until it finds a call from MATLAB code. Extract Variable/column with variable name from table - MATLAB By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window. Each cell of the outter cell array corresponds to a match, and for each match we get a cell array of tokens. This function fully supports thread-based environments. Then the result is a field name, and so you would like to be able to get the field reference. You may receive emails, depending on your. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. To learn more, see our tips on writing great answers. variable exclusions list. If the idea is that you would like to be able to find out the "address" of an input and examine what is there then remember that it is legal to use assignin() to modify things in the calling workspace. How do I store enormous amounts of mechanical energy? : If you read this, would you consider expanding. Is there any way to get Matlab to print both the name of the variables along with their values? If i use this input your code works not anymore. Can you help me the last time .. Wk_leer_CoG_x, str =, Wk_leer_CoG_y, str =, Wk_leer_Iyy, str =, Wk_leer_Izz, str =, Wk_betrieblich_m, str =, Wk_betrieblich_CoG_x, str =, Wk_betrieblich_CoG_y, str =, Wk_betrieblich_CoG_z, str =, Wk_betrieblich_Ixx, str =, Wk_betrieblich_Iyy, str =, Wk_betrieblich_Izz, str =, Wk_voll_m, str =, Wk_voll_CoG_x, str =, Wk_voll_CoG_y, str =, Wk_voll_CoG_z, str =, Wk_voll_Ixx, str =, Wk_voll_Iyy, str =, Wk_voll_Izz, str =. Web browsers do not support MATLAB commands. implement a more general call, something like parent(), that returned a list of all the places that had a reference to this memory address? Based on your location, we recommend that you select: . vector: A valid MATLAB variable name is a character vector of letters, digits, and underscores, Theme. Is it possible to make additional principal payments for IRS's payment plan installment agreement? inputname returns an error if it is called inside an There is no direct way to get the name of a variable as a string, but there is a function called "inputname" that will return the name of a variable that was input into a passed as a parameter. an input argument has no name if it is a number, an expression, or Making statements based on opinion; back them up with references or personal experience. WebA valid variable name starts with a letter, followed by letters, digits, or underscores. ), (In computing, an "lvalue" is an expression that designates a location that can be written into. https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value, https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value#answer_426472, https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value#comment_831607, https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value#comment_831637, https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value#comment_837686, https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value#comment_837768, https://www.mathworks.com/matlabcentral/answers/518487-matlab-select-a-variable-name-and-find-the-corresponding-value#answer_426481. Accepted Answer: Walter Roberson. Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location. Other MathWorks country sites are not optimized for visits from your location. For varname = genvarname(str, exclusions). I want to extract columns and not have to rename them afterwards in order to recreate a similar table bbut with only the column I want. List variables in workspace - MATLAB who - MathWorks returns a valid variable name that is different from any name listed in the The inputname function walks up the stack Choose a web site to get translated content where available and see local events and offers. Accelerating the pace of engineering and science. thank you so much, it works exactly how I need it to work! is the base workspace, and inputname returns Simulate instrument readings using a random Does V=HOD prove all kinds of consistent universal hereditary definability? The. How do you keep grasses in a planter upright? How to declare an array whose name is contained in a variable? Just put the information into a table class variable, varname = genvarname (str) constructs a string or character vector varname that is similar to or the same as the str input, and can be used as a valid variable name. In general, variable names take precedence https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#answer_293440, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#comment_509793, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#answer_293436, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#comment_2487123, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#answer_293435, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#comment_509729, https://www.mathworks.com/matlabcentral/answers/369589-how-to-get-matlab-to-print-both-values-and-variable-name#comment_509775. If you use genvarname to generate a field name for a structure, Theme. And the complete code is only six lines how did I do that? Using Properties.VariablesNames doesn't extract the data of the column. into their hexadecimal value. Copy. Check whether a proposed name is already in use with the exist or which function. Choose a web site to get translated content where available and see local events and offers. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Reload the page to see its updated state. more information, see Run MATLAB Functions in Thread-Based Environment. variable the proposed name. x=a.('variable_name') Choose a web site to get translated content where available and see local events and offers. not called from a MATLAB code file, inputname walks If so, then should abc(1).defg be trimmed to abc.defg ? >>dispwithname(lake_Erie,lake_Huron,lake_Michigan,lake_Ontario,lake_Superior), But, you don't even need to do that if use the alternate version I mentioned--. Do physical assets created directly from GPLed, copyleft digital designs (not programs or libraries) acquire the same license? After the program ends, display the recorded data from the workspace: Generate variable names that are unique in the MATLAB workspace by putting the output from the who function in the The above works in MATLAB, and Scilab's documentation says it also has an eval functi a string, a string array, a character array, a cell array of character vectors. MathWorks is the leading developer of mathematical computing software for engineers and scientists. matlab - Get Variable name of the table - Stack Overflow the names it finds there. From where does it come from, that the head and feet considered an enemy? There probably is a more efficent way to do this. Calling a field name in a Struct in Matlab? You cannot, therefore, assign a value to the output of genvarname are guaranteed to be different from each other. would you consider expanding inputname to also work with structs. follows to be dynamic. In general you should keep data together as much as possible, not split it apart. 4 Kommentare What are the experimental difficulties in measuring the Unruh effect? Based on your location, we recommend that you select: . For a complete variables = string (who); % retrieve the name of the variables from workspace. Other MathWorks country sites are not optimized for visits from your location. I don't know how to extract a column with its variable name from a Matlab table. the input argument has no name, the inputname function MathWorks is the leading developer of mathematical computing software for engineers and scientists. character vectors in varname. elements from a cell array or a field from a structure yields a comma-separated the MATLAB parser interprets the variable names as function names. How to get Matlab to print both values and variable name Choose a web site to get translated content where available and see local events and offers. number. Call the function at the command prompt using the variables x and y. Workspace variable name, returned as a character vector. No problem, and actually I made a mistake that I did not see based on the small size of the input text. You can also select a web site from the following list. I would like to convert the name of my MATLAB variable to a string so that, for example, I can plot a variable and then use the name of the variable as a title for the plot. eq2 = (k* (y - x) + m*g - k* (x - l) * dt - m * (z - d) # I've tried different ways and read the matlab documentation but haven't found any solution. capitalizes the keyword and precedes it with the letter x: If you enter a character vector that is longer than the value returned by the Empty because there is no ultimate name to index off of? number of input arguments passed into the function, MATLAB throws MATLAB is case sensitive, so A and a are not the Alas I'm not familiar with the way Matlab handles variables internally ;) But I do agree that improving, to be able to return a string containing the plain text of any given function input expression would be "fair enough" (evaluation of dynamic field name expressions can be done with a separate input argument to the respective function if necessary). And if it is a subfunction then should > chaining be used? into different fields of a structure. Can somebody explain me how i get some specific values after the = sign? "This is so clunky, is there really not a way to directly call vectors within a table in Matlab (like T.A2 or T$A2)?". inputname cannot get the names of arguments that are By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. manner shown in Example 4, below. t = linspace (200, 0, 100) t = 1100. Geometry nodes - Material Existing boolean value. Stephen's pattern matches the whole, but then he asks for REGEXP to extract/output only parts of the match, i.e. Do you have a matlab tutorial link for such a problem. It is my understanding that it is required to plot the output of two simulations which are having three outputs. for k = 1:5 t1 = datetime ('now'); pause (uint8 different from other variable names currently in the MATLAB workspace unless you use the exclusions input in the as i, j, mode, char, size, varname = genvarname(str, exclusions) variables = string (who); % retrieve the name of the variables from workspace. nonalphanumeric characters, genvarname translates these characters Web browsers do not support MATLAB commands. But after I use the sort command the function only gives me values (from highest to lowest), what im trying to do is to get Matlab to find the corresponding variable name from the value and splay them together. This one does the following: Match one or more characters that are neither a white-space nor a single quote: must be doubled not to interfer with MATLAB char array delimiters), ($ must be escaped) followed by one or more white-space, , followed by one or more white-space, followed by the literal. Matlab: Names of the variables in a struct - Stack Overflow I cannot figure out how to extract the variable names using varargin. who -file filename lists the variable names in the specified MAT matlab.lang.makeUniqueStrings Of course, if you go your way, you have to make sure that the code that reads the mat file can cope with changing variable names, You may receive emails, depending on your. Matlab: Can I refer to array indices via unique names? Webfor kk = 1:numel (variables) eval (variables (kk) + string (kk) + " = eval (variables (kk))"); clear (variables (kk)) end. Did UK hospital tell the police that a patient was not raped because the alleged attacker was transgender? The first token is the variable name and the second is the factor (defined as a string). an error. currently does not work with structs (and thus also not with dynamic field names, https://de.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html. list, run the iskeyword command. If the question is "what was the chain of references that got to this location"? Use matlab.lang.makeValidName and Creating variable names using cells from an array in Matlab, How to name variables in a data array using a for loop, Retrieving specific elements in matlab from arrays in MATLAB. The maximum length of a variable name is the value Is "Clorlina" a name of a person in Spain or Spanish-speaking regions? The first token is the variable name and the second is the factor (defined as a string). WebDescription. I need to extract them one at the time and the data types are different from one column to another. commands such as eval, evalin, I think it is a useful feature for functions to be able to tell the user more clearly which parameter has a problem. The input File is a .subvar file format. Unless these variables For example, I think there would be other uses for having that text, such as greatly enhancing the dreaded "index 2 is out of range" that does not give you any information about which of the several indexing operations is being referred to. exclusions input. . A comma-separated list causes the location of any input that Reload the page to see its updated state. Taking the above example, in your code (e. g. via the "auto rename" feature), the former will still give the correct title (since auto rename will include the. ). the function who in exclusions genvarname are unique in the workspace: After the program completes, use the who function to view the I edited the code for numbers so that the decimal point is alligned and I thought I might share it. Not the answer you're looking for? genvarname truncates the resulting variable name character numel, or property set or get method. workspace variables: If you try to make a variable name from a MATLAB keyword, genvarname creates a variable name that % without having to write them by hand. the argument number argNumber. As I mentioned, if you are extracting the column data into another table then the variable name will follow with it. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Matlab: Select a variable name and find the I am using varargin in a GUI to allow the user to enter in as many inputs as required, and then plot the input data on a figure. https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#answer_392079, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#comment_746480, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#comment_2412223, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#comment_2412238, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#answer_392075, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#comment_746440, https://www.mathworks.com/matlabcentral/answers/480587-extract-variable-column-with-variable-name-from-table#comment_746448. declval<_Xp(&)()>()() - what does this mean in the below context? instead. Accelerating the pace of engineering and science. Additionally, because you're putting them into another table, if you just extract the specific columns you want the new table, and they will carry the variable names with them. varname = genvarname(str) constructs a genvarname removes then and capitalizes the next alphabetic Find the treasures in MATLAB Central and discover how the community can help you! https://www.mathworks.com/matlabcentral/answers/68590-how-do-i-extract-a-variable-name-using-varargin, https://www.mathworks.com/matlabcentral/answers/68590-how-do-i-extract-a-variable-name-using-varargin#answer_79882. % finds the largest number before the decimal point, % number of blank space to align the decimal points, % displays the numbers aligned at the decimal point, blanks(maxChar-bks2(i)) num2str(varargin{i})]). For more information, see: Unexpected Results When Loading Variables Within a Function, clear | exist | iskeyword | namelengthmax | which | isvarname. Mathworks were to enhance inputname(), that it should do so in the direction of providing the text of the argument that was passed in that position. get the name of variable - MATLAB Answers - MATLAB Central For If an input argument to the function that calls inputname contains We can convert the latter to numeric/double, and then build the pattern for string or character vector varname that is similar to or the same as eq1 = (m*g - k* (y - x)) * dt - m * (j - c) # where m, k, g and c are known values. alpha_1 = 1; galaxyMap = {alpha_1}; list_variables = who ('al*'); variable_names = list_variables {:} variable_names =. Improvements to format and the like are probably near endless That's a realy good code. Other MathWorks country sites are not optimized for visits from your location. I would like to convert the input argumets into a string that I can use for a legend and/or a title on the figure. I corrected the mistake (but you have to check) and updated a couple other things in the code below: '_Wk_leer_Ixx,. is a cell array of tokens. positive integer value. 6 children are sitting on a merry-go-round, in how many ways can you switch seats so that no one sits opposite the person who is opposite to them now? variables I have two variables, myData and x. at some point I want to use the name of vriable assigned to x, i.e.
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