Offset in Waterfall Chart

[#1]

Hi!

In waterfall chart the offset is defined as follows:

= if (GetSelectedCount(Phase_Level_Txt) = 1, 0,

  if (rowno(total) = 1, 0,top(total Counter)- rangesum((top(total Counter,2,rowno(total)))))

)

Can anybody please explain what it does and how it positions the columns?

In particular I am interested in this part of the code:

rangesum((top(total Counter,2,rowno(total))))

EDIT:

The probelem does not seem to be the OFFSET, because it seems it calculates it correctly.

However, I can't find explanation why the chart positions first 5 (6) columns correctly, and then inserts the gaps between the two last columns taht have values 501 and 2 respectively. (please look at the picture below)

Regards!

D.

[vgutkovsky]

Try changing it to this (assuming your actual expression is named Counter):

if (GetSelectedCount(Phase_Level_Txt) = 1,

       0,

       if(rowno(total)<>1,top(total Counter),0) - rangesum(above(total Counter,0,rowno(total)-1))

)

Regards,

Vlad

[#3]

Hi Vlad!

Thanks for your reply.
However, the chart stayed exactly the same.

The confusing is - the offset is apparently calculated ok (according to the table seen in the picture above).
I don't get why then the chart inserts two gaps ONLY between two last elements.

Moreover, it seems that all other elements (red bars) are ok positioned...

Regards,

D.

[#4]

Hi Vlad,

I have noticed also the following:

First row (Cancelld_YN = 'N') is the starting column in the waterfall chart (bar height 6439). Here the hight is ok (6493).

In the last two column in the picture I have separated the offset expressions as follows:

Column (if(rowno() = 2...) calculates like this: top(total Counter)

Column (rangesum_1) as this: rangesum((top(total Counter,2,rowno(total))))

Here I notice that the rangesum_1 column does not calculate correctly. It should calculate the values in the following order: 40, 77, 80, 117, ...  So the problem should be here.

[vgutkovsky]

Dragan, update your rangesum_1 column to use what I pasted above and repost updated screenshots.

Vlad