[postgis-devel] Public Raster C API

Thu May 28 01:03:40 PDT 2015

Remi,

Do have any experience with Autotools?  Right now I could use some help with the process of extracting librtcore.so, eg. Moving it to dynamic linking.

From: postgis-devel-bounces at lists.osgeo.org [mailto:postgis-devel-bounces at lists.osgeo.org] On Behalf Of Rémi Cura
Sent: Thursday, May 28, 2015 3:39 AM
To: PostGIS Development Discussion
Subject: Re: [postgis-devel] Public Raster C API

Hey, I was looking recently for a python access to PostGIS raster from within the base. A C api might be the first step? Cheers

Le 28 mai 2015 09:04, "Nathaniel Clay" <clay.nathaniel at gmail.com <mailto:clay.nathaniel at gmail.com> > a écrit :

Bborie,

Just to be clear we need to move from static linking to dynamic linking and separate out "librtcore.so" from "rtpostgis.so". This can be done with libtool,  honestly this would be my first attempt at using Autotools can I get a little hand holding here.

Humbly,

Nathaniel Hunter Clay

On Wed, May 27, 2015 at 8:10 PM, Bborie Park <dustymugs at gmail.com <mailto:dustymugs at gmail.com> > wrote:

Hm... Sounds like the Makefile needs changing to install librtcore.so.

On Wed, May 27, 2015 at 4:22 PM, Nathaniel Clay <clay.nathaniel at gmail.com <mailto:clay.nathaniel at gmail.com> > wrote:

Bborie,

I think it all gets rolled up into rtpostgis.so. As far as I can tell there is no librtcore.so.

Thanks,

Nathaniel Hunter Clay

On Wed, May 27, 2015 at 7:13 PM, Bborie Park <dustymugs at gmail.com <mailto:dustymugs at gmail.com> > wrote:

Nah. The library was meant to be consumed by whomever wants to consume it. If the header is not copied, that'd be an oversight and a ticket should be filed... Having said that I need to see where librtcore.so gets installed...

On Wed, May 27, 2015 at 2:41 PM, Nathaniel Clay <clay.nathaniel at gmail.com <mailto:clay.nathaniel at gmail.com> > wrote:

Bborie,

The librtcore header is not copied, to /usr/include so I am assuming that the library functions included in the library were meant to be private. This is for a external project. Is this an over-site? Or am I missing something fundamental.

Thanks as Always,

Nathaniel Hunter Clay

On Wed, May 27, 2015 at 5:35 PM, Bborie Park <dustymugs at gmail.com <mailto:dustymugs at gmail.com> > wrote:

Actually, yes. raster2pgsql directly consumes librtcore...

On Wed, May 27, 2015 at 2:33 PM, Bborie Park <dustymugs at gmail.com <mailto:dustymugs at gmail.com> > wrote:

Do you mean directly accessing librtcore? I believe you can go directly at that library if so inclined.

-bborie

On Wed, May 27, 2015 at 2:31 PM, Nathaiel Clay <clay.nathaniel at gmail.com <mailto:clay.nathaniel at gmail.com> > wrote:

Hi All,

Could we expose some of the raster C functions to read and write to raster’s, and low level pixel to geo-point and geo-point to pixel and etc. Just want your input, I am more than willing to do the work myself.

Thanks,

Nathaniel Hunter Clay

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