Mixing
Pie chart not working using angular and ng2-charts
I need to display my users type in a Pie chart.
I am using Angular2, Chart.js and ng2-charts.
dashboard.component.ts:
export class DashboardComponent implements OnInit {
employees = {};
public countFree : number = 0;
public countPaid : number = 0;
public chartData: Array<Object> = ;
public chartLabels: Array<Object> = ;
constructor(private dashboard: DashboardService) { }
ngOnInit() {
this.dashboard.fetchData('http://localhost:8080/employees').subscribe(res => {
res.forEach(function (eachObj) {
if(eachObj.usertype=='Free')
this.countFree++;
else
this.countPaid++;
}.bind(this));
this.chartLabels = ['Paid Users', 'Free Users'];
this.chartData = [{ data: [this.countPaid, this.countFree++] }];
});
}
}
dashboard.component.html:
<div style="width: 40%;">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
I am getting error "TypeError: Cannot read property 'data' of undefined".
If I place the chart code outside the fetchData(), it works fine.
But I need countFree and countPaid to be showed as chart data.
Need someones help.
angular chart.js
asked Nov 19 '18 at 13:24
I.George
437
add a comment |
I need to display my users type in a Pie chart.
I am using Angular2, Chart.js and ng2-charts.
dashboard.component.ts:
export class DashboardComponent implements OnInit {
employees = {};
public countFree : number = 0;
public countPaid : number = 0;
public chartData: Array<Object> = ;
public chartLabels: Array<Object> = ;
constructor(private dashboard: DashboardService) { }
ngOnInit() {
this.dashboard.fetchData('http://localhost:8080/employees').subscribe(res => {
res.forEach(function (eachObj) {
if(eachObj.usertype=='Free')
this.countFree++;
else
this.countPaid++;
}.bind(this));
this.chartLabels = ['Paid Users', 'Free Users'];
this.chartData = [{ data: [this.countPaid, this.countFree++] }];
});
}
}
dashboard.component.html:
<div style="width: 40%;">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
I am getting error "TypeError: Cannot read property 'data' of undefined".
If I place the chart code outside the fetchData(), it works fine.
But I need countFree and countPaid to be showed as chart data.
Need someones help.
angular chart.js
asked Nov 19 '18 at 13:24
I.George
437
add a comment |
I need to display my users type in a Pie chart.
I am using Angular2, Chart.js and ng2-charts.
dashboard.component.ts:
export class DashboardComponent implements OnInit {
employees = {};
public countFree : number = 0;
public countPaid : number = 0;
public chartData: Array<Object> = ;
public chartLabels: Array<Object> = ;
constructor(private dashboard: DashboardService) { }
ngOnInit() {
this.dashboard.fetchData('http://localhost:8080/employees').subscribe(res => {
res.forEach(function (eachObj) {
if(eachObj.usertype=='Free')
this.countFree++;
else
this.countPaid++;
}.bind(this));
this.chartLabels = ['Paid Users', 'Free Users'];
this.chartData = [{ data: [this.countPaid, this.countFree++] }];
});
}
}
dashboard.component.html:
<div style="width: 40%;">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
I am getting error "TypeError: Cannot read property 'data' of undefined".
If I place the chart code outside the fetchData(), it works fine.
But I need countFree and countPaid to be showed as chart data.
Need someones help.
angular chart.js
asked Nov 19 '18 at 13:24
I.George
437
I need to display my users type in a Pie chart.
I am using Angular2, Chart.js and ng2-charts.
dashboard.component.ts:
export class DashboardComponent implements OnInit {
employees = {};
public countFree : number = 0;
public countPaid : number = 0;
public chartData: Array<Object> = ;
public chartLabels: Array<Object> = ;
constructor(private dashboard: DashboardService) { }
ngOnInit() {
this.dashboard.fetchData('http://localhost:8080/employees').subscribe(res => {
res.forEach(function (eachObj) {
if(eachObj.usertype=='Free')
this.countFree++;
else
this.countPaid++;
}.bind(this));
this.chartLabels = ['Paid Users', 'Free Users'];
this.chartData = [{ data: [this.countPaid, this.countFree++] }];
});
}
}
dashboard.component.html:
<div style="width: 40%;">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
I am getting error "TypeError: Cannot read property 'data' of undefined".
If I place the chart code outside the fetchData(), it works fine.
But I need countFree and countPaid to be showed as chart data.
Need someones help.
angular chart.js
angular chart.js
asked Nov 19 '18 at 13:24
I.George
437
asked Nov 19 '18 at 13:24
I.George
437
asked Nov 19 '18 at 13:24
I.George
437
asked Nov 19 '18 at 13:24
I.George
437
asked Nov 19 '18 at 13:24
I.George
437
437
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Might not be the best solution, but you could try this:
<div style="width: 40%;" *ngIf="chartData">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
answered Nov 19 '18 at 14:14
Bm8
82
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Might not be the best solution, but you could try this:
<div style="width: 40%;" *ngIf="chartData">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
answered Nov 19 '18 at 14:14
Bm8
82
add a comment |
Might not be the best solution, but you could try this:
<div style="width: 40%;" *ngIf="chartData">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
answered Nov 19 '18 at 14:14
Bm8
82
add a comment |
Might not be the best solution, but you could try this:
<div style="width: 40%;" *ngIf="chartData">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
answered Nov 19 '18 at 14:14
Bm8
82
Might not be the best solution, but you could try this:
<div style="width: 40%;" *ngIf="chartData">
<canvas
baseChart
[chartType]="'pie'"
[datasets]="chartData"
[labels]="chartLabels"
[options]="chartOptions"
[legend]="true"
</canvas>
</div>
answered Nov 19 '18 at 14:14
Bm8
82
answered Nov 19 '18 at 14:14
Bm8
82
answered Nov 19 '18 at 14:14
Bm8
82
answered Nov 19 '18 at 14:14
Bm8
82
82
add a comment |
add a comment |
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