Stm File Viewer Apr 2026

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| Dataset | Dimensions | Size (MB) | Load time (s) | Memory (MB) | 3D FPS | |---------|------------|-----------|---------------|-------------|---------| | Au(111) surface | 1024×1024 | 4.2 | 0.28 | 18 | 60 | | Graphene on SiO₂ | 2048×2048 | 16.8 | 0.91 | 42 | 58 | | High-res Si(111) | 8192×8192 | 268.4 | 1.32* | 86** | 42 | stm file viewer

def parse_binary_stm(filepath): with open(filepath, 'rb') as f: magic = struct.unpack('<I', f.read(4))[0] if magic != 0x4D5453: raise ValueError("Not an STM file") w, h = struct.unpack('<II', f.read(8)) xstep, ystep = struct.unpack('<ff', f.read(8)) bdepth = struct.unpack('<H', f.read(2))[0] f.read(2) # endianness flag data = np.frombuffer(f.read(), dtype=np.dtype(f'<ubdepth')) data = data.reshape(h, w).astype(np.float32) # convert to physical units data *= xstep # example scaling return data, (xstep, ystep) : memory mapping for files >200 MB using numpy.memmap . 5. Experimental Evaluation We tested the viewer on three real STM datasets: : | Dataset | Dimensions | Size (MB)

*with memory mapping enabled **peak working set 'rb') as f: magic = struct.unpack('&lt