Depending on the plotting style being used, gnuplot may use up to six different numbers in plotting a single point. 取决于使用的绘图样式,gnuplot在绘制一个点时最多可以使用六个不同的编号。
It is actually an inverse problem of the existing contour plotting problem based on the given grid point values. 它是目前广泛流行的由离散网格点值绘制等值线图问题的反问题。
In the light of features of microcomputer plotting of survey and geology, as well as map of coal mine, this paper puts forward practical mathematical methods of calibrating digital map for coal mine, using surface spline function and data of characteristic point of graticule. 结合煤矿地测微机制图和相关矿图的特点,本文提出了利用曲面样条函数及公里网特征点数据校准数字化矿图的实用数学方法。