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DateSort changes with data quality/outliers

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Contributor
Posts: 31

DateSort changes with data quality/outliers

Hi All,

Currently I am facing a challenge in my dashboard regarding the date sort.

Please refer to the graph below:

DateSort.png

Idealy the graph should display the dates in order : 26th May, 27th May, 29th May, 30th May, 31st May

but as there is some data quality issue on 29th May, the date is not longer sorted and now order of the dates are: 25th May, 27th May,30th May, 31st may, 29th May.

 

The data quality should not affect the date sorting, but I see the same issue on dates where data is not usual as it should be.

 

Does anyone has faced the same issue before or know why SAS is treating these dates in this way?

 

Thanks!

 

Regards,

Abhi

 

 

 

Grand Advisor
Posts: 10,196

Re: DateSort changes with data quality/outliers

I have see similar behavior when the "dates" are actually text variables and some non-printable character ended up as the first character of the text.

Are your dates SAS date valued variables? What Format is associated with the date variable? 

Contributor
Posts: 31

Re: DateSort changes with data quality/outliers

 

Dates are not text varaibles. I have extracted Date using DatePart from DateTimestamp.

Frequent Contributor
Posts: 121

Re: DateSort changes with data quality/outliers

>Does anyone has faced the same issue before or know why SAS is treating these dates in this way?

 

From what I have seen - it seems to happen when you add the grouped variable.  It's like it wants to sort by the  Y-Axis value, Group Value, and then the X-Axis value.  

 

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Tricia Aanderud
Zencos Consulting
Twitter: @taanderud - Follow me!

Contributor
Posts: 31

Re: DateSort changes with data quality/outliers

Hi Tricia,


 I just tried the same data with exactly same dates on a line chart and to suprise it works good. It seems to be the way the data is interpreted in a bar  and line chart. Can this be a reason?

 

Here is the screenshot:

DateSort_LineChart.png

 

Regards,

Abhi

Frequent Contributor
Posts: 121

Re: DateSort changes with data quality/outliers

Yes - I experience the same thing.

 


Tricia Aanderud
Zencos Consulting
Twitter: @taanderud - Follow me!

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