I want to build a line graph, and I have missing dates in my data. I would like to get value 0 for the missing dates.
With the option 'Show Missing values', all dates are shown in the graph. But the missing dates do not have any values but they appear and the line passes over them.
Values for missing dates are not real NULLs. And therefore, I can not use functions like IFNULL or ZN to transform NULL values to 0, because it is not a real NULL. Do you know how to solve the problem?
Thank you!
Create a calculated field for measures in your graph:
IF [Dates]=NULL THEN 0 ELSE [Measure]
Use this calculated field instead the original measure.
Use the below calculated field and then click on date field pill and choose the option "show missing values"
ZN(SUM([Amount])) * (IIF(INDEX()>0 ,1, 1))
Related
Im new on Tableau Desktop.
I was starting to import data from a csv. file.
Some columns don't display decimal number, but instead, null value.
And I check, format is the good one (number with decimal).
In my csv. file, I can see my column with values :
And in Tableau :
Sometimes, data appears and sometimes not, that's weird.
So, What option do i choose ?
Thanks in advance.
Your data range is the issue here. You can right click on the Y-axis and edit the axis
I am attempting to use the ZN() function to detect any NULL values, but the measures I need to use are categorical.
They can either only hold one of two values (Valid or Invalid) or be blank.
Is it possible for Tableau to treat these categorical values as numerical?
My first thought was to use a factorisation-type function, like the one in R, but I am not aware of any such function in Tableau.
Can this be achieved?
Create calculated field with following formula
CASE [YOUR_FIELD]
WHEN NULL THEN 0
WHEN 'Invalid' THEN 1
ELSE 2 END
I've been ripping my hear out trying to figure out why this is happening, any help would be very much appreciated!
I'm trying to divide the result of a calculated field by another calculated field in order to get a percentage ("X% of transactions were at or below SLA" essentially). Not sure if the problem is how I'm calculating the two fields, or this new calculation I'm using.
Here is the calculation I'm using: sum([CALC1]) / ([CALC2]) --I'm getting a result of 1 using this, but am expecting something like .982.
CALC1: IF [Total Time (seconds)] > 180 THEN 1 ELSE 0 END
CALC2: COUNT([Trans Id])
I thought it would make sense to add this in the answers portion, even though the correct answer is listed in the comments.
The issue is with how you are displaying the answer. Right click on the measure in the left hand pane and scroll down to "default properties". Go to "Number format" and adjust to the desired number of decimal places.
I have a text file with two columns: "date" and "cumulative value". I'd like to difference "cumulative value", as a calculated field in the data source.
I cannot even get a lag value:lookup([cumulative value],-1) produces an error.
Thank you.
There are two things you can do.
Create a new field with the following formula:
SUM([cumulative value])-LOOKUP(SUM([cumulative value]),-1)
Tableau requires an aggregation for you to use the LOOKUP function. Hence why I used the sum function. Then you could plot that against DAY(Date).
OR
Plot DAY(Date) against SUM(cumulative value), then right click SUM(cumulative value), click Quick Table Calculation, and then Difference. This can only be used/done in plots though.
I have a datetime series in Highcharts. The incoming data has some missing dates. Highcharts, by default, interpolates for those missing dates. I want it to interpret as if the data for those dates is 0. One way, obviously, is to add null data for these dates in my input data to Highcharts. Is there a better way to do this?
You need to set ordinal parameter as false.
You could set connectNulls to false. This will cause a break to appear in the line (if you are using a line).