Re: [WebDNA] Range calculation w/negative values
This WebDNA talk-list message is from 2011
It keeps the original formatting.
numero = 107672
interpreted = N
texte = > Haven't posted to this list in ages, but every so often you run into = something... Doing a range calculation as part of a distance search = based on ZIP code (aka Great Circle calculation). For whatever reason, I = can't get the search to work on negative values, and the longitude of = every city in the U.S. is expressed as a negative value. Using WebCat = 5.1e on an old Mac mini G4. >=20 > This is the basic search, actually comes from something another = individual on the list posted years ago: >=20 > [search = db=3Dzipcodes.db&rnLATdatarq=3D[lowLat],[hiLat]&rnLONGdatarq=3D[lowLong],[= hiLong]&LATtype=3Dnum&LONGtype=3Dnum&asZIPsort=3D1] >=20 > The [lowLong]and [hiLong] values are negative as well. If I remove the = entire longitude section the search works fine. And if I change the = values in the db for longitude to positive, the search works, but that = just seems wrong... >=20 > zipcodes.db > zip city state lat long > 00501 HOLTSVILLE NY 40.81 -73.04 Hi Gil Have you tried using the 'ge' and 'le' (or 'gr' and 'ls') comparison = operators (if I said that right)? ... instead of the 'rn' operator. -G=
Associated Messages, from the most recent to the oldest:
> Haven't posted to this list in ages, but every so often you run into = something... Doing a range calculation as part of a distance search = based on ZIP code (aka Great Circle calculation). For whatever reason, I = can't get the search to work on negative values, and the longitude of = every city in the U.S. is expressed as a negative value. Using WebCat = 5.1e on an old Mac mini G4. >=20 > This is the basic search, actually comes from something another = individual on the list posted years ago: >=20 > [search = db=3Dzipcodes.db&rnLATdatarq=3D[lowLat],[hiLat]&rnLONGdatarq=3D[lowLong],[= hiLong]&LATtype=3Dnum&LONGtype=3Dnum&asZIPsort=3D1] >=20 > The [lowLong]and [hiLong] values are negative as well. If I remove the = entire longitude section the search works fine. And if I change the = values in the db for longitude to positive, the search works, but that = just seems wrong... >=20 > zipcodes.db > zip city state lat long > 00501 HOLTSVILLE NY 40.81 -73.04 Hi Gil Have you tried using the 'ge' and 'le' (or 'gr' and 'ls') comparison = operators (if I said that right)? ... instead of the 'rn' operator. -G=
Govinda
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