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@@ -198,7 +198,7 @@ rule pdf_extract_page:
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shell: 'pdfseparate -f {wildcards.pagenum:q} -l {wildcards.pagenum:q} {input:q} {output:q}'
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rule pdf_crop:
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- '''Crop away margins from a PDF.'''
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+ '''Crop away empty margins from a PDF.'''
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input: pdf = 'graphics/{basename,.*(?!CROP).*}.pdf'
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output: pdf = 'graphics/{basename}-CROP.pdf'
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shell: 'pdfcrop --resolution 300 {input:q} {output:q}'
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@@ -209,6 +209,12 @@ rule pdf_raster:
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output: png = 'graphics/{basename}-RASTER.png'
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shell: 'pdftoppm -r 600 {input:q} | convert - {output:q}'
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+rule png_crop:
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+ '''Crop away empty margins from a PNG.'''
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+ input: pdf = 'graphics/{basename,.*(?!CROP).*}.png'
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+ output: pdf = 'graphics/{basename}-CROP.png'
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+ shell: 'magick {input:q} -trim {output:q}'
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+
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rule R_to_html:
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'''Render an R script as syntax-hilighted HTML.'''
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input: '{dirname}/{basename,[^/]+}.R'
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