用matlab读取sqlite数据库中的BLOB方式存储的双精度数据块。以字符方式读入，利用矩阵方式进行高地位交换处理，具有较高的读入速度。-read the double data for sqlite database in whith the data is save as BLOB style. The data is read as string and operated as a big matrix. This program run at the best speed.