Need Help

[#1]

i have to calculate  view for months for this i have to subtract views for priviouse month from current month.

Raw Data:

Type	Jan	Feb	Mar	Apr	May
abc	1000	1060	1120	1180	1240
bca	2000	2040	2080	2120	2160
cab	3000	3070	3140	3210	3280
ghy	4000	4020	4040	4060	4080
ghj	5000	5080	5160	5240	5320
rty	6000	6090	6180	6270	6360
hio	7000	7020	7040	7060	7080
hdo	8000	8010	8020	8030	8040
gft	9000	9025	9050	9075	9100

calculation:

View(Jan)	View(Feb)	View(Mar)	View(Apr)
60	60	60	60
40	40	40	40
70	70	70	70
20	20	20	20
80	80	80	80
90	90	90	90
20	20	20	20
10	10	10	10
25	25	25	25

like for Jan view = Feb-jan

for Feb view= Mar-Feb

...................

Please suggest how to do this at time of loading or in expression in qlikview line chart and table.

[nagaiank]

A sample implementation is attached. Hope this helps.