Support for a missing data value in line chart

[chartjs]

Support for a missing data value in line chart

[davidblurton]

I also have this issue.

[timclipsham]

+1 this would be great to have!

[thibault]

I tried to replace some value by NaN, but it didn't work. This would definitly be useful.

[djogopatrao]

+1 - it would be extremely useful!

[achudars]

+1

[linagee]

+1

[warksit]

This would be great

[linagee]

You can just make it skip over doing the drawing iteration for that line if its null. (Took me forever to find where its doing the line drawing.) The way it works before this is it will interpret null as zero.

822: for (var j=1; j<data.datasets[i].data.length; j++){
if (!data.datasets[i].data[j]) { continue; }
823: if (config.bezierCurve){

845: for (var k=0; k<data.datasets[i].data.length; k++){
if (!data.datasets[i].data[k]) { continue; }
846: ctx.beginPath();

[FVANCOP]

The proposed solution by Linagee has some problems (curve and filling are not correct; solution not valid when the first value is missing).

In the alternate version that you will find at https://github.com/FVANCOP/ChartNew.js, I have implemented a solution that is more accurate. This version is down compatible with Nick's version.

Sample data that works in the alternate version :

var mydata1 = {
labels : ["January","February","March","April","May","June","July"],
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
pointColor : "rgba(220,220,220,1)",
pointStrokeColor : "#fff",
data : [0.65,0.59,0.90,0.81,0.56,0.55,1.00],
title : "pFirst data"
},
{
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
pointColor : "rgba(151,187,205,1)",
pointStrokeColor : "#fff",
data : [,0.34,,"0.19",0.96,0.27,],
title : "pSecond data"
}
]
}

The alternate version also support negative values (which is not the case in Nick's version).

[turbobuilt]

Would also like to see this feature in the main Chartjs. The new Chartjs has some nice new features. Both together would be great.

[Aelios]

+1

[nnnick]

Being worked on here: #435

Closing this as duplicate of this.