First time using Chart.js and I cannot find an example with the whole code to review. I have the following data for 3 months to chart:
第一次使用Chart.js,我找不到要查看整个代码的示例。我有以下3个月的数据来图表:
Project hours billed, Project hours not billed (stacked bar, for each month)
Billed Amount, To Be Billed amount (stacked bar for each month)
I want to stack the hours and also the billing totals, and want two Y axis, one for hours, the other for dollars.
我想要计算小时数和计费总额,并且想要两个Y轴,一个是小时,另一个是美元。
I have got as far as this code, but it does not stack the hours or the invoiced amounts for each month. Also, I cannot seem to format either axis and the values in the labels to time and currency.
我已经得到了这个代码,但它没有堆积每个月的小时数或发票金额。此外,我似乎无法格式化任何轴和标签中的时间和货币值。
Is there an example you can point me to showing this. Thanks!
有没有一个例子可以指出我展示这个。谢谢!
var barChartData = {
labels: ["January", "February", "March"],
datasets: [{
type: 'bar',
label: 'Billed Hours',
backgroundColor: "rgba(220,220,220,0.5)",
yAxisID: "y-axis-1",
data: [33.56, 68.45, 79.35]
}, {
type: 'bar',
label: 'Non Billed Hours',
backgroundColor: "rgba(222,220,220,0.5)",
yAxisID: "y-axis-1",
data: [3.50, 8.58, 7.53]
}, {
type: 'bar',
label: 'Income',
backgroundColor: "rgba(151,187,205,0.5)",
yAxisID: "y-axis-2",
data: [3800.00, 7565.65, 8500.96]
}, {
type: 'bar',
label: 'Income',
backgroundColor: "rgba(155,187,205,0.5)",
yAxisID: "y-axis-2",
data: [320.00, 780.65, 850.96]
}]
};
var ctx = document.getElementById("projectHours").getContext("2d");
window.myBar = new Chart(ctx, {
type: 'bar',
data: barChartData,
options: {
responsive: true,
hoverMode: 'label',
hoverAnimationDuration: 400,
stacked: true,
title: {
display: true,
text: "Billed / Billable Project Summary"
},
scales: {
yAxes: [{
type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
display: true,
position: "left",
id: "y-axis-1",
}, {
type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
display: true,
position: "right",
id: "y-axis-2",
gridLines: {
drawOnChartArea: false
},
}],
},
animation: {
onComplete: function () {
var ctx = this.chart.ctx;
ctx.textAlign = "center";
Chart.helpers.each(this.data.datasets.forEach(function (dataset) {
Chart.helpers.each(dataset.metaData.forEach(function (bar, index) {
ctx.fillText(dataset.data[index], bar._model.x, bar._model.y - 10);
}),this)
}),this);
}
}
}
});
1 个解决方案
#1
0
You can extend the bar
chart to do this
您可以扩展条形图来执行此操作
Preview
Script
Chart.defaults.groupableBar = Chart.helpers.clone(Chart.defaults.bar);
var helpers = Chart.helpers;
Chart.controllers.groupableBar = Chart.controllers.bar.extend({
calculateBarX: function (index, datasetIndex) {
// position the bars based on the stack index
var stackIndex = this.getMeta().stackIndex;
return Chart.controllers.bar.prototype.calculateBarX.apply(this, [index, stackIndex]);
},
// hide preceding datasets in groups other than the one we are in
hideOtherStacks: function (datasetIndex) {
var meta = this.getMeta();
var stackIndex = meta.stackIndex;
this.hiddens = [];
for (var i = 0; i < datasetIndex; i++) {
var dsMeta = this.chart.getDatasetMeta(i);
if (dsMeta.stackIndex !== stackIndex) {
this.hiddens.push(dsMeta.hidden);
dsMeta.hidden = true;
}
}
},
// reverse hideOtherStacks
unhideOtherStacks: function (datasetIndex) {
var meta = this.getMeta();
var stackIndex = meta.stackIndex;
for (var i = 0; i < datasetIndex; i++) {
var dsMeta = this.chart.getDatasetMeta(i);
if (dsMeta.stackIndex !== stackIndex) {
dsMeta.hidden = this.hiddens.unshift();
}
}
},
// we hide preceding datasets in groups other than the one we are in
// we then rely on the normal stacked logic to do its magic
calculateBarY: function (index, datasetIndex) {
this.hideOtherStacks(datasetIndex);
var barY = Chart.controllers.bar.prototype.calculateBarY.apply(this, [index, datasetIndex]);
this.unhideOtherStacks(datasetIndex);
return barY;
},
// similar to calculateBarY
calculateBarBase: function (datasetIndex, index) {
this.hideOtherStacks(datasetIndex);
var barBase = Chart.controllers.bar.prototype.calculateBarBase.apply(this, [datasetIndex, index]);
this.unhideOtherStacks(datasetIndex);
return barBase;
},
getBarCount: function () {
var stacks = [];
// put the stack index in the dataset meta
Chart.helpers.each(this.chart.data.datasets, function (dataset, datasetIndex) {
var meta = this.chart.getDatasetMeta(datasetIndex);
if (meta.bar && this.chart.isDatasetVisible(datasetIndex)) {
var stackIndex = stacks.indexOf(dataset.stack);
if (stackIndex === -1) {
stackIndex = stacks.length;
stacks.push(dataset.stack);
}
meta.stackIndex = stackIndex;
}
}, this);
this.getMeta().stacks = stacks;
return stacks.length;
},
});
and then
...
type: 'groupableBar',
options: {
scales: {
yAxes: [{
ticks: {
// we have to set this manually (or we could calculate it from our input data)
max: 160,
},
stacked: true,
}]
}
}
});
Note that we don't have any logic to set the y axis limits, we just hard code it. If you leave it unspecified, you'll end up with the limits you get if all the bars were stacked in one group.
请注意,我们没有任何逻辑来设置y轴限制,我们只需对其进行硬编码。如果您未指定,如果所有条形图都堆叠在一个组中,您将获得限制。
Fiddle - http://jsfiddle.net/4rjge8sk/
小提琴 - http://jsfiddle.net/4rjge8sk/
#1
0
You can extend the bar
chart to do this
您可以扩展条形图来执行此操作
Preview
Script
Chart.defaults.groupableBar = Chart.helpers.clone(Chart.defaults.bar);
var helpers = Chart.helpers;
Chart.controllers.groupableBar = Chart.controllers.bar.extend({
calculateBarX: function (index, datasetIndex) {
// position the bars based on the stack index
var stackIndex = this.getMeta().stackIndex;
return Chart.controllers.bar.prototype.calculateBarX.apply(this, [index, stackIndex]);
},
// hide preceding datasets in groups other than the one we are in
hideOtherStacks: function (datasetIndex) {
var meta = this.getMeta();
var stackIndex = meta.stackIndex;
this.hiddens = [];
for (var i = 0; i < datasetIndex; i++) {
var dsMeta = this.chart.getDatasetMeta(i);
if (dsMeta.stackIndex !== stackIndex) {
this.hiddens.push(dsMeta.hidden);
dsMeta.hidden = true;
}
}
},
// reverse hideOtherStacks
unhideOtherStacks: function (datasetIndex) {
var meta = this.getMeta();
var stackIndex = meta.stackIndex;
for (var i = 0; i < datasetIndex; i++) {
var dsMeta = this.chart.getDatasetMeta(i);
if (dsMeta.stackIndex !== stackIndex) {
dsMeta.hidden = this.hiddens.unshift();
}
}
},
// we hide preceding datasets in groups other than the one we are in
// we then rely on the normal stacked logic to do its magic
calculateBarY: function (index, datasetIndex) {
this.hideOtherStacks(datasetIndex);
var barY = Chart.controllers.bar.prototype.calculateBarY.apply(this, [index, datasetIndex]);
this.unhideOtherStacks(datasetIndex);
return barY;
},
// similar to calculateBarY
calculateBarBase: function (datasetIndex, index) {
this.hideOtherStacks(datasetIndex);
var barBase = Chart.controllers.bar.prototype.calculateBarBase.apply(this, [datasetIndex, index]);
this.unhideOtherStacks(datasetIndex);
return barBase;
},
getBarCount: function () {
var stacks = [];
// put the stack index in the dataset meta
Chart.helpers.each(this.chart.data.datasets, function (dataset, datasetIndex) {
var meta = this.chart.getDatasetMeta(datasetIndex);
if (meta.bar && this.chart.isDatasetVisible(datasetIndex)) {
var stackIndex = stacks.indexOf(dataset.stack);
if (stackIndex === -1) {
stackIndex = stacks.length;
stacks.push(dataset.stack);
}
meta.stackIndex = stackIndex;
}
}, this);
this.getMeta().stacks = stacks;
return stacks.length;
},
});
and then
...
type: 'groupableBar',
options: {
scales: {
yAxes: [{
ticks: {
// we have to set this manually (or we could calculate it from our input data)
max: 160,
},
stacked: true,
}]
}
}
});
Note that we don't have any logic to set the y axis limits, we just hard code it. If you leave it unspecified, you'll end up with the limits you get if all the bars were stacked in one group.
请注意,我们没有任何逻辑来设置y轴限制,我们只需对其进行硬编码。如果您未指定,如果所有条形图都堆叠在一个组中,您将获得限制。
Fiddle - http://jsfiddle.net/4rjge8sk/
小提琴 - http://jsfiddle.net/4rjge8sk/