Re: earthdistance

From: Olivier Chaussavoine <olivier(dot)chaussavoine(at)gmail(dot)com>
To: John R Pierce <pierce(at)hogranch(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: earthdistance
Date: 2013-08-10 10:17:39
Message-ID: CAKJCXwobFYfBKytQGihgCkcrJrkShDxfasgLpZFAg0Zts1VucQ@mail.gmail.com
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As a simple potential user, I tried to install PostGIS, downloaded all
libraries required: proj-4.8.0,
gdal-1.10.0,json-c,postgis-2.0.3,geos-3.3.8,libwml2-2.9.0, and tried to
build the first library with the simple procedure:

./configure
make
make install

I had a fatal error:

make[2]: entrant dans le répertoire « /home/olivier/ob/proj-4.8.0/src »
/bin/bash ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I.
-DPROJ_LIB=\"/usr/local/share/proj\" -DMUTEX_pthread -g -O2 -MT
jniproj.lo -MD -MP -MF .deps/jniproj.Tpo -c -o jniproj.lo jniproj.c
libtool: compile: gcc -DHAVE_CONFIG_H -I.
-DPROJ_LIB=\"/usr/local/share/proj\" -DMUTEX_pthread -g -O2 -MT jniproj.lo
-MD -MP -MF .deps/jniproj.Tpo -c jniproj.c -fPIC -DPIC -o .libs/jniproj.o
jniproj.c:52:26: fatal error: org_proj4_PJ.h: No such file or directory
compilation terminated.

problem out of the scope of this list, and probably not /difficult. Since I
look for a simple geographic indexing using imprecise lat,long coordinates
that do not deal with precise modeling; that I am afraid of long install
procedure, and heavy computations, I also give up.

Spacial mysql indexing seems to be included in pre-built packages.

What can we do?

2013/8/10 John R Pierce <pierce(at)hogranch(dot)com>

> On 8/9/2013 5:18 PM, Brent Wood wrote:
>
> You might install Postgis to implement very powerful spatial functionality that can easily do what you are asking (plus a whole lot more).
>
>
>
> indeed, PostGIS is the logical answer, but the OP specifically stated he
> wanted the functionality without 'sophisticated geographic systems'. so I
> ignored the question.
>
> the alternative would be implementing your own spherical geometry
> functions, and hook them up to GiST indexing, its not *that *hard, but by
> the time you got all the functionality you need, you'd be half way to
> PostGIS, so why fight it?
>
>
>
> --
> john r pierce 37N 122W
> somewhere on the middle of the left coast
>
>

--
Olivier Chaussavoine

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