Yes, the problem is because when the histogram encounters buckets with no data 
it assumes zero values instead of joining the points between the 2 interval.

I solved it by using a different kibana version, I effectively found 2 patches 
one with a zero-fill checkbox and another one with an option box. I found just 
one of them:

https://github.com/elasticsearch/kibana/issues/741

 

Both versions solve the problem.

 

That’s the way I solved it.

 

Hope that helps

 

/Itzhak

 

From: [email protected] [mailto:[email protected]] On 
Behalf Of Xwilly Azel
Sent: Thursday, March 20, 2014 9:12 AM
To: [email protected]
Subject: Re: Kibana Histogram unexpected line curve with cumulative value

 

I've got the same kind of issue.

 

Did you find a solution ?

On Monday, March 10, 2014 3:58:21 PM UTC+1, Isaac Hazan wrote:

Kibana cannot do a the Histogram of the cumulative value of a field as describe 
at: <https://github.com/elasticsearch/kibana/issues/740> 
https://github.com/elasticsearch/kibana/issues/740

To overcome that I created a separate index where I calculate myself the total 
and saved it to Elasticsearch.

The mapping looks as follows:

curl -XPOST localhost:9200/first_install -d '{
    "settings" : {
        "number_of_shards" : 5
    },
    "mappings" : {
        "fi" : {
            "properties" : {
                "evtTime" : { "type" : "date", "index": "not_analyzed", 
"format": "dd/MMM/yyyy:HH:mm:ss" },
                "cumulativeValue" : { "type" : "integer", "index": 
"not_analyzed" }
            }
        }
    }
}'

The values are saved properly but unexpectedly Kibana does not draw the line i 
would expect, instead it joins between point that do not exist.

Following is the Kibana sreenshot:

The line curve should always be increasing since my data set is always 
increasing, that i can prove by the following events as seen by kibana itself:

Could it be related to the data formatting I did?

Thx in advance.

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