings and policies of this function About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us. Log In Sign Up. Join the Stack Overflow Community. Stack Overflow is a community of 7. Join them; it only takes a minute: Amro k 19 Richie Cotton 65k 21 Robert Cain 15 5. I may have to start using that trick. This structure idea looks like it tidies things nicely. Matthew Simoneau 3, function 27 This is probably the output built-in way of dealing with thing. I'm rather taken with Jonas's idea of options structs though, but this is a close second. This is a better answer since it conforms to mathworks' own style and best practices. Here's what the parsing calls could look like. Some good advice here. I agree that all this boilerplate code should be hidden away in a function, and you're probably right about not getting too control freaky with the output checking. Yair Function 5, 21 Depending on your MATLAB version, try looking for one of the following files: Here is the function description: N outputs assigned in the same order as the names in PNAMES. Very interesting, and in fact, quite similar to the solution I just rolled myself. I'm a bigger fan of home-grown boiler plate matlab like this: Hope that helps, Will. JudoWill 3, 1 20 Here's the solution I'm trialling, based upon Jonas' idea. Thank's your solution is also very interesting but it's kind of different from Jonas's: There's no better code, it's just that I think it's important to optional this difference. Inspired by Jonas' answer, but more compact: Jotaf 1 3. Tobias Kienzler 8, 12 64 As an aside, I was able to develop output basic output for conducting full-factorial experiments with given overlay options: After we will simply overwrite the defaults with the user specified values. With this we can allow only a restricted range of arguments by specifying in the defaults. And you can easily define default values. Sign up or log in StackExchange. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Stack Overflow works best with JavaScript enabled. Hope that helps, Will share improve this answer. B share improve this keys. P share improve this answer.
Input and output commands in MATLAB
Input and output commands in MATLAB
4 thoughts on “Matlab optional output in function keys”
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