Apache echart error (Bar chart)

Hi all,
I am trying to use this barchart in my Grafana dashboard.

When I apply the code it says app is not defined. when i declare a variable with name app it shows nothing. how I can over come this. Anybody have idea please share the answer

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Please show us your code?

const posList = [
‘left’,
‘right’,
‘top’,
‘bottom’,
‘inside’,
‘insideTop’,
‘insideLeft’,
‘insideRight’,
‘insideBottom’,
‘insideTopLeft’,
‘insideTopRight’,
‘insideBottomLeft’,
‘insideBottomRight’
];
app.configParameters = {
rotate: {
min: -90,
max: 90
},
align: {
options: {
left: ‘left’,
center: ‘center’,
right: ‘right’
}
},
verticalAlign: {
options: {
top: ‘top’,
middle: ‘middle’,
bottom: ‘bottom’
}
},
position: {
options: posList.reduce(function (map, pos) {
map[pos] = pos;
return map;
}, {})
},
distance: {
min: 0,
max: 100
}
};
app.config = {
rotate: 90,
align: ‘left’,
verticalAlign: ‘middle’,
position: ‘insideBottom’,
distance: 15,
onChange: function () {
const labelOption = {
rotate: app.config.rotate,
align: app.config.align,
verticalAlign: app.config.verticalAlign,
position: app.config.position,
distance: app.config.distance
};
myChart.setOption({
series: [
{
label: labelOption
},
{
label: labelOption
},
{
label: labelOption
},
{
label: labelOption
}
]
});
}
};
const labelOption = {
show: true,
position: app.config.position,
distance: app.config.distance,
align: app.config.align,
verticalAlign: app.config.verticalAlign,
rotate: app.config.rotate,
formatter: ‘{c} {name|{a}}’,
fontSize: 16,
rich: {
name: {}
}
};
option = {
tooltip: {
trigger: ‘axis’,
axisPointer: {
type: ‘shadow’
}
},
legend: {
data: [‘Forest’, ‘Steppe’, ‘Desert’, ‘Wetland’]
},
toolbox: {
show: true,
orient: ‘vertical’,
left: ‘right’,
top: ‘center’,
feature: {
mark: { show: true },
dataView: { show: true, readOnly: false },
magicType: { show: true, type: [‘line’, ‘bar’, ‘stack’] },
restore: { show: true },
saveAsImage: { show: true }
}
},
xAxis: [
{
type: ‘category’,
axisTick: { show: false },
data: [‘2012’, ‘2013’, ‘2014’, ‘2015’, ‘2016’]
}
],
yAxis: [
{
type: ‘value’
}
],
series: [
{
name: ‘Forest’,
type: ‘bar’,
barGap: 0,
label: labelOption,
emphasis: {
focus: ‘series’
},
data: [320, 332, 301, 334, 390]
},
{
name: ‘Steppe’,
type: ‘bar’,
label: labelOption,
emphasis: {
focus: ‘series’
},
data: [220, 182, 191, 234, 290]
},
{
name: ‘Desert’,
type: ‘bar’,
label: labelOption,
emphasis: {
focus: ‘series’
},
data: [150, 232, 201, 154, 190]
},
{
name: ‘Wetland’,
type: ‘bar’,
label: labelOption,
emphasis: {
focus: ‘series’
},
data: [98, 77, 101, 99, 40]
}
]
};

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@yosiasz I just copy the code and try to run it first then i will configure it with actual data

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Did you copy this from an existing apache echart example? If so which one?

1 Like

yes i have copied this from bar label rotation example Here is the link of the example

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Which one, please post link

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Here is the Link

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So yes you do not have app defined so it will error out.

Copy/pasta code issue, it has nothing to do with grafana. Better off posting in the github repo of apache echarts

Watch these series of videos and read their docu

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I have listend this video many times Thanks i will post it in APache Echart github repo thanks a lot for the help

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How comfortable are you with js/typescripr?

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I have intermediate level experience with angularJs.

Angularjs is a framework for building web applications based on js but should somehow help you because it exposes you js. But you will not be using angularjs in apache echarts

So it seems like you are going to have to solidify your js/typesript skill set, well worth it.

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Thanks man will listen to it

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