我已经调整了一些我在网上找到的例子,这些例子允许我在点击一个系列时删除/灰色(图例或线条本身)。
然后我想添加在数据表之间切换的功能,并将隐藏/灰色的内容转移到新数据表。
我从https://developers.google.com/chart/interactive/docs/animation#value-changes切换数据中提出了这个想法 (我的图表没有像示例那样正确动画)
我的问题是,当点击“切换”按钮并切换数据表时,我得到非常奇怪的结果,有时它会保持正确的选择但是当你点击不同的系列时,会神奇地出现,或者它将取消选择不同的系列而不是点击一下。我无法弄明白这两个数据表保持相同的选择(选择意味着灰色/删除系列)。
值得注意的是
columns.push({
calc: 'stringify',
sourceColumn: i,
type: 'string',
role: 'annotation'
});
正在添加隐藏列以辅助该系列的其他逻辑。虽然我目前没有直接使用它,但我希望它能够保持正常运行,因为我认为将来会使用它。这些“隐藏”列增加了我认为错误存在的复杂性。
代码在这里:
var button = document.getElementById('b1');
var current = 0;
var data = [];
var chart;
var options;
var ms2 = [{
"LOCAL_ID": "W-133",
"Class1": 29,
"Class2": 3628,
"Class3": 159,
"Class4": 24,
"Class5": 65,
"Class6": 12,
"Class7": 0,
"Class8": 12,
"Class9": 110,
"Class10": 41,
"Class11": 0,
"Class12": 0,
"Class13": 0
}, {
"LOCAL_ID": "14-6A-060",
"Class1": 19,
"Class2": 290,
"Class3": 224,
"Class4": 0,
"Class5": 0,
"Class6": 0,
"Class7": 0,
"Class8": 2,
"Class9": 0,
"Class10": 0,
"Class11": 1,
"Class12": 0,
"Class13": 0
}, {
"LOCAL_ID": "45-5-006",
"Class1": 7,
"Class2": 191,
"Class3": 165,
"Class4": 0,
"Class5": 6,
"Class6": 3,
"Class7": 0,
"Class8": 4,
"Class9": 18,
"Class10": 11,
"Class11": 0,
"Class12": 0,
"Class13": 10
}];
google.charts.load('current', {
'packages': ['line']
});
google.charts.setOnLoadCallback(init);
button.onclick = function() {
current = 1 - current;
button.disabled = true;
options.chart['subtitle'] = (current ? 'View 1' : 'View 2');
chart.draw(data[current], options);
};
function getData() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'Class');
ms2.forEach(function(masterLocation, index) {
data.addColumn('number', masterLocation.LOCAL_ID);
});
for (var i = 0; i < 13; i++) {
var arr = [i];
ms2.forEach(function(masterLocation, index) {
arr.push(masterLocation['Class' + i]);
});
data.addRow(arr);
}
return data;
}
function getRandomData(base) {
var data = new google.visualization.DataTable();
data.addColumn('number', 'Class');
data.addColumn('number', ms2[0].LOCAL_ID);
data.addColumn('number', ms2[1].LOCAL_ID);
data.addColumn('number', ms2[2].LOCAL_ID);
// add random data
var y1 = base,
y2 = base,
y3 = base;
for (var i = 0; i < 13; i++) {
y1 += Math.floor(Math.random() * 5) * Math.pow(-1, Math.floor(Math.random() * 2));
y2 += Math.floor(Math.random() * 5) * Math.pow(-1, Math.floor(Math.random() * 2));
y3 += Math.floor(Math.random() * 5) * Math.pow(-1, Math.floor(Math.random() * 2));
data.addRow([i, y1, y2, y3]);
}
return data;
}
function init() {
data = [];
data[0] = getData();
data[1] = getRandomData(1000);
chart = new google.charts.Line(document.getElementById('chart_div'));
options = {
chart: {
title: 'Box Office Earnings in First Two Weeks of Opening',
subtitle: 'in millions of dollars (USD)'
},
width: 500,
height: 300,
vAxis: {
gridlines: {
color: '#ccc'
}
},
hAxis: {
gridlines: {
color: '#ccc'
}
},
animation: {
duration: 1000,
easing: 'out'
}
};
drawChart();
}
function drawChart() {
var columns = [];
var defaultSeries = [1, 2, 3];
var series = {};
for (var i = 0; i < data[current].getNumberOfColumns(); i++) {
if (i === 0 || defaultSeries.indexOf(i) > -1) {
// if the column is the domain column or in the default list, display the series
columns.push(i);
} else {
// otherwise, hide it
columns.push({
label: data.getColumnLabel(i),
type: data.getColumnType(i),
sourceColumn: i,
calc: function() {
return null;
}
});
}
if (i > 0) {
columns.push({
calc: 'stringify',
sourceColumn: i,
type: 'string',
role: 'annotation'
});
// set the default series option
series[i - 1] = {};
if (defaultSeries.indexOf(i) == -1) {
// backup the default color (if set)
if (typeof(series[i - 1].color) !== 'undefined') {
series[i - 1].backupColor = series[i - 1].color;
}
series[i - 1].color = '#CCCCCC';
}
}
}
options['series'] = series;
function showHideSeries() {
var sel = chart.getSelection();
if (sel.length < 1 || sel[0].row) {
return;
}
var col = sel[0].column;
if (typeof(columns[col]) == 'number') {
var src = columns[col];
var calcFunc = null;
if (document.getElementById("removeSeriesOnSelect").checked) {
calcFunc = function() {
return null;
};
}
columns[col] = {
label: data[current].getColumnLabel(src),
type: data[current].getColumnType(src),
sourceColumn: src,
calc: calcFunc
};
// grey out the legend entry
series[src - 1].color = '#CCCCCC';
} else {
var src = columns[col].sourceColumn;
// show the data series
columns[col] = src;
series[src - 1].color = null;
}
var view = new google.visualization.DataView(data[current]);
view.setColumns(columns);
chart.draw(view, options);
}
google.visualization.events.addListener(chart, 'select', showHideSeries);
google.visualization.events.addListener(chart, 'ready', function() {
button.disabled = false;
});
var view = new google.visualization.DataView(data[current]);
view.setColumns(columns);
chart.draw(view, options);
}
这是jsFiddle:https://jsfiddle.net/sp7atw1L/
编辑:我开始了赏金。鉴于全局变量,也许是间接的做法。我并不反对完成同样事情的直接重构/重做。
答案 0 :(得分:0)
确实,这个bug与注释列有关。在drawChart()
列数组[0,1,{a},2,{a},3,{a}]
之后。
> when column 1 clicked, everything is ok.
> when column 2 clicked, columns[2] is {a}, which in your code is replaced by 1, so, you get another copy of column 1
> when column 3 clicked, columns[3] is 2, so, the wrong row is selected
这些都是后果,但问题在于chart.getSelection()
没有考虑注释列并返回错误的索引。我不确定为什么会发生这种情况,但是如果你在这样的onclick处理程序中绘制DataView(而不是DataTable)
//chart.draw(data[current], options); <-------remove this
var view = new google.visualization.DataView(data[current]);
view.setColumns(columns);// <---make columns global
chart.draw(view, options);
它解决了这个问题。注释的相关问题是例如here
此外,在getData()
行
arr.push(masterLocation['Class' + i]);
应该是
arr.push(masterLocation['Class' + i+1]);