Check If A Fieldname Exists In Mat File

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Check if a fieldname exists in mat file.

If it does not find a variable of that name it will throw a warning. Here is a simple example to read all the mat files in a given directory and load a variable named myvar if it exists. Is there an option in save or any other function which support automatic renaming if the filename already exists or do i need to check by myself. Note that we use the isequal bit to check if it is actually a file or a folder.

Let us say i look for whether any pdf file is present in my working directory. However imgdata load mandrill works perfectly fine. If we take the isequal check out then the first if statement would be true for a file and a folder since exist. Categories matlab app building.

Save the function as a matlab file named myisfield m. 0 name does not exist or cannot be found for other reasons. Here s how to do it. Check for existence of mat file in search path.

Function checkiffieldnameexists fieldname as string filename as string as string dim db as database dim table as table dim field as field dim i. Open the matlab editor and paste the following function into it. 2 name is a file with extension m mlx or mlapp or name is the name of a file with a non registered file extension mat fig txt. Show hide all comments.

Show hide all comments. Same applies for the seamount image. Is there a way to check the files exists in a particular directory without using the filename what i mean to say is the more generalised way to find out 0 comments. This routine will check to see if a field name exists and if it the field name already exists then it will return a field name that does not exist by adding a 1 to the end of the field name.

I get false back which i normally would interpret as the mat file doesn t exist in the matlab search path. So you want to check if a file or a folder exists in matlab. 1 name is a variable in the workspace. Show hide all comments.

Sign in to answer this question. The file folder to find. For example if name exists in a restricted folder to which matlab does not have access exist returns 0. To determine if a field exists at any level in a nested structure create a new function that examines all levels of the structure.

Like saving as file2 mat if file mat already exist 0 comments. If it does find one it will load the variable. Sign in to answer this question. I require to check whether any file exists with a specific extension in a given folder.

Common Errors When Calling Functions Matlab Simulink

Common Errors When Calling Functions Matlab Simulink

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Create And Edit Variables Matlab Simulink

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