List Box & Bar Chart Expression Not Linked

[#1]

Hello,

I'm in need of some help with controlling a Bar Chart with a List Box. I'm trying to get a Bar Chart with 3 separate bars, one for each group as can be seen in the List Box breakdown below. What I would like to happen is to select one or more of the 3 values in the list box (North America, EMEA or Asia & Others) and have the corresponding bar appear/disappear depending on what is selected. There seems to be a disconnect between the expression as a field in the List Box and the corresponding expressions in the Bar Chart. Regardless of what is selected in the List Box, the Bar Chart remains the same showing all 3 bars. The only item that reacts to the List Box selection is the simple expression "count(WRLD_RGN)" which counts all values and puts them into 1 bar instead of breaks them into separate bars as I would like. This is not what I want, but I wanted to see if anything reacted to the list box so this was just a test bar of sorts. Any help is appreciated!

My List Box has the following expression as a field in order to group the actual field values:

=if(WRLD_RGN='Lat.Amer','North America'

,if(WRLD_RGN='N.Amer','North America'

,if(WRLD_RGN='Caribbean','North America'

,if(WRLD_RGN='Africa','EMEA'

,if(WRLD_RGN='E.Eur','EMEA'

,if(WRLD_RGN='Europe','EMEA'

,if(WRLD_RGN='MiddleEast','EMEA'

,if(WRLD_RGN='Oceania','Asia & Others'

,if(WRLD_RGN='Supra','Asia & Others'

,if(WRLD_RGN='Asia','Asia & Others'

,if(WRLD_RGN='OffShore','Asia & Others'

,if(WRLD_RGN='India','Asia & Others'))))))))))))

My Bar Chart as the following expressions:

count({<WRLD_RGN={'Oceania','Supra','Asia','OffShore','India'}>} WRLD_RGN)

count({<WRLD_RGN={'Africa','E.Eur','Europe','MiddleEast'}>} WRLD_RGN)

count({<WRLD_RGN={'Lat.Amer','N.Amer','Caribbean'}>} WRLD_RGN)

count(WRLD_RGN)

and the following dimension which is irrelevant in my mind: LT_RTNG

[swuehl · Accepted solution]

I think your list box and bar chart is connected very well, but you set a new selection to WRLD_RGN in your set expression, so the actual selection in your list box is not taken into account.

add a WRLD_RGN * to the assignment to WRLD_RGN just after the equal sign (or use *=), like in

=count({<WRLD_RGN=WRLD_RGN*{'Oceania','Supra','Asia','OffShore','India'}>} WRLD_RGN)

This should do the trick.

Stefan

edit:

you might also consider using a separate table to link your regions to your classification maybe like

LOAD * INLINE [

WRLD_RGN, SALESREGION

Lat.Amer,North America

N.Amer,North America

Caribbean,North America

Africa,EMEA

E.Eur,EMEA

Europe,EMEA

MiddleEast,EMEA

Oceania,'Asia & Others'

Supra,'Asia & Others'

Asia,'Asia & Others'

OffShore,'Asia & Others'

India,'Asia & Others'

];

Then you could use SALESREGION as a listbox as well as a dimension field in your chart.

[#3]

Thanks Stefan, that was it!