R2V 5.5.030812HH

R2V is developed using object-oriented（面向对象） technologies which makes the software highly efficient to process and manipulate both raster（栅格） and vector（矢量） data. It is important to have a good understanding how different types of data, such as image（图像）, vector lines（矢量线）, points, control points（控制点） and text, are handled by the software and how they are generated（生成）, displayed（显示）, and saved（存储） to files.