我正在 Google Charts 中创建一个柱形图,并且还想创建一个表格图表,显示基于列值的摘要数据,即。平均值、最小值、最大值、总计。
我已在drawchart函数外部将它们声明为全局变量(初始化为0),并在drawchart函数内分配了值(不带var):
function drawPower() {
$.get("costs_daily.csv", function(csvString) {
// transform the CSV string into a 2-dimensional array
var arrayData = $.csv.toArrays(csvString, {onParseValue: $.csv.hooks.castToScalar});
// this new DataTable object holds all the data
var data = new google.visualization.arrayToDataTable(arrayData);
/// get min, max cost
var range = data.getColumnRange(3);
var n_rows = data.getNumberOfRows();
function getSum(data, row) {
var total = 0;
for (i = 0; i < n_rows; i++)
total = total + data.getValue(i, row);
return total;
}
totCost = getSum(data, 3);
aveCost = totCost / n_rows;
minCost = range.min;
maxCost = range.max;
var options = {
title: 'Costs for last 30 days',
titleTextStyle: {color: 'grey', fontSize: 16},
hAxis: {title: 'Date', titleTextStyle: {bold: false, italic: false, color: 'grey'}, slantedTextAngle: 90, textStyle: {fontSize: 12}},
legend: {position: 'top'},
vAxes: {
0: {title: 'Cost (p)', titleTextStyle: {bold: false, italic: false, color: 'grey'}},
},
focusTarget: 'category',
intervals: {color:'#000000',
textStyle: { color: 'none'}},
series: {
0: {color: '#44AA99', type: 'bars'},
1: {color: '#DDCC77', type: 'bars'},
2: {
color: 'transparent',
type: 'line',
lineWidth: 0,
pointSize: 0,
enableInteractivity: false,
visibleInLegend: false
}
},
interpolateNulls: true,
bar: { groupWidth: '75%' },
isStacked: true,
};
var formatter = new google.visualization.NumberFormat(
{prefix: '£', fractionDigits: 2}
);
formatter.format(data,1);
formatter.format(data,2);
formatter.format(data,3);
var chart = new google.visualization.ComboChart(document.getElementById('power_div'));
chart.draw(data, options);
},'text');
}
然后我创建了一个单独的函数来绘制包含这些值的表格:
function drawTable() {
statsData = [
['Stat', 'Cost'],
['Average', aveCost],
['Minimum', minCost],
['Maximum', maxCost],
['Total', totCost]
];
var stats = new google.visualization.arrayToDataTable(statsData);
var options = {
showRowNumber: false,
width: '100%',
height: '100%'
};
var formatter = new google.visualization.NumberFormat(
{prefix: '£', fractionDigits: 2}
);
formatter.format(stats,1);
var table = new google.visualization.Table(document.getElementById('table_div'));
table.draw(stats, options);
}
但这些值仍保持其初始值(零)。有没有办法将计算值从图表函数传递到表格函数?
最佳答案
不确定从现在开始在哪里调用 drawTable
,
但是,是的,您可以将图表函数中的值传递到表函数。
在图表函数中创建statsData
,
然后将其传递给表函数。
并删除当前正在调用表函数的位置。
totCost = getSum(data, 3);
aveCost = totCost / n_rows;
minCost = range.min;
maxCost = range.max;
statsData = [
['Stat', 'Cost'],
['Average', aveCost],
['Minimum', minCost],
['Maximum', maxCost],
['Total', totCost]
];
drawTable(statsData);
...
function drawTable(statsData) {
...
请参阅以下代码片段...
函数绘制功率(){
$.get("costs_daily.csv", function(csvString) {
//将 CSV 字符串转换为二维数组
var arrayData = $.csv.toArrays(csvString, {onParseValue: $.csv.hooks.castToScalar});
// this new DataTable object holds all the data
var data = new google.visualization.arrayToDataTable(arrayData);
/// get min, max cost
var range = data.getColumnRange(3);
var n_rows = data.getNumberOfRows();
function getSum(data, row) {
var total = 0;
for (i = 0; i < n_rows; i++)
total = total + data.getValue(i, row);
return total;
}
totCost = getSum(data, 3);
aveCost = totCost / n_rows;
minCost = range.min;
maxCost = range.max;
statsData = [
['Stat', 'Cost'],
['Average', aveCost],
['Minimum', minCost],
['Maximum', maxCost],
['Total', totCost]
];
drawTable(statsData);
var options = {
title: 'Costs for last 30 days',
titleTextStyle: {color: 'grey', fontSize: 16},
hAxis: {title: 'Date', titleTextStyle: {bold: false, italic: false, color: 'grey'}, slantedTextAngle: 90, textStyle: {fontSize: 12}},
legend: {position: 'top'},
vAxes: {
0: {title: 'Cost (p)', titleTextStyle: {bold: false, italic: false, color: 'grey'}},
},
focusTarget: 'category',
intervals: {color:'#000000',
textStyle: { color: 'none'}},
series: {
0: {color: '#44AA99', type: 'bars'},
1: {color: '#DDCC77', type: 'bars'},
2: {
color: 'transparent',
type: 'line',
lineWidth: 0,
pointSize: 0,
enableInteractivity: false,
visibleInLegend: false
}
},
interpolateNulls: true,
bar: { groupWidth: '75%' },
isStacked: true,
};
var formatter = new google.visualization.NumberFormat(
{prefix: '£', fractionDigits: 2}
);
formatter.format(data,1);
formatter.format(data,2);
formatter.format(data,3);
var chart = new google.visualization.ComboChart(document.getElementById('power_div'));
chart.draw(data, options);
},'text');
}
function drawTable(statsData) {
var stats = new google.visualization.arrayToDataTable(statsData);
var options = {
showRowNumber: false,
width: '100%',
height: '100%'
};
var formatter = new google.visualization.NumberFormat(
{prefix: '£', fractionDigits: 2}
);
formatter.format(stats,1);
var table = new google.visualization.Table(document.getElementById('table_div'));
table.draw(stats, options);
}
关于javascript - 从 Google Charts 中的柱形图创建汇总表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60178289/