[英]MPLD3: label information of barplot
我正在嘗試擴展此處提供的示例:
from mpld3 import utils
class ClickInfo(plugins.PluginBase):
"""Plugin for getting info on click"""
JAVASCRIPT = """
mpld3.register_plugin("clickinfo", ClickInfo);
ClickInfo.prototype = Object.create(mpld3.Plugin.prototype);
ClickInfo.prototype.constructor = ClickInfo;
ClickInfo.prototype.requiredProps = ["id"];
function ClickInfo(fig, props){
mpld3.Plugin.call(this, fig, props);
};
ClickInfo.prototype.draw = function(){
var obj = mpld3.get_element(this.props.id);
obj.elements().on("mousedown",
function(d, i){alert("clicked on points[" + i + "]");});
}
"""
def __init__(self, points):
self.dict_ = {"type": "clickinfo",
"id": utils.get_id(points)}
fig, ax = plt.subplots()
points = ax.scatter(np.random.rand(50), np.random.rand(50),
s=500, alpha=0.3)
plugins.connect(fig, ClickInfo(points))
我的目的是做相同的事情(單擊對象時顯示標簽),但是用barplot而不是scatterplot。
它不適用於相同的Javascript代碼:
from mpld3 import utils
class ClickInfo(plugins.PluginBase):
"""Plugin for getting info on click"""
JAVASCRIPT = """
mpld3.register_plugin("clickinfo", ClickInfo);
ClickInfo.prototype = Object.create(mpld3.Plugin.prototype);
ClickInfo.prototype.constructor = ClickInfo;
ClickInfo.prototype.requiredProps = ["id"];
function ClickInfo(fig, props){
mpld3.Plugin.call(this, fig, props);
};
ClickInfo.prototype.draw = function(){
var obj = mpld3.get_element(this.props.id);
obj.elements().on("mousedown",
function(d, i){alert("clicked on bar[" + i + "]");});
}
"""
def __init__(self, bars):
self.dict_ = {"type": "clickinfo",
"id": utils.get_id(bars)}
x = range(0,10)
y = np.random.rand(10)
fig, ax = plt.subplots()
bars = ax.bar(x, y)
plugins.connect(fig, ClickInfo(bars))
但是,我可以獲得其中一種工作行為。 例如,使用plugins.connect(fig, ClickInfo(bars[0]))
,單擊第一欄將觸發警報Javascript代碼。
題:
我如何對每個酒吧都具有相同的行為?
此外,由於我對D3和Javascript經驗不足,因此簡短解釋代碼的工作方式將非常有幫助。 也歡迎任何學習資源,因為我找不到MPLD3教程。
我遇到了同樣的問題,並擴展了帶有浮動標簽的堆積條形圖的答案,您可以在此處找到:
http://nbviewer.ipython.org/gist/Iggam/416520098460b057c208
該代碼可以在這里找到:
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
import mpld3
from mpld3 import plugins, utils
class BarLabelToolTip(plugins.PluginBase):
JAVASCRIPT = """
mpld3.register_plugin("barlabeltoolTip", BarLabelToolTip);
BarLabelToolTip.prototype = Object.create(mpld3.Plugin.prototype);
BarLabelToolTip.prototype.constructor = BarLabelToolTip;
BarLabelToolTip.prototype.requiredProps = ["ids","labels"];
BarLabelToolTip.prototype.defaultProps = {
hoffset: 0,
voffset: 10,
location: 'mouse'
};
function BarLabelToolTip(fig, props){
mpld3.Plugin.call(this, fig, props);
};
BarLabelToolTip.prototype.draw = function(){
var svg = d3.select("#" + this.fig.figid);
var objs = svg.selectAll(".mpld3-path");
var loc = this.props.location;
var labels = this.props.labels
test = this.fig.canvas.append("text")
.text("hello world")
.style("font-size", 72)
.style("opacity", 0.5)
.style("text-anchor", "middle")
.attr("x", this.fig.width / 2)
.attr("y", this.fig.height / 2)
.style("visibility", "hidden");
function mousemove(d) {
if (loc === "mouse") {
var pos = d3.mouse(this.fig.canvas.node())
this.x = pos[0] + this.props.hoffset;
this.y = pos[1] - this.props.voffset;
}
test
.attr("x", this.x)
.attr("y", this.y);
};
function mouseout(d) {
test.style("visibility", "hidden")
};
this.props.ids.forEach(function(id, i) {
var obj = mpld3.get_element(id);
function mouseover(d) {
test.style("visibility", "visible")
.style("font-size", 24)
.style("opacity", 0.7)
.text(labels[i])
};
obj.elements().on("mouseover", mouseover.bind(this))
});
objs.on("mousemove", mousemove.bind(this))
.on("mouseout", mouseout.bind(this));
}
"""
def __init__(self, ids, labels=None, location="mouse"):
self.dict_ = {"type": "barlabeltoolTip",
"ids": ids,
"labels": labels,
"location": location}
fig, ax = plt.subplots()
x = range(0,10)
y = np.random.rand(10)
bars = ax.bar(x, y)
labels = [round(bar.get_height(),2) for bar in bars]
ids = [utils.get_id(bar) for bar in bars]
plugins.connect(fig, BarLabelToolTip(ids, labels))
您走在正確的軌道上。 這是一種使您工作的方法:
from mpld3 import utils, plugins
class ClickInfo(plugins.PluginBase):
"""Plugin for getting info on click"""
JAVASCRIPT = """
mpld3.register_plugin("clickinfo", ClickInfo);
ClickInfo.prototype = Object.create(mpld3.Plugin.prototype);
ClickInfo.prototype.constructor = ClickInfo;
ClickInfo.prototype.requiredProps = ["ids"];
function ClickInfo(fig, props){
mpld3.Plugin.call(this, fig, props);
};
ClickInfo.prototype.draw = function(){
this.props.ids.forEach(function(id, i) {
var obj = mpld3.get_element(id);
obj.elements().on("mousedown",
function(d){alert("clicked on bar[" + i + "]");});
});
}
"""
def __init__(self, bars):
self.dict_ = {"type": "clickinfo",
"ids": [utils.get_id(bar) for bar in bars]}
x = range(0,10)
y = np.random.rand(10)
fig, ax = plt.subplots()
bars = ax.bar(x, y)
plugins.connect(fig, ClickInfo(bars))
您可以在此處查看它的運行情況 。 也許其他人將有時間用更多關於代碼如何工作的解釋來擴展此答案。
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