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Posted by Jonathan Greenberg on July 19, 2004, 10:37 pm
Hi there -- I was wondering if anyone knows of a good set of C++, Java or
some other programming language set of libraries/source code for dealing
with shapefiles (e.g. Vector to raster conversion, querying the shapefile
database, etc.) -- we are trying to create a standalone program for
manipulating shapefiles and don't want to be working within some other
program's environment, such as ArcMap or GRASS. Any good sites? Thanks!

--j

--
Jonathan Greenberg
Graduate Group in Ecology, U.C. Davis
http://www.cstars.ucdavis.edu/~jongreen
http://www.cstars.ucdavis.edu
AIM: jgrn307 or jgrn3007
MSN: jgrn307@msn.com or jgrn3007@msn.com



Posted by Norman Barker on July 20, 2004, 8:18 am
Jonathan Greenberg wrote:
> Hi there -- I was wondering if anyone knows of a good set of C++, Java or
> some other programming language set of libraries/source code for dealing
> with shapefiles (e.g. Vector to raster conversion, querying the shapefile
> database, etc.) -- we are trying to create a standalone program for
> manipulating shapefiles and don't want to be working within some other
> program's environment, such as ArcMap or GRASS. Any good sites? Thanks!
>
> --j
>
Hi,

The recent MapServer conference had a review of open source software

http://www.maptools.org/dl_scripts/redirector.php?path=omsug/osgis2004/2004-05-OSS-Briefing.doc

From personal experience I would recommend http://www.geotools.org if
you are doing java, and GDAL (using the OGR library for vector data) if
you are doing c++. The python libraries for GDAL in OpenEV make
GDAL it easy.

Norman

--
Take the DOG out to reply


Posted by Andre Ringeler on July 23, 2004, 5:20 am
> Jonathan Greenberg wrote:
> > Hi there -- I was wondering if anyone knows of a good set of C++, Java or
> > some other programming language set of libraries/source code for dealing
> > with shapefiles (e.g. Vector to raster conversion, querying the shapefile
> > database, etc.) -- we are trying to create a standalone program for
> > manipulating shapefiles and don't want to be working within some other
> > program's environment, such as ArcMap or GRASS. Any good sites? Thanks!
> >

Hallo Jonathan,

Have a look at SAGA-GIS:
http://geosun1.uni-geog.gwdg.de/saga/html/index.php

The SAGA API is written in C++ and
you can use this API as standalone library.

Andre
_______________________________________________________________________________

Example:

#include"shapes.h"

int iShape, iPart, iPoint;
TGEO_dPoint Point;
CShapes *pShapes_A, *pShapes_B;
CShape *pShape_A, *pShape_B;

pShape_A = new CShapes (NULL, "input.shp");

pShapes_B = new CShapes (pShapes_A->Get_Type(), "Translation",
pShapes_A->Get_Table());

//-----------------------------------------------------
// Copy shapes layer A to B and translate each point's position...

for(iShape=0; iShape<pShapes_A->Get_Count(); iShape++)
{
pShape_A = pShapes_A->Get_Shape(iShape);
pShape_B = pShapes_B->Add_Shape(pShape_A->Get_Record());

for(iPart=0; iPart<pShape_A->Get_Part_Count(); iPart++)
{
for(iPoint=0; iPoint<pShape_A->Get_Point_Count(iPart);
iPoint++)
{
Point = pShape_A->Get_Point(iPoint, iPart);

Point.x += 10; // perform the translation before
Point.y += 10;

pShape_B->Add_Point(Point, iPart);// you add the point
to the new shape...
}
}
}

pShapes_B->Save(NULL,"result.shp");


Posted by The Guru on July 26, 2004, 7:58 am
I found a bunch of nice, free, multi-language libraries at:

http://www.freegis.org

and:

http://data.geocomm.com/

and also try:

http://software.geocomm.com/


Posted by Sean Fulton on July 30, 2004, 3:51 pm

>> Hi there -- I was wondering if anyone knows of a good set of C++, Java or
>> some other programming language set of libraries/source code for dealing
>> with shapefiles (e.g. Vector to raster conversion, querying the shapefile
>> database, etc.) -- we are trying to create a standalone program for
>> manipulating shapefiles and don't want to be working within some other
>> program's environment, such as ArcMap or GRASS. Any good sites? Thanks!
>>
>> --j

Look at shapelib and GDAL

http://shapelib.maptools.org/
http://gdal.maptools.org/index.html

        Sean



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