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############################################################################
#
# File: flohisto.icn
#
# Subject: Program to display float histograms
#
# Author: Ralph E. Griswold
#
# Date: June 28, 2002
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program analyzes the floats in BLPs for drawdowns.
#
# The names of BLPs are given on the command line. The output images
# are named <basename>_float.gif
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: link basename, numbers, options, wopen
#
############################################################################
link basename
link wopen
link numbers
link pattread
$define FloatMax 15
$define Width 300
$define Gutter 20
$define Height 250
$define Delta 9
$define Gap 4
$define Xoff 20
$define Yoff 30
procedure main(args)
local front, back, black, white, name, i, canvas
local warp_front, warp_back, weft_front, weft_back, win, input
every name := !args do {
input := open(name) | stop("Cannot open ", name)
front := pattread(input)
close(input)
back := copy(front) # 0 = black, 1 = white.
every i := 1 to *back do
back[i] := map(back[i], "10", "01")
weft_front := analyze(front, "1")
front := rot(front)
warp_front := analyze(front, "0")
weft_back := analyze(back, "1")
back := rot(back)
warp_back := analyze(back, "0")
win := WOpen("size=" || (2 * Width + 2 * Gutter) || "," ||
(2 * Height + 2 * Gutter), "canvas=hidden") |
stop("*** cannot open main window")
CopyArea(plot(warp_front, "warp front"), win, , , , , 0, 0)
CopyArea(plot(weft_front, "weft front"), win, , , , , Width + Gutter, 0)
CopyArea(plot(warp_back, "warp back"), win, , , , , 0, Height + Gutter)
CopyArea(plot(weft_back, "weft back"), win, , , , , Width + Gutter,
Height + Gutter)
WriteImage(win, basename(name, ".blp") || "_floats.gif")
WClose(win)
}
end
procedure analyze(rows, color)
local counts, length, row, k, count_list
counts := table(0)
every row := !rows do {
row ? {
while tab(upto(color)) do {
length := *tab(many(color))
if length > 1 then counts[length] +:= 1
}
}
}
if *counts = 0 then fail # no floats
count_list := list(FloatMax, 0) # list of counts
every k := key(counts) do
if k > FloatMax then count_list[FloatMax] +:= counts[k]
else count_list[k - 1] := counts[k]
return count_list
end
procedure plot(data, legend)
local i, j, scale, maximum, y, width, win
win := WOpen("size=" || Width || "," || Height, "font=times,10", "canvas=hidden") |
stop("*** cannot open plotting window")
WAttrib(win, "dx=" || Xoff)
WAttrib(win, "dy=" || (Yoff + Gap))
DrawLine(win, 0, 0 - Gap, Width, 0 - Gap)
DrawLine(win, 0, 0 - Gap, 0, Height - Gap)
DrawString(win, -2, -(18 + Gap), legend)
if /data then return win
maximum := max ! data
maximum := integer((maximum + 99.0) / 100) * 100 # get to next hundred
width := real(Width - 2 * Xoff)
scale := width / maximum
every i := 0 to 4 do
CenterString(win, (width / 4) * i, 18 - Yoff, (maximum / 4) * i)
every j := 2 to FloatMax + 1 do {
y := (j - 2) * (Delta + Gap)
FillRectangle(win, 0, y, data[j - 1] * scale, Delta)
if j > FloatMax then j := ">"
RightString(win, 15 - Xoff, y + Gap, j)
}
return win
end
procedure win2rows(win)
local width, height, row, rows, pixel, y
width := WAttrib(win, "width")
height := WAttrib(win, "height")
rows := []
every y := 0 to height - 1 do {
row := ""
every pixel := Pixel(win, 0, y, width, 1) do
row ||:= if pixel == "0,0,0" then "0" else "1"
put(rows, row)
}
return rows
end
procedure rot(rows)
local cols, row, grid, i
cols := list(*rows[1], "")
every row := !rows do {
i := 0
every grid := !row do
cols[i +:= 1] := grid || cols[i]
}
return cols
end
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