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SGI Freeware 2001 May
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SGI Freeware 2001 May - Disc 2.iso
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dist
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fw_netpbm.idb
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usr
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freeware
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catman
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u_man
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cat1
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asciitopgm.Z
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asciitopgm
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Text File
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2001-01-10
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2KB
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67 lines
aaaasssscccciiiiiiiittttooooppppggggmmmm((((1111)))) UUUUNNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((22226666 DDDDeeeecccceeeemmmmbbbbeeeerrrr 1111999999994444)))) aaaasssscccciiiiiiiittttooooppppggggmmmm((((1111))))
NNNNAAAAMMMMEEEE
asciitopgm - convert ASCII graphics into a portable graymap
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
aaaasssscccciiiiiiiittttooooppppggggmmmm [-d divisor] _h_e_i_g_h_t _w_i_d_t_h [_a_s_c_i_i_f_i_l_e]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
Reads ASCII data as input. Produces a portable graymap with
pixel values which are an approximation of the "brightness"
of the ASCII characters, assuming black-on-white printing.
In other words, a capital M is very dark, a period is ver
light, and a space is white. Input lines which are fewer
than _w_i_d_t_h characters are automatically padded with spaces.
The _d_i_v_i_s_o_r argument is a floating-point number by which the
output pixels are divided; the default value is 1.0. This
can be used to adjust the brightness of the graymap: for
example, if the image is too dim, reduce the divisor.
In keeping with (I believe) Fortran line-printer
conventions, input lines beginning with a + (plus) character
are assumed to "overstrike" the previous line, allowing a
larger range of gray values.
This tool contradicts the message in the _p_b_m_t_o_a_s_c_i_i manual:
"Note that there is no asciitopbm tool - this transformation
is one-way."
BBBBUUUUGGGGSSSS
The table of ASCII-to-grey values is subject to
interpretation, and, of course, depends on the typeface
intended for the input.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
pbmtoascii(1), pgm(5)
AAAAUUUUTTTTHHHHOOOORRRR
Wilson H. Bent. Jr. (whb@usc.edu)
Page 1 (printed 12/12/00)