R2V 5.5.030812HH
R2Visdevelopedusingobject-oriented（面向对象）technologieswhichmakesthesoftwarehighlyefficienttoprocessandmanipulatebothraster（栅格）andvector（矢量）data.Itisimportanttohaveagoodunderstandinghowdifferenttypesofdata,suchasimage（图像）,vectorlines（矢量线）,points,controlpoints（控制点）andtext,arehandledbytheso
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