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/*
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/*
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 *  R : A Computer Language for Statistical Data Analysis
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 *  R : A Computer Language for Statistical Data Analysis
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 *  Copyright (C) 1999-2010  Guido Masarotto and the R Development Core Team
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 *  Copyright (C) 1999-2011  Guido Masarotto and the R Development Core Team
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 *
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *  (at your option) any later version.
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		    ncols ++;
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		    ncols ++;
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		}
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		}
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	    }
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	    }
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	}
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	}
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    }
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    }
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 - 
 
- 
 
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    col = gp(d,0,0);
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    have_alpha &= (transparent == 0);
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    //have_alpha &= (transparent == 0);
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    /* Set the image information here.  Width and height are up to 2^31,
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    /* Set the image information here.  Width and height are up to 2^31,
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     * bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
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     * bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
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     * the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
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     * the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
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     * PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,
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     * PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,