Dashboards & Visualizations

Change Color of Column in Column Chart Based on Field Value

srewarrior
Explorer

I know someone is going to say this has been answered many times but...I have gone through every example I can find here in the Community and have yet to find something that will work. I have a monitor that runs every 5 minutes to validate a web URL is alive and it records the number of milliseconds for the total response time. My query returns two values _time and total_time for each 5 minute ping. I can use the "pencil" on the right to add color and ranges to the table display but it does not flow into visualization. My search:

index=xxx_website_monitoring sourcetype=web_ping https://my.website.com | stats values(total_time) by _time

The column chart works but I need to make each column Green, Yellow or Red based on the value of total_time like: 

| eval red = if(total_time>=500,total_time,0)

| eval yellow = if(total_time<500 AND total_time>=300,total_time,0)

| eval green = if(total_time<300, total_time, 0)

However, none of the examples I have found work because they expect Func(Expression) or if([bool expr], [expr],  or some other command combination and not just a Field. Here is the chart with the default Blue. total_response on the Y and _time on the X:

 

ColumnCharBlue.JPG

 

Here is an example of what does not work:

index=xxx_website_monitoring sourcetype=web_ping https://my.website.com | stats values(total_time) by _time

| eval red = if(total_time>=500,total_time,0)

| eval yellow = if(total_time<500 AND total_time>=300,total_time,0)

| eval green = if(total_time<300, total_time, 0)

<chart>

      <searchName>URLMonitor</searchName>

      <title>Clarifire URL Response Times</title>

      <option name="charting.chart">column</option>

      <option name="charting.fieldColors">{"red":0xFF0000,"yellow":0xFFFF00, "green":0x73A550}</option>

      <option name="charting.legend.placement">none</option>

      <option name="charting.axisLabelsX.majorLabelStyle.rotation">90</option> 

    </chart>

Error in 'eval' command: Fields cannot be assigned a boolean result. Instead, try if([bool expr], [expr], [expr]).

Labels (1)
0 Karma
1 Solution

srewarrior
Explorer

This last reply worked perfectly. I was able to create chart with the normal theme and with the dark theme. My users will have a choice as to how they want to see the data.

Thank you!! 

View solution in original post

0 Karma

niketn
Legend

@srewarrior if you would notice the series name in Legend of your screenshot, your stats aggregation is changing the field name from total_time to values(total_time). Because of this the field total_time is not available for subsequent eval.

So try changing your search to 

 

index=xxx_website_monitoring sourcetype=web_ping https://my.website.com
| stats values(total_time) as total_time by _time
| eval red = if(total_time>=500,total_time,0)
| eval yellow = if(total_time<500 AND total_time>=300,total_time,0)
| eval green = if(total_time<300, total_time, 0)
| table _time red, yellow, green

Following is a run anywhere example based on the SPL, sample screenshot provided. Please try out and confirm. PS: You would need to replace the run anywhere data generation with your actual index search for SPL to work with your data. 

Screen Shot 2020-07-17 at 11.34.55 PM.png

 

Screen Shot 2020-07-17 at 11.08.57 PM.png

 

<dashboard theme="dark">
  <label>Color By Range</label>
  <row>
    <panel>
      <html>
        <style>
          #total_time_kpi g.highcharts-legend-item text tspan:nth-child(2){
            font-size:110% !important;
            font-weight:bold !important;
            fill:lightgrey !important;
          }
        </style>
      </html>
      <chart id="total_time_kpi">
        <search>
          <query>| makeresults count=288
| eval delta=300
| accum delta
| eval _time=_time-delta
| eval total_time=substr(tostring(random()),1,3), url="https://clarifier238e601.eclarifier.com"
| table _time total_time url
| search url=TERM("https://clarifier238e601.eclarifier.com")
| stats last(total_time) as total_time by _time
| eval redCritical = if((total_time &gt;= 500),total_time ,0)
| eval yellowWarning = if(total_time &gt;=300 AND total_time &lt;500,total_time ,0)
| eval greenOK = if(total_time &lt;300,total_time ,0)
| table _time redCritical,yellowWarning,greenOK</query>
          <earliest>-24h@h</earliest>
          <latest>now</latest>
          <sampleRatio>1</sampleRatio>
        </search>
        <option name="charting.axisLabelsX.majorLabelStyle.overflowMode">ellipsisNone</option>
        <option name="charting.axisLabelsX.majorLabelStyle.rotation">0</option>
        <option name="charting.axisTitleX.visibility">collapsed</option>
        <option name="charting.axisTitleY.visibility">visible</option>
        <option name="charting.axisTitleY2.visibility">visible</option>
        <option name="charting.axisX.abbreviation">none</option>
        <option name="charting.axisX.scale">linear</option>
        <option name="charting.axisY.abbreviation">none</option>
        <option name="charting.axisY.scale">linear</option>
        <option name="charting.axisY2.abbreviation">none</option>
        <option name="charting.axisY2.enabled">0</option>
        <option name="charting.axisY2.scale">inherit</option>
        <option name="charting.chart">area</option>
        <option name="charting.chart.bubbleMaximumSize">50</option>
        <option name="charting.chart.bubbleMinimumSize">10</option>
        <option name="charting.chart.bubbleSizeBy">area</option>
        <option name="charting.chart.nullValueMode">gaps</option>
        <option name="charting.chart.showDataLabels">none</option>
        <option name="charting.chart.sliceCollapsingThreshold">0.01</option>
        <option name="charting.chart.stackMode">stacked</option>
        <option name="charting.chart.style">shiny</option>
        <option name="charting.drilldown">none</option>
        <option name="charting.fieldColors">{"redCritical":"#DC4E41","yellowWarning":"#F8BE34","greenOK":"#5CC05C"}</option>
        <option name="charting.layout.splitSeries">0</option>
        <option name="charting.layout.splitSeries.allowIndependentYRanges">0</option>
        <option name="charting.legend.labelStyle.overflowMode">ellipsisMiddle</option>
        <option name="charting.legend.mode">seriesCompare</option>
        <option name="charting.legend.placement">right</option>
        <option name="charting.lineWidth">2</option>
        <option name="trellis.enabled">0</option>
        <option name="trellis.scales.shared">1</option>
        <option name="trellis.size">medium</option>
      </chart>
    </panel>
  </row>
</dashboard>
____________________________________________
| makeresults | eval message= "Happy Splunking!!!"

srewarrior
Explorer

This last reply worked perfectly. I was able to create chart with the normal theme and with the dark theme. My users will have a choice as to how they want to see the data.

Thank you!! 

0 Karma

niketn
Legend

@srewarrior Glad your customers have more options. Seems like you Accepted your own answer instead of mine posted above! Kindly correct 🙂

____________________________________________
| makeresults | eval message= "Happy Splunking!!!"
0 Karma

to4kawa
Ultra Champion

sample:

index=_internal
| timechart count
| eval status=case(count>100," >100",count>10,"100-10",1=1,"10>")
| chart values(count) as count by _time status

How about doing something like this? 

0 Karma

srewarrior
Explorer

This is the problem I have with all the examples so far. Unless I am missing something, I am not  count'ing anything. I am not avg'ing. I am not using any function. I simply want to take value in total_response (response time in milliseconds) and graph it in the appropriate color. I am new to Splunk but it seems like a fairly simple task. I have time and response time every five minutes. Nothing super fancy and complicated. I can't believe that no one has thought of this simplistic use case before me. I want my dashboard users to see yellow and red columns for each occurrence when response time hits the appropriate thresholds. 

Tags (2)
0 Karma
Get Updates on the Splunk Community!

What's New in Splunk Cloud Platform 9.2.2403?

Hi Splunky people! We are excited to share the newest updates in Splunk Cloud Platform 9.2.2403! Analysts can ...

Stay Connected: Your Guide to July and August Tech Talks, Office Hours, and Webinars!

Dive into our sizzling summer lineup for July and August Community Office Hours and Tech Talks. Scroll down to ...

Edge Processor Scaling, Energy & Manufacturing Use Cases, and More New Articles on ...

Splunk Lantern is a Splunk customer success center that provides advice from Splunk experts on valuable data ...