用Flash Actionscript简单方法实现复杂的图表

核心提示：代码如下：//这个数组的最前一位和最后一位,在这里的作用只起到占位的作用dataTable=[];dataTable.push(["1851-1860",8,5,5,1,0,19]);dataTable.push(["1861-1870",8,6,1,0,0,15]);dataT

代码如下：

//这个数组的最前一位和最后一位,在这里的作用只起到占位的作用
dataTable=[];
dataTable.push(["1851-1860",8,5,5,1,0,19]);
dataTable.push(["1861-1870",8,6,1,0,0,15]);
dataTable.push(["1871-1880",7,6,7,0,0,20]);
dataTable.push(["1881-1890",8,9,4,1,0,22]);
dataTable.push(["1891-1900",8,5,5,3,0,21]);
dataTable.push(["1901-1910",10,4,4,0,0,18]);
dataTable.push(["1911-1920",10,4,4,3,0,21]);
dataTable.push(["1921-1930",5,3,3,2,0,13]);
dataTable.push(["1931-1940",4,7,6,1,1,19]);
dataTable.push(["1941-1950",8,6,9,1,0,24]);
dataTable.push(["1951-1960",8,1,5,3,0,17]);
dataTable.push(["1961-1970",3,5,4,1,1,14]);
dataTable.push(["1971-1980",6,2,4,0,0,12]);
dataTable.push(["1981-1990",9,1,4,1,0,15]);
dataTable.push(["1991-2000",3,6,4,0,1,14]);
dataTable.push(["2001-2005",7,2,3,3,1,9]);
//这个函数把数组中的每一个元素中的第n个元素存在一个临时的数组,返回这个数组
get2dArrayValues=function(handle,n){
temp=[];
for(vari=0;i<handle.length;i++){
　temp.push(handle[n]);
}
returntemp;
};
//重点讲一下这个函数
drawGraph=function(handle,values,max,grpWidth,grpHeight,Style,xoffset,yoffset){
//这两句确定了每个数据点应该相隔多远
varxincrement=grpWidth/values.length;
varyincrement=grpHeight/max;
//为图表创建占位符,依据xoffset,yoffset移动它.重复利用handle变量名,指向createEmptyMovieClip方法创建的子电影剪辑
handle=handle.createEmptyMovieClip("graphline"+getTimer(),handle.getNextHighestDepth());
handle._x=xoffset;
handle._y=yoffset;
//定义beginFill样式,开始点
handle.lineStyle(0,0xFFFFFF,4);
handle.moveTo(0,grpHeight);
handle.beginFill(Style[0],Style[1]);
//绘制第一根线条,它的值是变化的,保持把这个lineTo与下面的lineTo值隔离开,x是0,y稍微复杂一点
handle.lineTo(0,grpHeight-(values[0]*yincrement));
//有了上面的起始位置,那么接下来只要遍历余下的值就可以了
for(vari=1;i<values.length;i++){
　handle.lineTo((i*xincrement),grpHeight-(values*yincrement));
}
//数组是以0位开始的,所以这里要减1
handle.lineTo((values.length-1)*xincrement,grpHeight);
//封闭形状
handle.lineTo(0,grpHeight);
handle.endFill();
};
//建立一个MC
myGraph=this.createEmptyMovieClip("graphHolder",0);
//调用函数后返回的值赋予F1
varF1:Array=get2dArrayValues(dataTable,1);
//调用函数,求出每个点的位置
drawGraph(myGraph,F1,12,800,200,[0x3C4B6C,5],22);
//以下同上
varF2:Array=get2dArrayValues(dataTable,2);
drawGraph(myGraph,F2,12,800,200,[0x3C4B6C,25],22);
varF3:Array=get2dArrayValues(dataTable,3);
drawGraph(myGraph,F3,12,800,200,[0x3C4B6C,45],22);
varF4:Array=get2dArrayValues(dataTable,4);
drawGraph(myGraph,F4,12,800,200,[0x3C4B6C,65],22);
varF5:Array=get2dArrayValues(dataTable,5);
drawGraph(myGraph,F5,12,800,200,[0x000000,85],22);