Downloading the aa code
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aa provides pipeline software, but relies on other analysis packages, such as SPM. These additional software packages need to be downloaded and in your Matlab path for aa to work. You can get SPM from the SPM website: http://www.fil.ion.ucl.ac.uk/spm/software/. If you are new to imaging or aa, it is probably sufficient to start with just SPM. Some functions rely on other packages (e.g., FSL), which will be apparent as you construct different analysis pipelines.
Once you have the aa files, “installing” is as simple as adding the automaticanalysis folder to your Matlab path. The easiest way to do this is to use the Set Path dialog box. On the Home tab, in the Environment section, click “Set Path”. You can then click “Add Folder” and select the automatic analysis folder. Alternatively, you can use the addpath command in Matlab (for instructions, type “help addpath” into the Matlab command prompt).
Once you’ve started a Matlab session, type at the Matlab prompt the following to add the Automatic Analysis paths: