MetaArray.py 文件源码

def _readData1(self, fd, meta, mmap=False, **kwds):
        ## Read array data from the file descriptor for MetaArray v1 files
        ## read in axis values for any axis that specifies a length
        frameSize = 1
        for ax in meta['info']:
            if 'values_len' in ax:
                ax['values'] = np.fromstring(fd.read(ax['values_len']), dtype=ax['values_type'])
                frameSize *= ax['values_len']
                del ax['values_len']
                del ax['values_type']
        self._info = meta['info']
        if not kwds.get("readAllData", True):
            return
        ## the remaining data is the actual array
        if mmap:
            subarr = np.memmap(fd, dtype=meta['type'], mode='r', shape=meta['shape'])
        else:
            subarr = np.fromstring(fd.read(), dtype=meta['type'])
            subarr.shape = meta['shape']
        self._data = subarr