3/17/2021 0 Comments Matlab Load Mat Data
Create a Version 7.3 MAT-file with two variables, A and B.By default, matfile only permits loading from existing MAT-files.
When you index into objects associated with Version 7.3 MAT-files, MATLAB loads only the part of the variable that you specify. Otherwise, repeated file access negatively impacts the performance of your code. For example, suppose that your file contains many rows and columns, and that loading a single row requires most of the available memory. The -append option requests that the save function replace only the specified variable, B, and leave other variables in the file intact. This method always requires that you load and save the entire variable. This is useful when working with MAT-files whose variables names are not always known. Consider the example MAT-file, topography.mat, that contains one or more arrays with unknown names. Construct a MatFile object that corresponds to the file, topography.mat. Call who to get the variable names in the file. 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. Then, access the data in each variable as properties of exampleObject. Avoid Inadvertently Loading Entire Variables When you do not know the size of a large variable in a MAT-file and want to load only parts of. Partial Loading and Saving Requires Version 7.3 MAT-Files Any load or save operation that uses a MatFile object associated with a. Version 7 MAT-files.
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