gdalinfo.c.html

gdal库的学习文档

            }
            printf( <span class="stringliteral">"\n"</span> );
        }

        <span class="keywordflow">if</span>( <a class="code" href="gdal_8h.html#2325e6a7b5d3bf0e3add14aa87c32458">GDALHasArbitraryOverviews</a>( hBand ) )
        {
            printf( <span class="stringliteral">"  Overviews: arbitrary\n"</span> );
        }

        <span class="keywordflow">if</span>( strlen(<a class="code" href="gdal_8h.html#48e4bb5bb87c2f2df2db3e53badefa75">GDALGetRasterUnitType</a>(hBand)) &gt; 0 )
        {
            printf( <span class="stringliteral">"  Unit Type: %s\n"</span>, <a class="code" href="gdal_8h.html#48e4bb5bb87c2f2df2db3e53badefa75">GDALGetRasterUnitType</a>(hBand) );
        }

        <span class="keywordflow">if</span>( <a class="code" href="gdal_8h.html#c8de1aad913c58e63ee88b262594a228">GDALGetRasterCategoryNames</a>(hBand) != NULL )
        {
            <span class="keywordtype">char</span> **papszCategories = <a class="code" href="gdal_8h.html#c8de1aad913c58e63ee88b262594a228">GDALGetRasterCategoryNames</a>(hBand);
            <span class="keywordtype">int</span> i;

            printf( <span class="stringliteral">"  Categories:\n"</span> );
            <span class="keywordflow">for</span>( i = 0; papszCategories[i] != NULL; i++ )
                printf( <span class="stringliteral">"    %3d: %s\n"</span>, i, papszCategories[i] );
        }

        <span class="keywordflow">if</span>( GDALGetRasterScale( hBand, &amp;bSuccess ) != 1.0 
            || GDALGetRasterOffset( hBand, &amp;bSuccess ) != 0.0 )
            printf( <span class="stringliteral">"  Offset: %.15g,   Scale:%.15g\n"</span>,
                    GDALGetRasterOffset( hBand, &amp;bSuccess ),
                    GDALGetRasterScale( hBand, &amp;bSuccess ) );

        papszMetadata = <a class="code" href="gdal_8h.html#25929a66e99d92c2788485ecf13e2e82">GDALGetMetadata</a>( hBand, NULL );
        <span class="keywordflow">if</span>( bShowMetadata &amp;&amp; CSLCount(papszMetadata) &gt; 0 )
        {
            printf( <span class="stringliteral">"  Metadata:\n"</span> );
            <span class="keywordflow">for</span>( i = 0; papszMetadata[i] != NULL; i++ )
            {
                printf( <span class="stringliteral">"    %s\n"</span>, papszMetadata[i] );
            }
        }

        papszMetadata = <a class="code" href="gdal_8h.html#25929a66e99d92c2788485ecf13e2e82">GDALGetMetadata</a>( hBand, <span class="stringliteral">"IMAGE_STRUCTURE"</span> );
        <span class="keywordflow">if</span>( bShowMetadata &amp;&amp; CSLCount(papszMetadata) &gt; 0 )
        {
            printf( <span class="stringliteral">"  Image Structure Metadata:\n"</span> );
            <span class="keywordflow">for</span>( i = 0; papszMetadata[i] != NULL; i++ )
            {
                printf( <span class="stringliteral">"    %s\n"</span>, papszMetadata[i] );
            }
        }

        <span class="keywordflow">if</span>( <a class="code" href="gdal_8h.html#ec13128878a5f4e4a96605c4b6c71d6f">GDALGetRasterColorInterpretation</a>(hBand) == <a class="code" href="gdal_8h.html#ce76452d94514561fffa8ea1d2a5968c89ac10dbf2ab669cdeaa63eaba2790c2">GCI_PaletteIndex</a> 
            &amp;&amp; (hTable = <a class="code" href="gdal_8h.html#b4ebf9ba142ed1847cfb04143fb75c3e">GDALGetRasterColorTable</a>( hBand )) != NULL )
        {
            <span class="keywordtype">int</span>                 i;

            printf( <span class="stringliteral">"  Color Table (%s with %d entries)\n"</span>, 
                    <a class="code" href="gdal_8h.html#d8ebb02b029fec8a68399bfa71ffb553">GDALGetPaletteInterpretationName</a>(
                        GDALGetPaletteInterpretation( hTable )), 
                    GDALGetColorEntryCount( hTable ) );

            <span class="keywordflow">for</span>( i = 0; i &lt; GDALGetColorEntryCount( hTable ); i++ )
            {
                <a class="code" href="structGDALColorEntry.html">GDALColorEntry</a>  sEntry;

                GDALGetColorEntryAsRGB( hTable, i, &amp;sEntry );
                printf( <span class="stringliteral">"  %3d: %d,%d,%d,%d\n"</span>, 
                        i, 
                        sEntry.c1,
                        sEntry.c2,
                        sEntry.c3,
                        sEntry.c4 );
            }
        }

        <span class="keywordflow">if</span>( GDALGetDefaultRAT( hBand ) != NULL )
        {
            GDALRasterAttributeTableH hRAT = GDALGetDefaultRAT( hBand );
            
            GDALRATDumpReadable( hRAT, NULL );
        }
    }

    <a class="code" href="gdal_8h.html#0984222d45a72028fcbbf1f44831ffbc">GDALClose</a>( hDataset );
    
    CSLDestroy( papszExtraMDDomains );
    CSLDestroy( argv );
    
    <a class="code" href="gdal_8h.html#2cdae7717eedb8be9a501eea37a2bbc9">GDALDumpOpenDatasets</a>( stderr );

    <a class="code" href="gdal_8h.html#4769d3eda338f797b30405062deb9180">GDALDestroyDriverManager</a>();

    CPLDumpSharedList( NULL );
    CPLCleanupTLS();

    exit( 0 );
}

<span class="comment">/************************************************************************/</span>
<span class="comment">/*                        GDALInfoReportCorner()                        */</span>
<span class="comment">/************************************************************************/</span>

<span class="keyword">static</span> <span class="keywordtype">int</span> 
GDALInfoReportCorner( GDALDatasetH hDataset, 
                      <span class="keyword">const</span> <span class="keywordtype">char</span> * corner_name,
                      <span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y )

{
    <span class="keywordtype">double</span>      dfGeoX, dfGeoY;
    <span class="keyword">const</span> <span class="keywordtype">char</span>  *pszProjection;
    <span class="keywordtype">double</span>      adfGeoTransform[6];
    OGRCoordinateTransformationH hTransform = NULL;
        
    printf( <span class="stringliteral">"%-11s "</span>, corner_name );
    
<span class="comment">/* -------------------------------------------------------------------- */</span>
<span class="comment">/*      Transform the point into georeferenced coordinates.             */</span>
<span class="comment">/* -------------------------------------------------------------------- */</span>
    <span class="keywordflow">if</span>( <a class="code" href="gdal_8h.html#df94718221d264fc798043e13adf8c8f">GDALGetGeoTransform</a>( hDataset, adfGeoTransform ) == CE_None )
    {
        pszProjection = <a class="code" href="gdal_8h.html#639a11014cf6c4ff30df6f21d5db9da2">GDALGetProjectionRef</a>(hDataset);

        dfGeoX = adfGeoTransform[0] + adfGeoTransform[1] * x
            + adfGeoTransform[2] * y;
        dfGeoY = adfGeoTransform[3] + adfGeoTransform[4] * x
            + adfGeoTransform[5] * y;
    }

    <span class="keywordflow">else</span>
    {
        printf( <span class="stringliteral">"(%7.1f,%7.1f)\n"</span>, x, y );
        <span class="keywordflow">return</span> FALSE;
    }

<span class="comment">/* -------------------------------------------------------------------- */</span>
<span class="comment">/*      Report the georeferenced coordinates.                           */</span>
<span class="comment">/* -------------------------------------------------------------------- */</span>
    <span class="keywordflow">if</span>( ABS(dfGeoX) &lt; 181 &amp;&amp; ABS(dfGeoY) &lt; 91 )
    {
        printf( <span class="stringliteral">"(%12.7f,%12.7f) "</span>, dfGeoX, dfGeoY );

    }
    <span class="keywordflow">else</span>
    {
        printf( <span class="stringliteral">"(%12.3f,%12.3f) "</span>, dfGeoX, dfGeoY );
    }

<span class="comment">/* -------------------------------------------------------------------- */</span>
<span class="comment">/*      Setup transformation to lat/long.                               */</span>
<span class="comment">/* -------------------------------------------------------------------- */</span>
    <span class="keywordflow">if</span>( pszProjection != NULL &amp;&amp; strlen(pszProjection) &gt; 0 )
    {
        OGRSpatialReferenceH hProj, hLatLong = NULL;

        hProj = OSRNewSpatialReference( pszProjection );
        <span class="keywordflow">if</span>( hProj != NULL )
            hLatLong = OSRCloneGeogCS( hProj );

        <span class="keywordflow">if</span>( hLatLong != NULL )
        {
            CPLPushErrorHandler( CPLQuietErrorHandler );
            hTransform = OCTNewCoordinateTransformation( hProj, hLatLong );
            CPLPopErrorHandler();
            
            OSRDestroySpatialReference( hLatLong );
        }

        <span class="keywordflow">if</span>( hProj != NULL )
            OSRDestroySpatialReference( hProj );
    }

<span class="comment">/* -------------------------------------------------------------------- */</span>
<span class="comment">/*      Transform to latlong and report.                                */</span>
<span class="comment">/* -------------------------------------------------------------------- */</span>
    <span class="keywordflow">if</span>( hTransform != NULL 
        &amp;&amp; OCTTransform(hTransform,1,&amp;dfGeoX,&amp;dfGeoY,NULL) )
    {
        
        printf( <span class="stringliteral">"(%s,"</span>, GDALDecToDMS( dfGeoX, <span class="stringliteral">"Long"</span>, 2 ) );
        printf( <span class="stringliteral">"%s)"</span>, GDALDecToDMS( dfGeoY, <span class="stringliteral">"Lat"</span>, 2 ) );
    }

    <span class="keywordflow">if</span>( hTransform != NULL )
        OCTDestroyCoordinateTransformation( hTransform );
    
    printf( <span class="stringliteral">"\n"</span> );

    <span class="keywordflow">return</span> TRUE;
}

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