Please find attached the code and associated error after compilation...
gcc -o test imagescale.cpp -I /usr/include/gdal -lgdal
/usr/bin/ld: /tmp/ccrySeCX.o: undefined reference to symbol 'floor@
@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from
command line
collect2: error: ld returned 1 exit status
On Mon, Nov 3, 2014 at 1:41 PM, Johan Van de Wauw <johan.vandew...@gmail.com
> wrote:
> Please include the error. And possibly also the file if it is no
> secret, will help you get a much better answer.
>
> Johan
>
> BTW: keep the ubuntugis list in cc, other people may benefit from
> reading how we solved your problem.
>
> On Mon, Nov 3, 2014 at 9:39 PM, alassane toure <atou...@gmail.com> wrote:
> > Hi Johan,
> > I am not a sophisticated user of gdal. I am looking for the easiest way
> to
> > have the compiler running. As such, I followed your instruction by
> running
> > the version included in ubuntu "sudo apt-get install libgdal-dev" but the
> > compilation of the program test.cpp did not work. This issue started
> when i
> > install the latest ubuntu version.
> >
> > Again, thanks for your insight!
> >
> > On Mon, Nov 3, 2014 at 1:26 PM, Johan Van de Wauw
> > <johan.vandew...@gmail.com> wrote:
> >>
> >> Hello Alassane,
> >>
> >> First of all, you should tell us what you actually want to achieve.
> >> You may be better of using the gdal libraries which are already part
> >> of ubuntu rather than compiling your own version.
> >>
> >> If you want to use the version of gdal included in ubuntu install the
> >> package libgdal-dev . You can do so using your favorite package
> >> manager or using the command prompt: sudo apt-get install libgdal-dev
> >>
> >> If you do that your command will probably work without extra effort.
> >>
> >> If there is a good reason to install your own version, you can still
> >> do so, but you should be aware that you are probably installing to
> >> /usr/local instead of /usr.
> >>
> >> In that case you should adjust for the include:
> >> gcc -o test test.cpp -I /usr/local/include/gdal -lgdal
> >>
> >> adjusting the linking is slightly more work.try running ldconfig (as
> >> root so sudo ldconfig) first after the installation. If that does not
> >> work make sure that the directory /usr/local/lib is part of
> >> /etc/ld.so.conf and run ldconfig again.
> >>
> >> Johan
> >>
> >> Johan
> >>
> >> On Mon, Nov 3, 2014 at 9:12 PM, alassane toure <atou...@gmail.com>
> wrote:
> >> > I was able to run it successfully but the following command did not
> >> > work..
> >> > gcc -o test test.cpp -I /usr/include/gdal -lgdal
> >> >
> >> > Any thoughts?
> >> > Thanks,
> >> >
> >> > On Mon, Nov 3, 2014 at 12:24 PM, Johan Van de Wauw
> >> > <johan.vandew...@gmail.com> wrote:
> >> >>
> >> >> On ubuntu, run "sudo make install"
> >> >>
> >> >> Alternatively, you may wait a few days until gdal 1.11.1 hits
> >> >> ubuntugis-unstable.
> >> >>
> >> >> Johan
> >> >>
> >> >> On Mon, Nov 3, 2014 at 8:11 PM, alassane toure <atou...@gmail.com>
> >> >> wrote:
> >> >> > Group,
> >> >> > I downloaded the gdal version 1.11.1 and followed instructions
> >> >> > provided
> >> >> > in
> >> >> > http://trac.osgeo.org/gdal/wiki/BuildingOnUnix
> >> >> >
> >> >> > % cd gdal
> >> >> > % ./configure
> >> >> > % make
> >> >> > % su
> >> >> > Password: ********
> >> >> > # make install
> >> >> > # exit
> >> >> >
> >> >> > All went well but without a 'su' credential, I was unable to
> complete
> >> >> > the
> >> >> > installation.
> >> >> > I am running windows and unix on the same machine with the same
> >> >> > access
> >> >> > username and password. Do i need to create a su account
> >> >> >
> >> >> > or is there another way to have the gdal compiler working again?
> >> >> >
> >> >> > I appreciate your help
> >> >> >
> >> >> > Regards,
> >> >> > Alassane
> >> >> >
> >> >> >
> >> >> >
> >> >> > On Thu, May 24, 2012 at 1:16 PM, Alassane Toure <atou...@gmail.com
> >
> >> >> > wrote:
> >> >> >>
> >> >> >> Group,
> >> >> >> I need help to install GDAL 1.9.1 on Ubuntu 12.04. I first
> >> >> >> downloaded
> >> >> >> gdal-1.9.1.tar.gz, uncompressed it and executed ./configure.
> Where
> >> >> >> do
> >> >> >> I go
> >> >> >> from here?
> >> >> >>
> >> >> >> Thanks for your help
> >> >> >
> >> >> >
> >> >> >
> >> >> > _______________________________________________
> >> >> > UbuntuGIS mailing list
> >> >> > Ubuntu@lists.osgeo.org
> >> >> > http://lists.osgeo.org/mailman/listinfo/ubuntu
> >> >> > http://trac.osgeo.org/ubuntugis/wiki
> >> >
> >> >
> >
> >
>
#include <stdio.h>
#include "gdal_priv.h"
#include "cpl_conv.h" // for CPLMalloc()
#include "cpl_string.h"
int main ( int argc, char *argv[] )
{
GDALDataset *inDataset,*outDataset;
GDALDriver *poDriver;
GDALRasterBand *RedBand, *NIRBand,*outBand;
double adfGeoTransform[6];
const char *pszFormat = "GTiff";
char **papszOptions = NULL;
char *inFilename, *outFilename;
float *RedScanline, *NIRScanline, *outScanline;
int nXSize, nYSize, iLine, iX;
GDALAllRegister();
if ( argc != 3 ) /* argc should be 3 for correct execution */
{
/* We print argv[0] assuming it is the program name */
printf( "usage: %s inputfilename outputfilename", argv[0] );
}
else
{
// inFilename = "/home/alassane/Documents/nps.TIF";
inFilename = argv[1];
outFilename = argv[2];
// outFilename = "/home/alassane/Documents/out.tif";
inDataset = (GDALDataset *) GDALOpen( inFilename, GA_ReadOnly );
RedBand = inDataset->GetRasterBand( 3 );
NIRBand = inDataset->GetRasterBand( 4 );
nXSize = RedBand->GetXSize();
nYSize = RedBand->GetYSize();
if( inDataset->GetProjectionRef() != NULL )
printf( "Projection is `%s'\n", inDataset->GetProjectionRef() );
RedScanline = (float *) CPLMalloc(sizeof(float)*nXSize);
NIRScanline = (float *) CPLMalloc(sizeof(float)*nXSize);
outScanline = (float *) CPLMalloc(sizeof(float)*nXSize);
poDriver = GetGDALDriverManager()->GetDriverByName(pszFormat);
outDataset = poDriver->Create( outFilename, nXSize, nYSize, 1, GDT_Byte, papszOptions );
outBand = outDataset->GetRasterBand( 1 );
inDataset->GetGeoTransform( adfGeoTransform );
outDataset->SetGeoTransform( adfGeoTransform );
outDataset->SetProjection( inDataset->GetProjectionRef() );
for( iLine = 0; iLine < nYSize; iLine++ )
{
// printf( "line # is %d\n", iLine);
RedBand->RasterIO( GF_Read, 0, iLine,nXSize, 1, RedScanline, nXSize, 1, GDT_Float32,0, 0 );
NIRBand->RasterIO( GF_Read, 0, iLine,nXSize, 1, NIRScanline, nXSize, 1, GDT_Float32,0, 0 );
for( iX = 0; iX < nXSize; iX++ )
{
// printf( "pixel# is %d\n", iX);
if (NIRScanline[iX] == 0 && RedScanline[iX] == 0)
{
outScanline[iX] = 0;
}
else
{
outScanline[iX]=100*( NIRScanline[iX] - RedScanline[iX] )/( NIRScanline[iX] + RedScanline[iX] );
/* Binning veg index in 10 bins or 10% bins */
if (outScanline[iX] <=0)
{
outScanline[iX] =0;
}
else if (outScanline[iX] >100)
{
outScanline[iX] =11;
}
else
{
outScanline[iX] =floor(outScanline[iX]/10)+1;
}
/************ End of binning ***************/
}
}
outBand->RasterIO( GF_Write, 0, iLine,nXSize, 1, outScanline, nXSize, 1, GDT_Float32,0, 0 );
// outBand->RasterIO( GF_Write, 0, iLine,nXSize, 1, outScanline, nXSize, 1, GDT_Byte,0, 0 );
}
CPLFree( RedScanline );
CPLFree( NIRScanline );
CPLFree( outScanline );
GDALClose( inDataset );
GDALClose( outDataset );
}
}
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