Hi Chris Thanks for the clarification.
My Doubt:* You said: so if the range of legal values is 0-100, and you care about 10-20 sort=map(map(myNumField,0,10,0),20,100,0) desc, score desc sort=map(map(myNumField,0,10,100),20,100,100) asc, score desc * By doing the first one, I got results with "myNumField" values between 10 and 20 ranked above all, in the descending order - 20, 18, 17, 13 etc. By doing the second one, I expected to get the same results, ordered like 13, 17,18, 20. But, what I got were other values as results, that are not in the chosen range: 9, 8,7, 5 etc. My question previously was: How to get results with "myNumFields" values between 10 and 20 ranked above the rest, in the ascending order. Regards Sowmya. On Tue, Aug 23, 2011 at 7:48 PM, Chris Hostetter <hossman_luc...@fucit.org>wrote: > > : I did not quite understand how that function was made. But, it does work > > basically the "map" function just translates values in a ranage to some > fixed vald value. so if you nest two map functions (that use > different ranges) inside of eachother you get a resulting curve that is > flat in those two ranges (below 10 and above 20) and returns the actual > field value in the middle. > > : (I chose a field with 0 and 100 as limits and tried with that. So, > replaced > : infinities with 0 and 100 respectively) > : > : sort=map(map(myNumField,-Infinity,10,0),20,Infinity,0) desc, score desc > : > : If I needed Sorted results in ascending order, Results around the value > 10 > : ranked above those of 20, what should I do in this case? > : > : I tried giving, > : sort=map(map(myNumField,-Infinity,10,0),20,Infinity,0) *asc*, score desc > : But, that does not seem to work quite as I expected. > > Hmmm... ok. FWIW: anytime you say things like "does not seem to work > quite as I expected" ... you really need to explain: a) what you expected. > b) what you got. > > But i think i see the problem... > > if you change to asc, then it's going to sort docs by the result of that > function asc, and because of the map a *lot* of docs are going to have a > value of "0" for that function -- so in addition to changing to "asc" > you'll want to change the target value of that function to something above > the upper endpoint of the range you care about (20 in this example) > > so if the range of legal values is 0-100, and you care about 10-20 > > sort=map(map(myNumField,0,10,0),20,100,0) desc, score desc > sort=map(map(myNumField,0,10,100),20,100,100) asc, score desc > > > > -Hoss > -- Sowmya V.B. ---------------------------------------------------- Losing optimism is blasphemy! http://vbsowmya.wordpress.com ----------------------------------------------------
