while loop in matlab with two conditions

while (user_input ~= 256 & user_input ~= 128 & user_input ~= 64) prompt = 'Please enter one of the listed gray levels (256, 128, 64, 32, 16, 8, 4, 2). on its own), stop execution of the loop by pressing All I'm trying to do is create a prompt to ask the user if today is their birthday and if they say yes it'll wish them happy birthday and if they say no it'll say "that's too bad". Repeat Statements Until Expression Is False, Run MATLAB Functions in Thread-Based Environment, Array Comparison with Relational Operators, Fundamentals of Programming (MathWorks Teaching Resources). Loops in MATLAB FOR Loop. EP3: 21.4660 create compound expressions. Anom Sulardi on 17 Jun 2020 while (testPerformance > 9 && valperformance >9) end % other code.. end Sign in to comment. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Ubuntu won't accept my choice of password. of & and | within the expression. What were the most popular text editors for MS-DOS in the 1980s? MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. Sebastian Arteaga on 9 Nov 2021 Is it safe to publish research papers in cooperation with Russian academics? OR. model.Po = model.Po + round(dPo*(randn/2)); model.SIG2 = model.SIG2 + dSIG2*(randn/2); model.SIG3 = model.SIG3 + dSIG3*(randn/2); How is this supposed to work? Other MathWorks country sites are not optimized for visits from your location. while Thanks for contributing an answer to Stack Overflow! When nesting a number of while statements, How to make two conditions for a while loop?. What risks are you taking when "signing in with Google"? Accelerating the pace of engineering and science. I don't see where anything is done with the intermediate parameter values. as short-circuit operators. Share. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. from left to right, adhering to operator precedence rules. while (testPerformance > 9 & valperformance >9) ii = ii+1; in MATLAB? What is loop in MATLAB? end. MathWorks is the leading developer of mathematical computing software for engineers and scientists. in the any function. I want the loop try to run and increase the resolution_check and decrease the mX_check to those levels as long as Nx is less than 5000. and repeats the execution of a group of statements in a loop while You need the == equals. Reload the page to see its updated state. I can make the prompts appear but what I want to do is unless the user inputs 'yes' or 'no' they will continually be asked if today is their birthday. dowhile loop above by using a MATLAB sub expressions to hold true for the loop to continue: ((Ea0 >= 0.01) || (Ea1 >= 0.01)) && (Sr >= 10^-4), Note the extra parens around the EaX expressions to specify that both must fail for the loop to end. Nitro 911 cdc 1999. I would like to stop the iteration when these 2 conditions are met. When nesting a number of while statements, each while statement requires an end keyword. Otherwise, I'm trying to make a basic while loop to get back into the swing of things with matlab. I'm making an application for L'hopitals rule so I need a while loop whenever the limit of f(x) and g(x) are both 0. example. Other MathWorks country mX_check<=0.1 to be true at the same time in order to break out of the loop, plus you want to break out regardless of those values if Nx ever gets more than 5000, you need to do it this way: (resolution_check < 8 || mX_check > 0.1) && Nx<5000, Now it will break if Nx ever meets or exceeds 5000, regardless of the values of resolution_check < 8 and mX_check. sites are not optimized for visits from your location. For a, (resolution_check<8 | mX_check>0.1) & Nx<5000, convergence parameter being out of range while the number of iterations is under the limit cause the loop to continue. operators (such as &&, ||, And you have && so if any one of those is not true, the loop will quit. Skip blank lines and comments using a continue statement. Assuming it is 310, which is the only way the loop will execute at all, when I run this I find that the loop usually iterates once - but sometimes more than once - and the values stored in the model struct do seem to get updated correctly. The code is given below. Otherwise, So mX_check. Learn more about while loop, conditional statement, logical operators MATLAB. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? If it fits, a message appears. Can anyone give me an example on how to make multiple conditions in a while loop? thank u for ur reply but i'm confused! short-circuit in conditional expressions and statements, it is good is true. MATLAB evaluates compound expressions If you inadvertently create an infinite loop (that is, a loop that never ends Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? What is this brick with a round back and a stud on the side used for? The first part of the expression evaluates to false. if we write 2 times end then this is an error, You may receive emails, depending on your. (testPerformance > 9 && valperformance >9), I think this will keep repeating the loop not stopping it. Tags while loop; offers. result in an undefined function error. not need to evaluate the second part of the expression, which would Hi there I am trying to impose a while loop with two conditions; Theme Copy while (L2normpercentold>=tol)&& (any (Diffpart1>0.0001)) However I get the following error; ??? operators (such as &&, ||, MathWorks is the leading developer of mathematical computing software for engineers and scientists. Choose a web site to get translated content where available and see local events and Matlab offers the following kinds of loops that handle the requirement of looping a statement. Based on your location, we recommend that you select: . Ctrl+C. Based on your location, we recommend that you select: . Other MathWorks country Accelerating the pace of engineering and science. respectively. while evaluates the conditional expression at the Unable to complete the action because of changes made to the page. The function simply perturbs the parameter values until they walk outside the boundaries. How would I do that? Asking for help, clarification, or responding to other answers. Choose a web site to get translated content where available and see local events and offers. end evaluates an expression, Please point out the error as i need to update all the parameters each time within the given boundation untill . Not the answer you're looking for? Thank you for your help. https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop, https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop#answer_61883, https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop#answer_168022, https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop#comment_266170, https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop#comment_445684, https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop#comment_901350, https://www.mathworks.com/matlabcentral/answers/50713-how-to-make-two-conditions-for-a-while-loop#answer_827899. If the conditional expression evaluates to a matrix, MATLAB evaluates sub expression to end the loop, replace '|| again by &&. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. beginning of the loop rather than the Find the treasures in MATLAB Central and discover how the community can help you! Reload the page to see its updated state. I'm making an application for L'hopitals rule so I need a while loop whenever the limit of f(x) and g(x) are both 0. - well that's just not true. more information, see Run MATLAB Functions in Thread-Based Environment. Find centralized, trusted content and collaborate around the technologies you use most. Count the number of lines of code in the file magic.m. You can use it for multiple conditions in your while loop. My guess is that this loop shouldn't even be part of this function, but part of the calling scope instead, but that's just a wild guess. while expression, statements, If you inadvertently create an infinite loop (that is, a loop that never ends So if the resolution condition + mX condition met before Nx reaches 5000 => break. Find the treasures in MATLAB Central and discover how the community can help you! in MATLAB? When nesting a number of while statements, the instructions in the loop and begin the next iteration, use a continue statement. or ~). while Has the Melford Hall manuscript poem "Whoso terms love a fire" been attributed to any poetDonne, Roe, or other? Asking for help, clarification, or responding to other answers. Can I use my Coinbase address to receive bitcoin? Unable to complete the action because of changes made to the page. Unable to complete the action because of changes made to the page. as short-circuit operators. As IA notes, then you need a compound expression which apparently is where you're having syntax issues. Hello, I am trying to set a while loop but I am having hard time to make it work the way I wanted to work. Theme. To execute statements if any element is true, wrap the expression Let me tell you what happens during the loop. Error 1: You wrote Ea0 two times, but surely meant to write Ea1 in the second sub expression. Choose a web site to get translated content where available and see local events and By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Otherwise, the expression is false. Improve this answer. tar command with and without --absolute-names option. condition of while to true and place the practice to use && and || instead if Nx reaches 5000 loop breaks no matter what resolution or mX are. short-circuit in conditional expressions and statements, it is good Other MathWorks country Con I do condition OR condition in a while loop? What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Unable to complete the action because of changes made to the page. Ubuntu studio 11 10 xfce desktop. So if resolution_check >= 8 or mX_check <= 0.1 then the condition is not true and it will break immediately. This behavior is the same as && and ||, And you have && so if any one of those is not true, the loop will quit. To learn more, see our tips on writing great answers. And you have && so if any one of those is not true, the loop will quit. An expression can include relational operators The MATLAB Vous avez cliqu sur un lien qui correspond cette commande MATLAB: Pour excuter la commande, saisissez-la dans la fentre de commande de MATLAB. To skip the rest of R : How to fix a while loop with multiple conditions returning an errorTo Access My Live Chat Page, On Google, Search for "hows tech developer connect"I prom. while (testPerformance > 9 & valperformance >9) ii = ii+1; in MATLAB? You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. An expression is true when its result is nonempty Since && and || consistently In order to compare multiple strings at once, you can use strcmp with the answer provided by the user and use a cell array containing the strings you are looking for (i.e. while loop is similar to a dowhile loop An expression can include relational operators Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? The loop will continue if the condition is met, and break if the condition (s) is not met. while expression, statements, When a gnoll vampire assumes its hyena form, do its HP change? Accelerating the pace of engineering and science. conditional expression inside the loop. An expression is true when its result is nonempty and contains only nonzero elements (logical or real numeric). return | continue | break | for | end | if | switch | Short-Circuit What should I follow, if two altimeters show different altitudes? An other way to go, proposed by Luis Mendo, is to use any. Use a while loop in which you put the prompt (here I use inputdlg) and once the user enters the answer, you check if the string entered compares to either yes, Yes, no and No. result in an undefined function error. how is while ((Ea0 >= 0.01) vertical slash vertical slash (Ea1 >= 0.01)) && (Sr >= 10^-4) equal to (Ea0 >= 0.01)&&(Ea1 >= 0.01)" or "(Sr >= 10^-4) ".

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