Check If A Fieldname Exists In Mat File

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.

Check if a fieldname exists in mat file.

Here s how to do it. Sign in to answer this question. Sign in to comment. Here is a simple example to read all the mat files in a given directory and load a variable named myvar if it exists.

Sign in to comment. Categories matlab app building. Function checkiffieldnameexists fieldname as string filename as string as string dim db as database dim table as table dim field as field dim i. If we take the isequal check out then the first if statement would be true for a file and a folder since exist.

If it does not find a variable of that name it will throw a warning. 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. However imgdata load mandrill works perfectly fine. I require to check whether any file exists with a specific extension in a given folder.

Check for existence of mat file in search path. Follow 90 views last 30 days dm on 8 may 2012. Show hide all comments. 1 name is a variable in the workspace.

Same applies for the seamount image. Show hide all comments. So you want to check if a file or a folder exists in matlab. 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.

For example if name exists in a restricted folder to which matlab does not have access exist returns 0. Note that we use the isequal bit to check if it is actually a file or a folder. Sign in to answer this question. 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.

Like saving as file2 mat if file mat already exist 0 comments. Open the matlab editor and paste the following function into it. Matlab does not accept wildcard commands like. If it does find one it will load the variable.

Show hide all comments. The file folder to find. To determine if a field exists at any level in a nested structure create a new function that examines all levels of the structure. Save the function as a matlab file named myisfield m.