我正在使用「Protovis Mean & Deviation Example」繪製圖表。在我的HTML文件,我包括這protovis代碼:如何使用Javascript功能更新Protovis數據?
<script type="text/javascript+protovis">
/* Convert from tabular format to array of objects. */
var cols = nba.shift();
nba = nba.map(function(d) pv.dict(cols, function() d[this.index]));
cols.shift();
/* The color scale ranges 3 standard deviations in each direction. */
var x = pv.dict(cols, function(f) pv.mean(nba, function(d) d[f])),
s = pv.dict(cols, function(f) pv.deviation(nba, function(d) d[f])),
fill = pv.dict(cols, function(f) pv.Scale.linear(0, 50,100).range('red', 'yellow', 'green'));
var w = 50, h = 20;
var vis = new pv.Panel()
.width(cols.length * w)
.height(nba.length * h)
.top(70)
.left(100.5)
.right(.5)
.bottom(.5);
vis.add(pv.Panel)
.data(cols)
.left(function() this.index * w)
.width(w)
.add(pv.Panel)
.data(nba)
.top(function() this.index * h)
.height(h)
.strokeStyle("white")
.lineWidth(1)
.fillStyle(function(d, f) fill[f](d[f]))
.title(function(d, f) d.Name + "'s " + f + ": " + d[f]);
vis.add(pv.Label)
.data(cols)
.left(function() this.index * w + w/2)
.top(0)
.textAngle(-Math.PI/2)
.textBaseline("middle");
vis.add(pv.Label)
.data(nba)
.left(0)
.top(function() this.index * h + h/2)
.textAlign("right")
.textBaseline("middle")
.text(function(d) d.Name);
vis.render();
</script>
現在,爲用戶提供有效的數據protovis,我寫了一個JavaScript函數。我的javascript函數中的相關代碼如下:
for(var k=0; k< xlabelValues.length; k++){ //xAxis header values are in xlabelValues
nba[0][k+1] = xlabelValues[k];
}
for(var k=0; k< ylabelValues.length; k++){ //yAxis header values are in ylabelValues
nba[k+1] = [];
nba[k+1][0] = ylabelValues[k];
for(var e=1; e<nba[0].length; e++){
zValue = hash3D[nba[0][e]+","+ylabelValues[k]]; //hash3D contains numeric values for (x,y) as KEY
if(typeof zValue == "undefined"){
nba[k+1][e] = 0;
}else{
nba[k+1][e] = zValue;
}
}
}
此函數爲protovis填充「nba」數據結構。數據結構在我需要時是有效的。這樣的數據結構的樣品低於:
var nba = [
["","January","Feburary","March","April","May","June","July","August","Sep temebr","October","November","December"],
["Event 1",79,38.6,30.2,10.8,22,0.491,7.5,9.8,0.765,1.1,3.5,0.317],
["Event 2",81,37.7,28.4,9.7,19.9,0.489,7.3,9.4,0.78,1.6,4.7,0.344],
["Event 3",82,36.2,26.8,9.8,20.9,0.467,5.9,6.9,0.856,1.4,4.1,0.351],
["Event 4",81,37.7,25.9,9.6,20,0.479,6,6.7,0.89,0.8,2.1,0.359]
];
問題:既然,protovis腳本是在腳本標籤我main.html中的文件,因此,我應該怎麼傳protovis這個「NBA」數據結構?我只想在使用javascript函數填充「nba」之後執行protovis代碼。
我希望我已經清除了我的問題,期待您的建議和解決方案。非常感謝您的寶貴時間。