topic divide by 0 in QlikView

divide by 0

pgalvezt — Mon, 01 Aug 2011 18:05:18 GMT

Hi,

I have my pivot table with many expressions. Some of them is calcuated by 0 because for formula. When I have 2 expression calculated for separated don´t give error and the expression shows the 'minus.png' because obviously (number/0). But when did it the same thing with another calculation the result gives nothing, just a blanks. I left an example:

Thanks!!

divide by 0

pgalvezt — Mon, 01 Aug 2011 18:15:01 GMT

I´m Sorry I forgot the values:

328/0.95 = 345,3

0/0 = Blanks

I did this:

IF(count({<AT1}>}(if (InYear (Fecha, Today(), 0), AT1)))/Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX) = ' ', 'qmem://<bundled>/BuiltIn/minus.png',

IF(count({<AT1}>}(if (InYear (Fecha, Today(), 0), AT1)))/Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX) > 0,

(count({<AT1}>}(if (InYear (Fecha, Today(), 0), AT1)))/Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX))))

Thanks.

Re: divide by 0

swuehl — Mon, 01 Aug 2011 19:25:57 GMT

Hi,

well, I am not sure if i got your point:

Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX)

results in 0?

and

count({<AT1}>}(if (InYear (Fecha, Today(), 0), AT1)))/Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX)

gives you a blank?

Well, I am not sure that comparing the above expression to a blank (one or more?) will work. It is better to check the first expression on zero.

I also didn't get your point with

328/0.95 = 345,3

except that there is a mixup of decimal point format (it this just a type?).

Stefan

Re: divide by 0

pgalvezt — Mon, 01 Aug 2011 20:25:05 GMT

Hi, Swuehl thanks for answering, I just to showed you one line. There are many lines in my table with many results distinct that 0. Now the reason bacause gave 0 is due there is no data into the database for that month specificaly. So I have an expression that gave maior that 0 but I have another expression that in sometimes gave 0.

count({<AT1}>}(if (InYear (Fecha, Today(), 0), AT1)))/Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX)

is because no data into the database

Sum( {$<YEAR = {$(#=Max(YEAR))}>} ATX) = 0.

but I did this:

=count({<AT1}>}(if (InYear (Fecha, Today(), -1), AT1)))/if(Sum( {$<YEAR = {$(#=Min(YEAR))}>} ATX) = 0, '0,01',

so all the formulas is divide by 0,01 and no with 0. I don´t know what more to do. now the indicators changed to green.

Thanks Again.

divide by 0

swuehl — Mon, 01 Aug 2011 20:47:51 GMT

So, do you still have a problem or are you satisfied with this solution?

Depending on your business problem, it might be good to check for zero sum first and then calculate the division (if not zero), or use a fixed number like 100% or special expression that is confirm with the requirements of your business logic (or just state like 'n.a.' non available).

Have a nice evening,

Stefan

Re: divide by 0

pgalvezt — Mon, 01 Aug 2011 21:01:00 GMT

For now is better that formula that I put. the message that qlikview live is too long. The manager people don´t like the massage of QlikView for default.

Thanks...