给栅格数据添加RasterFunction--自定义渲染方法

<script type="text/javascript">
/**
dojo.require("esri.map");
dojo.require("esri.layers.ArcGISImageServiceLayer");
dojo.require("esri.layers.TimeInfo");
dojo.require("esri.TimeExtent");
dojo.require("esri.dijit.TimeSlider");
dojo.require("dojo.dom");*/

require([
"esri/map", "esri/layers/ArcGISImageServiceLayer",
"esri/TimeExtent", "esri/layers/TimeInfo","esri/dijit/TimeSlider","esri/layers/RasterFunction",
"dojo/dom", "dojo/domReady!"
], function(
Map, ArcGISImageServiceLayer,
TimeExtent, TimeInfo,TimeSlider, dom
){
//$("#dataTable").height($(window).height()-255);
if(dijit.byId("timeSliderDiv")){
dijit.byId("timeSliderDiv").destroy();
}
timeSlider = new esri.dijit.TimeSlider({
style: "width: 100%;"
}, dojo.byId("timeSliderDiv"));

var imageService = Application.configData.imageServices.get("DBZ");
if(imageService && imageService.url){
//
var colorRF = new esri.layers.RasterFunction();
colorRF.functionName = "Colormap";
colorRF.functionArguments = {
"Colormap" : [
[4,0,159,245],
[5,0,235,235],
[6,0,215,0],
[7,0,143,0],
[8,254,254,0],
[9,230,191,0],
[10,254,143,0],
[11,254,0,0],
[12,213,0,0],
[13,191,0,0],
[14,254,0,239],
[15,149,0,179],
[16,172,143,239]
]
};
//
colorRF.variableName  = "Raster";
//
var imageServiceParameters = new esri.layers.ImageServiceParameters();
//imageServiceParameters.noData = 0;
imageServiceParameters.renderingRule = colorRF;

imageLayer = new esri.layers.ArcGISImageServiceLayer(imageService.url,{"imageServiceParameters":imageServiceParameters});
//
//
imageLayer.on("load",initSlider);
var map = Application.map;
var layer = map.addLayer(imageLayer);
//layer.setRenderingRule(colorRF);
}

function initSlider() {
Application.map.setTimeSlider(timeSlider);

timeSlider.setThumbCount(1);
//  timeSlider.createTimeStopsByTimeInterval(timeExtent, 2, "esriTimeUnitsYears");
if(imageLayer.timeInfo){
timeSlider.createTimeStopsByTimeInterval(imageLayer.timeInfo.timeExtent,30,TimeInfo.UNIT_MINUTES);
}
timeSlider.setThumbMovingRate(1000);
//timeSlider.singleThumbAsTimeInstant(true);
timeSlider.setLoop(true);
timeSlider.startup();

for(var i=0;i<timeSlider.timeStops.length;i++){
var date = timeSlider.timeStops[i];
$("#dataTableBody").append("<tr onClick='onClickDataRow(event)' time='"+date.getTime()+"'><td align='center'>"+(i+1)+"</td><td align='center'>"+date.format("yyyy-MM-dd hh:mm:ss")+"</td>");
}

timeSlider.on("time-extent-change", function(evt) {
//var startValString = evt.startTime.getUTCFullYear();
var endValString = evt.endTime.getTime();
//alert(endValString);
//避免播放组件进入下一次循环播放
if(endValString == timeSlider.timeStops[timeSlider.timeStops.length-1].getTime()){
timeSlider.pause();
}
$("#dataTableBody").children().removeClass("active");
//在列表中选中播放组件当前播放的影像
$.each($("#dataTableBody").children(),function(i,item){
if($(item).attr("time")==endValString){
$(item).addClass("active");
}
});
});
//播放组件默认播放当前最新的一张影像
timeSlider.setThumbIndexes([timeSlider.timeStops.length-1]);
}

});

</script>