Is there a way to find if a variable exists inside a MAT file? I have saved several MAT files and in a different script I want to find out if those MAT files have a certain variable in them and if they do I want to load them....
%disp(testresults); %can't work because variable testresults does not %exist. testresults = magic(5) %create variable exist testresults; %returns "1", variable exists if (exist testresults var) %why can't I check if this exists? %File: temp.m Line: 6 Column: 11 ...
Check if variable exists in workspace to plot... Learn more about gui, error, check variable, exist, workspace, errordlg, if statement MATLAB
MATLAB Online에서 열기 Dear all, Simple question about checking if a variable exists. I want my function to check if a given parameter exists in the workspace before attempting to modify it. If it doesn't exist, my function should behave differently. ...
There is no MATLAB function that examines every level of a structure of structures, or nested structure, to determine if a field exists. The 'isfield' function examines only the top level of a nested structure. To determine if a field exists at any other level, ...
but some parameters will make an object(in fact, it is formmesh) disappear, and some parameters will not. Therefore, I need to know how to express "if An object with the given name already exists" in Matlab, to control my optimization and simulation. The error ...
If you want to find out whether a specific sheet exists in an Excel file, just modify the Sub, pass in a String parameter name, that is the name of the sheet, and then compare whether the sheet name is equal each time you get it in the Sub. prettyprint 複製 Public Class Form1 ...
This section of the documentation is about S-Functions, but nearly everything in it applies equally well to all blocks, and to entire models. In Normal mode, running a Model method runs the corresponding Block method for each block in the model. For ...
One way would be to initialize then to a known date and time, and comparing that. DateTime is a structure, and not a class per se, so when you create one, it will be all zeroes, or minimums.Check out this snippet. I'll ruin the surprise and tell you that they are all the same...
Check if Key Exists in PHP Array Using theisset()Function PHP provides functionisset(), which determines if a variable is set; this means if a variable is declared and assigned value other than null.isset()will return false when a variable has been assigned to null. ...