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View Code? Open in Web Editor NEWImproved Geohash Gem for Ruby
Improved Geohash Gem for Ruby
NOTE: this is not maintained. Recommend checking out other gems such as this one: https://rubygems.org/gems/dynamodb_geo --- = geohash * http://rubyforge.org/projects/geohash == DESCRIPTION: GeoHash Gem for Ruby (c) 2008-2010 David Troy [email protected] Geohash is a latitude/longitude encoding system invented by Gustavo Niemeyer when writing the web service at geohash.org, and put into the public domain. Geohashes offer properties like arbitrary precision, similar prefixes for nearby positions, and the possibility of gradually removing characters from the end of the code to reduce its size (and gradually lose precision). See these resources online: http://geohash.org http://en.wikipedia.org/wiki/Geohash http://openlocation.org/geohash/geohash-js (javascript implementation and demo) == FEATURES/PROBLEMS: * Encode to Geohash Format to an arbitrary level of precision * Decode from Geohash Format to an arbitrary level of precision * C implementation is over 10 times faster than native Ruby code (we checked) * No known problems == SYNOPSIS: GeoHash is very easy to use (and fast) because it's written in C with Ruby bindings. require 'rubygems' require 'geohash' GeoHash.decode('f77') => [63.98438, -73.82813] GeoHash.encode(39.51, -76.24) => "dr1bc0edrj" # Decode a geohash to a bounding box decode_bbox('dqcw4') => [39.0234375, -76.552734375], [39.0673828125, -76.5087890625]] You can encode or decode to an arbitrary level of precision: # Encode latitude and longitude to a geohash with precision digits encode(lat, lon, precision=10) # Decode a geohash to a latitude and longitude with decimals digits decode(geohash, decimals=5) Have fun with this! GeoHash is the new black. == REQUIREMENTS: * GCC and a Gnu-ish build environment (for native extensions) == INSTALLATION 1) Enable gems from github, if you haven't already done so (rubygems >= 1.2): > sudo gem sources -a http://gems.github.com 2) Install gem > sudo gem install davetroy-geohash 3) Profit! == LICENSE: (The MIT License) Copyright (c) 2008-2010 David Troy Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
First, thanks for this useful gem. It simply works!
I installed it some time ago following the instruction in the README, and it worked, but now I have to use Bundler and it doesn't.
The Gemfile contains this line...
gem "geohash", '~> 1.1', :git => "https://github.com/davetroy/geohash.git"
and when "bundle install" is run, the result is...
Using geohash (1.1.1) from https://github.com/davetroy/geohash.git (at master) with native extensions /Library/Ruby/Site/1.8/rubygems/installer.rb:483:in `build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
creating Makefile
make
gcc -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin10.0 -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin10.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -Os -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c geohash_native.c
geohash_native.c: In function 'encode':
geohash_native.c:123: error: 'struct RFloat' has no member named 'float_value'
geohash_native.c:123: error: 'struct RFloat' has no member named 'float_value'
geohash_native.c: In function 'encode':
geohash_native.c:123: error: 'struct RFloat' has no member named 'float_value'
geohash_native.c:123: error: 'struct RFloat' has no member named 'float_value'
lipo: can't open input file: /var/folders/Eo/EoP8v2DDHw4avD+-wzeu6E+++TI/-Tmp-//cc0DIVD8.out (No such file or directory)
make: *** [geohash_native.o] Error 1
Any idea on how to solve it? I would really appreaciate it.
Thanks in advance.
Hi,
trying to install gem on ruby 1.9, I got the following error:
Building native extensions. This could take a while...
ERROR: Error installing davetroy-geohash:
ERROR: Failed to build gem native extension.
/usr/local/bin/ruby extconf.rb
creating Makefile
make
gcc -I. -I/usr/local/include/ruby-1.9.1/x86_64-linux -I/usr/local/include/ruby-1.9.1/ruby/backward -I/usr/local/include/ruby-1.9.1 -I. -fPIC -O2 -g -Wall -Wno-parentheses -o geohash_native.o -c geohash_native.c
geohash_native.c: In function ‘encode’:
geohash_native.c:123: error: ‘struct RFloat’ has no member named ‘value’
geohash_native.c:123: error: ‘struct RFloat’ has no member named ‘value’
geohash_native.c: In function ‘decode_bbox’:
geohash_native.c:135: error: ‘struct RString’ has no member named ‘ptr’
geohash_native.c: In function ‘decode’:
geohash_native.c:158: error: ‘struct RString’ has no member named ‘ptr’
geohash_native.c: In function ‘calculate_adjacent’:
geohash_native.c:196: error: ‘struct RString’ has no member named ‘ptr’
geohash_native.c:199: error: ‘struct RString’ has no member named ‘ptr’
make: *** [geohash_native.o] Błąd 1
Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/davetroy-geohash-1.1.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/davetroy-geohash-1.1.0/ext/gem_make.out
I'm curious how you settled on your Base32 alphabet (excluding AILO)? RFC4648 style (excluding 0189) and Crockford (excluding ILOU) seem more standard (per Wikipedia) and have active gem implementations. Might be being thick but I couldn't find a ready-made decoder for your scheme.
Thanks for your time.
I know this repo isn't really maintained anymore, but it no longer even installs for new versions of ruby.
Delete this if it's not okay, but I built a new version of a ruby geohash gem backed by a C library.
https://rubygems.org/gems/dynamodb_geo
If we try to generate a geohash from a latitude of 90 or -89.99, it causes a segmentation fault, bringing down Ruby.
/Users/patrick/.rbenv/versions/2.0.0-p195/lib/ruby/gems/2.0.0/bundler/gems/geohash-03d655d5bf92/lib/geohash.rb:22: [BUG] Segmentation fault
ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-darwin12.3.0]
-- Crash Report log information --------------------------------------------
See Crash Report log file under the one of following:
* ~/Library/Logs/CrashReporter
* /Library/Logs/CrashReporter
* ~/Library/Logs/DiagnosticReports
* /Library/Logs/DiagnosticReports
the more detail of.
-- Control frame information -----------------------------------------------
c:0029 p:---- s:0135 e:000134 CFUNC :encode_base
c:0028 p:0017 s:0129 e:000128 METHOD /Users/patrick/.rbenv/versions/2.0.0-p195/lib/ruby/gems/2.0.0/bundler/gems/geohash-03d655d5bf92/lib/geohash.rb:22
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