Matlab Add Variable To Mat File

Access specific parts of a variable in a mat file using the mat file object.

Matlab add variable to mat file. Create a table that contains the names ages heights and weights of patients. If filename has no extension that is no period followed by text and the value of format is not specified then matlab appends mat if filename does not include a full path matlab saves to the current folder. If filename has no extension that is no text after a period load looks for a file named filename mat if filename has an extension other than mat the load function treats. Save data to a subset of a variable y in the file myfile2 mat using the mat file object.

Name of file specified as a character vector or string scalar. Name of file specified as a character vector or string scalar. Each read variable will be stored in a field of the struct. So your data data data etc variable names will get loaded as data data00002 data00003 etc.

Let me know if you have any. For example you can save data to a subset of a variable in a mat file or read a subset of a variable into the matlab workspace. If you do not specify filename the load function searches for a file named matlab mat. Load arrays from the patients mat file.

This new version has undergone only a limited amount of testing but it appears to be working as expected. I have a data in the following format. Then add variables from the workspace to the table. Varlist is a cell array containing the names of the four variables in topography mat.

Load the mat file into a struct using the load function. It will load all of the variables it finds in the mat file and change any duplicate names to avoid name clashes. Then display the first three rows. To add one o more variables to an existing mat file you can use the save function by specifying the option append.

Remove from that struct the the field corresponding to the varaible you want to delete. To remove one or more variables from an existing mat file you can. The third and fourth variables topomap1 and topomap2 are both arrays containing topography data load the elevation data from the third column of each variable into a field of the structure array s for each field specify a field name that is the original variable name prefixed by elevationof. A mat file does not have rows.

You can save an additional variable in your mat file if you want though. I j k val where i j k are variables and val is the corresponding data at i j k values. I want to save the mat file in the i j k val format so that my mat files looks like.