# Bar Chart 2 decimals

**URL:** <https://discourse.nodered.org/t/bar-chart-2-decimals/51843>\
**Category:** Dashboard\
**Created:** [4 October 2021 15:47 UTC](https://discourse.nodered.org/t/bar-chart-2-decimals/51843 "2021-10-04T15:47:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mrous](https://avatars.discourse-cdn.com/v4/letter/m/3d9bf3/32.png) [@Mrous](https://discourse.nodered.org/u/Mrous)\
**Post date:** [4 October 2021 15:47 UTC](https://discourse.nodered.org/t/bar-chart-2-decimals/51843/1 "2021-10-04T15:47:09Z")

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Hi,  
I made a bar chart with this data. And I would like to have the value CUMULWATT with only 2 decimals.  
Here is my code, but it doesn't work ..

**Edit Function Node**

var m = {};  
m.labels = ;  
m.data = ;  
m.series = ["Euros"];  
var arrayLength = msg.payload.length;  
for (var i = 0; i \< arrayLength; i++) {  
m.labels.push((msg.payload[i].fecha3));  
m.data.push(msg.payload[i].CUMULWATT\*0.00018).toFixed(2);  
}  
return {payload:[m],topic:msg.topic};

Thank you

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<div class="post-metadata">

**Author:** ![Andrei](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/andrei/32/10446_2.png) [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Post date:** [4 October 2021 16:10 UTC](https://discourse.nodered.org/t/bar-chart-2-decimals/51843/2 "2021-10-04T16:10:24Z")

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I understand that value.toFixed(2) will give you a string. As you want to get a number probably you have to convert the result to float again. Something like  
`parseFloat(value.toFixed(2))`. I can´t test right now though.

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<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [4 October 2021 16:15 UTC](https://discourse.nodered.org/t/bar-chart-2-decimals/51843/3 "2021-10-04T16:15:56Z")

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> [@Mrous](#):
>
> m.data.push(msg.payload[i].CUMULWATT\*0.00018).toFixed(2)

You would be converting the length of the array you just pushed to. As push will return the array length.

The toFixed needs to be inside the push ( ). Would probably be better to use `Math.round()`

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [3 November 2021 16:16 UTC](https://discourse.nodered.org/t/bar-chart-2-decimals/51843/4 "2021-11-03T16:16:17Z")

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