利用ASP绘制动态直方图

方法与具体实例：

由于在WEB页面上绘制动态直方图依据的是从数据库中取出的动态变化的数据，所以我们在绘制图形之前先要用ASP检索并取出数据库中的数据。然后再编写脚本，进行黑穗病匠绘制。

绘制动态直方图的具体方法如下：

（1）建立相应的数据表，在控制面板的ODBC中设置DSN数据源；

（2）绘制一个500X300的单色面矩形图，并将其保存为gif格式。该图用来绘制坐标及刻度线；

（3）编写脚本，完成数据检索，坐标轴，刻度线及柱型图的定位，标注。-Using ASP to draw the the dynamic histogram method with specific examples: the to draw dynamic histogram based on the WEB page is removed from the database and the dynamic changes in the data, so we need to use before the graph is drawn ASP retrieve and remove the data in the database . Then write a scr ipt, smut Carpenter draw. Drawing dynamic histogram method is as follows: (1) establish a data table settings in the Control Panel ODBC DSN data source　(2) draw a 500X300 monochrome surface histogram, and save it as gif format. The figure is used to draw a line of coordinates and scale　(3) to write the scr ipt, complete data retrieval, positioning, labeling of axes, tick marks, and columnar chart.