我正在使用http://bost.ocks.org/mike/treemap/尝试将D3树形图合并到Splunk中。但是，它在d3.JSON（＆＃34; flare.json＆＃34;）上出错，因为它无法找到该文件。我已经尝试将JSON数组放入js并调用root = JSON.parse（myjson），但随后它使用意外字符JSON.parse进行数组。如果你看看Bostick页面中的js，你可以看到我不能删除d3.JSON，因为它会回调实际渲染树形图的函数。
你对我如何解决这个问题有什么想法吗？
renderResults: function($super, results) {
if(!results) {
this.resultsContainer.html('No content available.');
return;
}
var margin = {top: 20, right: 0, bottom: 0, left: 0},
width = 960,
height = 500 - margin.top - margin.bottom,
formatNumber = d3.format(",d"),
transitioning;
var x = d3.scale.linear()
.domain([0, width])
.range([0, width]);
var y = d3.scale.linear()
.domain([0, height])
.range([0, height]);
var treemap = d3.layout.treemap()
.children(function(d, depth) { return depth ? null : d._children; })
.sort(function(a, b) { return a.value - b.value; })
.ratio(height / width * 0.5 * (1 + Math.sqrt(5)))
.round(false);
var svg = d3.select("#chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.bottom + margin.top)
.style("margin-left", -margin.left + "px")
.style("margin.right", -margin.right + "px")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.style("shape-rendering", "crispEdges");
var grandparent = svg.append("g")
.attr("class", "grandparent");
grandparent.append("rect")
.attr("y", -margin.top)
.attr("width", width)
.attr("height", margin.top);
grandparent.append("text")
.attr("x", 6)
.attr("y", 6 - margin.top)
.attr("dy", ".75em");
var myjson = not including the actual array to save space
root = JSON.parse(myjson);
d3.json("flare.json", function(root) {
initialize(root);
accumulate(root);
layout(root);
display(root);
function initialize(root) {
root.x = root.y = 0;
root.dx = width;
root.dy = height;
root.depth = 0;
}
// Aggregate the values for internal nodes. This is normally done by the
// treemap layout, but not here because of our custom implementation.
// We also take a snapshot of the original children (_children) to avoid
// the children being overwritten when when layout is computed.
function accumulate(d) {
return (d._children = d.children)
? d.value = d.children.reduce(function(p, v) { return p + accumulate(v); }, 0)
: d.value;
}
// Compute the treemap layout recursively such that each group of siblings
// uses the same size (1×1) rather than the dimensions of the parent cell.
// This optimizes the layout for the current zoom state. Note that a wrapper
// object is created for the parent node for each group of siblings so that
// the parent’s dimensions are not discarded as we recurse. Since each group
// of sibling was laid out in 1×1, we must rescale to fit using absolute
// coordinates. This lets us use a viewport to zoom.
function layout(d) {
if (d._children) {
treemap.nodes({_children: d._children});
d._children.forEach(function(c) {
c.x = d.x + c.x * d.dx;
c.y = d.y + c.y * d.dy;
c.dx *= d.dx;
c.dy *= d.dy;
c.parent = d;
layout(c);
});
}
}
function display(d) {
grandparent
.datum(d.parent)
.on("click", transition)
.select("text")
.text(name(d));
var g1 = svg.insert("g", ".grandparent")
.datum(d)
.attr("class", "depth");
var g = g1.selectAll("g")
.data(d._children)
.enter().append("g");
g.filter(function(d) { return d._children; })
.classed("children", true)
.on("click", transition);
g.selectAll(".child")
.data(function(d) { return d._children || [d]; })
.enter().append("rect")
.attr("class", "child")
.call(rect);
g.append("rect")
.attr("class", "parent")
.call(rect)
.append("title")
.text(function(d) { return formatNumber(d.value); });
g.append("text")
.attr("dy", ".75em")
.text(function(d) { return d.name; })
.call(text);
function transition(d) {
if (transitioning || !d) return;
transitioning = true;
var g2 = display(d),
t1 = g1.transition().duration(750),
t2 = g2.transition().duration(750);
// Update the domain only after entering new elements.
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
// Enable anti-aliasing during the transition.
svg.style("shape-rendering", null);
// Draw child nodes on top of parent nodes.
svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; });
// Fade-in entering text.
g2.selectAll("text").style("fill-opacity", 0);
// Transition to the new view.
t1.selectAll("text").call(text).style("fill-opacity", 0);
t2.selectAll("text").call(text).style("fill-opacity", 1);
t1.selectAll("rect").call(rect);
t2.selectAll("rect").call(rect);
// Remove the old node when the transition is finished.
t1.remove().each("end", function() {
svg.style("shape-rendering", "crispEdges");
transitioning = false;
});
}
return g;
}
function text(text) {
text.attr("x", function(d) { return x(d.x) + 6; })
.attr("y", function(d) { return y(d.y) + 6; });
}
function rect(rect) {
rect.attr("x", function(d) { return x(d.x); })
.attr("y", function(d) { return y(d.y); })
.attr("width", function(d) { return x(d.x + d.dx) - x(d.x); })
.attr("height", function(d) { return y(d.y + d.dy) - y(d.y); });
}
function name(d) {
return d.parent
? name(d.parent) + "." + d.name
: d.name;
}
};
}
我仍然不能100％确定这两者是否能够互动。我有一点JavaScript经验，但没有Python经验。 Splunk将所有这些脚本集成在一起的方式令人费解。
import cherrypy
import controllers.module as module
import splunk, splunk.search, splunk.util, splunk.entity
import json
from splunk.appserver.mrsparkle.lib import jsonresponse
import lib.util as util
import lib.i18n as i18n
import logging
logger = logging.getLogger('splunk.module.TreeMap1')
import math
import cgi
class TreeMap1(module.ModuleHandler):
def generateResults(self, host_app, client_app, sid, count=1000,
offset=0, entity_name='results'):
count = max(int(count), 0)
offset = max(int(offset), 0)
if not sid:
raise Exception('TreeMap1.generateResults - sid not passed!')
try:
job = splunk.search.getJob(sid)
except splunk.ResourceNotFound, e:
logger.error('TreeMap could not find job %s. Exception: %s' % (sid, e))
return _('<p class="resultStatusMessage">Could not get search data.</p>')
dataset = getattr(job, entity_name)[offset: offset+count]
outputJSON = {}
for i, result in enumerate(dataset):
tdict = {}
tdict[str(result.get('itemName', None))] = str(result.get('totalCPU', None))
name = str(result.get('itemCat', None))
if name not in outputJSON:
outputJSON[name] = dict()
outputJSON[name].update(tdict)
cherrypy.response.headers['Content-Type'] = 'text/json'
return json.dumps(outputJSON, sort_keys=True)
def render_json(self, response_data, set_mime='text/json'):
cherrypy.response.headers['Content-Type'] = set_mime
if isinstance(response_data, jsonresponse.JsonResponse):
response = response_data.toJson().replace("</", "<\\/")
else:
response = json.dumps(response_data).replace("</", "<\\/")
return ' ' * 256 + '\n' + response
答案 0 :(得分：1)
D3＆＃39; s d3.JSON(url, ...)字面上执行GET请求并尝试将响应解析为JSON *;它类似于jQuery的$.getJSON(url, ...)。如果您已经拥有构建树图所需的JSON，那么只需完全忽略该调用并直接进入回调。 如果您已有数组/对象，则不需要JSON.parse ; JSON.parse将有效的JSON字符串转换为数组/对象。
*有关详情......
，请参阅d3.json上的文档同样，如果您已有数据，则可以使用：
...
var myJSON = [ ... ] //The actual array you're loading.
initialize(myJSON);
accumulate(myJSON);
layout(myJSON);
display(myJSON);
...
然而，会注意到您在上面的代码中实际执行的操作。您已将数组传递给initialize - 这似乎需要对象：
function initialize(root) { //Root in this case is myVar -- an ARRAY.
root.x = root.y = 0; //Arrays don't have fields. This is BAD.
root.dx = width;
root.dy = height;
root.depth = 0;
}
因此，您应该做的是弄清楚myJSON应该使用什么类型的结构。
如果您要修复的错误实际上是＆＃34; flare.json＆＃34;无法找到文件，那么您的问题实际上是服务器端。你是如何服务flare.json文件的？尝试在浏览器中访问它，以确保它位于您认为的位置。