Show Different category name in tooltip in spotfire bar chart - tibco

Question

We have a requirement for showing ID in category axis and description of same ID in tooltip.
I have multiple columns in my data like value 1 ,value2,value 3 etc. value 1, value 2 are columns.
I am putting this on value axis as an expression like Sum([value 1]) as [AC 6076 ], Sum([Value 2]) as [AC 6078 ], etc. that is this will hardcoded as IDs in category axis
So my category axis is column names. that is <[Axis.Default.Names]> .
please see the attached picture. It's the description against a column not a row.
It would be an expression in tooltip which may be something like
First(Case when '${Axis.Y.DisplayName}'='AC 6076' then "description 1" when '${Axis.Y.DisplayName}'='AC 6078 ' then "description 2" else " Description 3" end )
This expression is not showing correct value. it wil always show "Descrition 3"
i want to show this IDs(column names in category axis) and a description for each of these column names in tooltip. please have a look at the picture attached.
Atatched picture
Thanks

Answer 1

First(CASE
WHEN '${Axis.Y.DisplayName}'='AC 6076' THEN "description 1"
WHEN '${Axis.Y.DisplayName}'='AC 6078 ' THEN "description 2"
ELSE " Description 3"
END)
this always evaluates to your ELSE condition because ${Axis.Y.DisplayName} will always be the full display name for the axis, not the individual columns (i.e., "AC 6076, AC 6078").
you will need to add your description text to your data somehow. this is a little convoluted and will require some tweaking on your end, but the principle is the same.
this is assuming your table is something like this:
key val1 val2
a 1 4
b 2 5
c 3 6
from the menu, select File..Add Data Tables...
click Add then select the data table powering your visualization from the From Current Analysis heading
expand the Transformations pane at the bottom of this dialog
choose a Pivot transform and click **Add...*
leave everything default except for Transfer columns..., where you should add only the columns you wish to sum (e.g., [value 1] and [value 2])
OPTIONALLY change the naming scheme to just %T
click OK
your table now looks like (ignoring optional steps):
Sum(val1) Sum(val2)
6 15
choose another transform, this time Unpivot, and click **Add...*
add all columns to Columns to transform
click OK
now you have:
Category Value
Sum(val1) 6
Sum(val2) 15
choose one last transform: Calculate new column and click **Add...*
enter your case statement that will determine the description and name the column "Description" or something
click OK
click OK
your final table will resemble:
Category Value Description
Sum(val1) 6 This is the sum of value 1
Sum(val2) 15 This is the sum of value 2
on your bar chart, the category axis expression should be Category and value should be Sum(Value) (assuming you didn't change the column names in step 9)
add a new line to the tooltip with an expression First([Description]), or whatever you named the new column in step 12
whew. it's a lot of steps but it works. the goal is to get the description data into it's own column so you can put it in the tooltip. since your data is aggregated and doesn't exist in its own column, this is the only way I can think of doing it.