For example if there is a variable foo it will "try" to create the variable foo and loads its value from the MATLAB script. mat file (MATLAB's proprietary tabular format) into the Scilab workspace. The loadmatfile, as far as I have understood, "tries" to load the variables defined in a MATLAB.There is also the execstr function which worth studying. However this function is to be deprecated in favor of evstr. Regarding the technical question I'm not sure what you are trying to achieve here, Scilab/ScicosLab still have the eval function which basically does what you want.:) (more about Scilab and the forks here) Giving the ScocosLab community the credit that the whole Scilab documentation and support is not very good in general. At some point (from Scilab v4) the Scilab team decided to move away from Tcl/tk towards Java, but the SciccosLab/scicos team departed, keep using the language (Tcl) and it's graphical user interface design package (tk). The team behind ScicosLab (INRIA) are the ones who made scocos (now called xcos in Scilab development line). ScicosLab is not a clone of Scilab but a fork of it. "ScicosLab, a (pretty badly designed) clone of Scilab" This in my opinion is an inaccurate way of introducing the software.In this phase I could also use octave (no graphical modelling is involved), although it behaves in the same way.You may also have variable names stored in a string or cell array that you want to instantiate as variables. For example, you may want to attach a time or date stamp to the end of a variable name. There's no way of overriding this behavior if your file is in ascii format Assume that you want to create a variable in Matlab whose name is contingent on factors that are unknown before the program runs.Where what I search for is a builtin read_var_from_name which would allow me to access the internal symbol table by string.ĭo you know if there exist a similar function? In order to to cycle on the data files, I would need to do something like: for i = The problem comes from the fact that loadmatfile("foo", "-ascii") loads the file foo.mat into a variable named foo. Each of them can be loaded using the -ascii flag for the loadmatfile command. The data I need to process is contained into a certain number of text files: Data_005, Data_010, …, Data_100. The documentation on the web is pretty poor, but it's reasonably similar to scilab and octave. The programmer must take care to check the syntax of the input string and visualize how the string will look during run-time in order to avoid errors.I need to load experimental data into scicoslab, a (pretty badly designed) clone fork of scilab which happens to support graphical modeling. Static content is placed inside of quotes, while variable content is outside of quotes and either entered as a variable name or enclosed within a num2str function. Usually, this string is broken up into static and variable content. Notice in both of these examples that the eval function takes one string as an input and evaluates it as if it were a command typed into the command line. A for loop is used to save each value in the variable named in each string. The values that will be saved in the variables are contained inside of a numeric array. However, it is still classified as a string and therfore I cannot use it in my while loop.
This string is actually the name of a variable.
In example 2, the variable names are stored as strings that are contained in a cell array. I am working on a Matlab script and I am running in the following problem: Within a loop, I am creating a string by using strcat. In example 1, the date and time are combined into one string which is appended to the end of a generic variable named data.
#String to variable name matlab how to
In the following examples, we’ll show you how to do these tasks.Įxample 1: Adding the time and date to a variable name > d = datestr(now, 'mmmm_dd_yy_HH_MM_SS') Įxample 2: Creating variables from strings varnames = '= ' num2str(values(k)) ' '])īoth of these examples use the eval function. The best way to accomplish these tasks in Matlab is to use the eval function.
Assume that you want to create a variable in Matlab whose name is contingent on factors that are unknown before the program runs.
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