How to fix the error using -FROMSTRUCT ?

i am using the following matlab code

% Save the transformation directly without using a structure
            [outputDir, baseName, ~] = fileparts(outputFiles{i});
            transformFile = fullfile(outputDir, [baseName, '_tform.mat']);
            save(transformFile, 'tform', '-fromstruct');

It is giving the error as

The -FROMSTRUCT option must be followed by a scalar structure variable.

I request you to kindly suggest me how to fix it.

Answer 1

[埃博拉酱]

The error message is clear: -fromStruct asks you to enter a struct scalar, and then save each field name of the input struct as the name of each variable of the .mat. The 'tform' you type is an array of characters, not a struct.

[Walter Roberson]

In other words you need

save(transformFile, '-fromstruct', tform)

provided that tform is a structure.

Notice that in this case, tform is the structure itself, not the name of the structure.

In the case where tform is the name of a structure (rather than an expression that yields a structure), then equivalent would be

save(transformFile, '-struct', 'tform')