;;; chart.el --- Draw charts (bar charts, etc) -*- lexical-binding: t -*-
;; Copyright (C) 1996-2022 Free Software Foundation, Inc.
;; Author: Eric M. Ludlam <zappo@gnu.org>
;; Old-Version: 0.2
;; Keywords: OO, chart, graph
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; This package is an experiment of mine aiding in the debugging of
;; eieio, and proved to be neat enough that others may like to use
;; it. To quickly see what you can do with chart, run the command
;; `chart-test-it-all'.
;;
;; Chart current can display bar-charts in either of two
;; directions. It also supports ranged (integer) axis, and axis
;; defined by some set of strings or names. These name can be
;; automatically derived from data sequences, which are just lists of
;; anything encapsulated in a nice eieio object.
;;
;; Current example apps for chart can be accessed via these commands:
;; `chart-file-count' - count files w/ matching extensions
;; `chart-space-usage' - display space used by files/directories
;; `chart-emacs-storage' - Emacs storage units used/free (garbage-collect)
;; `chart-emacs-lists' - length of Emacs lists
;; `chart-rmail-from' - who sends you the most mail (in -summary only)
;;
;; Customization:
;;
;; If you find the default colors and pixmaps unpleasant, or too
;; short, you can change them. The variable `chart-face-color-list'
;; contains a list of colors, and `chart-face-pixmap-list' contains
;; all the pixmaps to use. The current pixmaps are those found on
;; several systems I found. The two lists should be the same length,
;; as the long list will just be truncated.
;;
;; If you would like to draw your own stipples, simply create some
;; xbm's and put them in a directory, then you can add:
;;
;; (setq x-bitmap-file-path (cons "~/mybitmaps" x-bitmap-file-path))
;;
;; to your .emacs (or wherever) and load the `chart-face-pixmap-list'
;; with all the bitmaps you want to use.
(require 'eieio)
(eval-when-compile (require 'cl-lib))
(eval-when-compile (require 'cl-generic))
;;; Code:
(defvar-keymap chart-mode-map :doc "Keymap used in chart mode.")
(defvar-local chart-local-object nil
"Local variable containing the locally displayed chart object.")
(defvar chart-face-color-list '("red" "green" "blue"
"cyan" "yellow" "purple")
"Colors to use when generating `chart-face-list'.
Colors will be the background color.")
(defvar chart-face-pixmap-list
(if (display-graphic-p)
'("dimple1" "scales" "dot" "cross_weave" "boxes" "dimple3"))
"If pixmaps are allowed, display these background pixmaps.
Useful if new Emacs is used on B&W display.")
(defcustom chart-face-use-pixmaps nil
"Non-nil to use fancy pixmaps in the background of chart face colors."
:group 'eieio
:type 'boolean)
(declare-function x-display-color-cells "xfns.c" (&optional terminal))
(defvar chart-face-list #'chart--face-list
"Faces used to colorize charts.
This should either be a list of faces, or a function that returns
a list of faces.
List is limited currently, which is ok since you really can't display
too much in text characters anyways.")
(defun chart--face-list ()
(and
(display-color-p)
(let ((cl chart-face-color-list)
(pl chart-face-pixmap-list)
(faces ())
nf)
(while cl
(setq nf (make-face
(intern (concat "chart-" (car cl) "-" (car pl)))))
(set-face-background nf (if (condition-case nil
(> (x-display-color-cells) 4)
(error t))
(car cl)
"white"))
(set-face-foreground nf "black")
(if (and chart-face-use-pixmaps pl)
(condition-case nil
(set-face-stipple nf (car pl))
(error (message "Cannot set background pixmap %s" (car pl)))))
(push nf faces)
(setq cl (cdr cl)
pl (cdr pl)))
faces)))
(define-derived-mode chart-mode special-mode "Chart"
"Define a mode in Emacs for displaying a chart."
(buffer-disable-undo)
(setq-local font-lock-global-modes nil)
(font-lock-mode -1) ;Isn't it off already? --Stef
)
(defclass chart ()
((title :initarg :title
:initform "Emacs Chart")
(title-face :initarg :title-face
:initform 'bold-italic)
(x-axis :initarg :x-axis
:initform nil )
(x-margin :initarg :x-margin
:initform 5)
(x-width :initarg :x-width
)
(y-axis :initarg :y-axis
:initform nil)
(y-margin :initarg :y-margin
:initform 5)
(y-width :initarg :y-width
)
(key-label :initarg :key-label
:initform "Key")
(sequences :initarg :sequences
:initform nil)
)
"Superclass for all charts to be displayed in an Emacs buffer.")
(defun chart-new-buffer (obj)
"Create a new buffer NAME in which the chart OBJ is displayed.
Returns the newly created buffer."
(with-current-buffer (get-buffer-create (format "*%s*" (oref obj title)))
(chart-mode)
(setq chart-local-object obj)
(current-buffer)))
(cl-defmethod initialize-instance :after ((obj chart) &rest _fields)
"Initialize the chart OBJ being created with FIELDS.
Make sure the width/height is correct."
(oset obj x-width (- (window-width) 10))
(oset obj y-width (- (window-height) 12)))
(defclass chart-axis ()
((name :initarg :name
:initform "Generic Axis")
(loweredge :initarg :loweredge
:initform t)
(name-face :initarg :name-face
:initform 'bold)
(labels-face :initarg :labels-face
:initform 'italic)
(chart :initarg :chart
:initform nil)
)
"Superclass used for display of an axis.")
(defclass chart-axis-range (chart-axis)
((bounds :initarg :bounds
:initform '(0.0 . 50.0))
)
"Class used to display an axis defined by a range of values.")
(defclass chart-axis-names (chart-axis)
((items :initarg :items
:initform nil)
)
"Class used to display an axis which represents different named items.")
(defclass chart-sequence ()
((data :initarg :data
:initform nil)
(name :initarg :name
:initform "Data")
)
"Class used for all data in different charts.")
(defclass chart-bar (chart)
((direction :initarg :direction
:initform 'vertical))
"Subclass for bar charts (vertical or horizontal).")
(cl-defmethod chart-draw ((c chart) &optional buff)
"Start drawing a chart object C in optional BUFF.
Erases current contents of buffer."
(with-silent-modifications
(save-excursion
(if buff (set-buffer buff))
(erase-buffer)
(insert (make-string (window-height (selected-window)) ?\n))
;; Start by displaying the axis
(chart-draw-axis c)
;; Display title
(chart-draw-title c)
;; Display data
(message "Rendering chart...")
(sit-for 0)
(chart-draw-data c)
;; Display key
; (chart-draw-key c)
(message "Rendering chart...done")
)))
(cl-defmethod chart-draw-title ((c chart))
"Draw a title upon the chart.
Argument C is the chart object."
(chart-display-label (oref c title) 'horizontal 0 0 (window-width)
(oref c title-face)))
(cl-defmethod chart-size-in-dir ((c chart) dir)
"Return the physical size of chart C in direction DIR."
(if (eq dir 'vertical)
(oref c y-width)
(oref c x-width)))
(cl-defmethod chart-draw-axis ((c chart))
"Draw axis into the current buffer defined by chart C."
(let ((ymarg (oref c y-margin))
(xmarg (oref c x-margin))
(ylen (oref c y-width))
(xlen (oref c x-width)))
(chart-axis-draw (oref c y-axis) 'vertical ymarg
(if (oref (oref c y-axis) loweredge) nil xlen)
xmarg (+ xmarg ylen))
(chart-axis-draw (oref c x-axis) 'horizontal xmarg
(if (oref (oref c x-axis) loweredge) nil ylen)
ymarg (+ ymarg xlen)))
)
(cl-defmethod chart-axis-draw ((a chart-axis) &optional dir margin zone start end)
"Draw some axis for A in direction DIR with MARGIN in boundary.
ZONE is a zone specification.
START and END represent the boundary."
(chart-draw-line dir (+ margin (if zone zone 0)) start end)
(chart-display-label (oref a name) dir (if zone (+ zone margin 3)
(if (eq dir 'horizontal)
1 0))
start end (oref a name-face)))
(cl-defmethod chart-translate-xpos ((c chart) x)
"Translate in chart C the coordinate X into a screen column."
(let ((range (oref (oref c x-axis) bounds)))
(+ (oref c x-margin)
(round (* (float (- x (car range)))
(/ (float (oref c x-width))
(float (- (cdr range) (car range))))))))
)
(cl-defmethod chart-translate-ypos ((c chart) y)
"Translate in chart C the coordinate Y into a screen row."
(let ((range (oref (oref c y-axis) bounds)))
(+ (oref c x-margin)
(- (oref c y-width)
(round (* (float (- y (car range)))
(/ (float (oref c y-width))
(float (- (cdr range) (car range)))))))))
)
(cl-defmethod chart-axis-draw ((a chart-axis-range) &optional dir margin zone _start _end)
"Draw axis information based upon a range to be spread along the edge.
A is the chart to draw. DIR is the direction.
MARGIN, ZONE, START, and END specify restrictions in chart space."
(cl-call-next-method)
;; We prefer about 5 spaces between each value
(let* ((i (car (oref a bounds)))
(e (cdr (oref a bounds)))
(z (if zone zone 0))
(s nil)
(rng (- e i))
;; want to jump by units of 5 spaces or so
(j (/ rng (/ (chart-size-in-dir (oref a chart) dir) 4)))
p1)
(if (= j 0) (setq j 1))
(while (<= i e)
(setq s
(cond ((> i 999999)
(format "%dM" (/ i 1000000)))
((> i 999)
(format "%dK" (/ i 1000)))
(t
(format "%d" i))))
(if (eq dir 'vertical)
(let ((x (+ (+ margin z) (if (oref a loweredge)
(- (length s)) 1))))
(if (< x 1) (setq x 1))
(chart-goto-xy x (chart-translate-ypos (oref a chart) i)))
(chart-goto-xy (chart-translate-xpos (oref a chart) i)
(+ margin z (if (oref a loweredge) -1 1))))
(setq p1 (point))
(insert s)
(chart-zap-chars (length s))
(put-text-property p1 (point) 'face (oref a labels-face))
(setq i (+ i j))))
)
(cl-defmethod chart-translate-namezone ((c chart) n)
"Return a dot-pair representing a positional range for a name.
The name in chart C of the Nth name resides.
Automatically compensates for direction."
(let* ((dir (oref c direction))
(w (if (eq dir 'vertical) (oref c x-width) (oref c y-width)))
(m (if (eq dir 'vertical) (oref c y-margin) (oref c x-margin)))
(ns (length
(oref (if (eq dir 'vertical) (oref c x-axis) (oref c y-axis))
items)))
(lpn (/ (+ 1.0 (float w)) (float ns)))
)
(cons (+ m (round (* lpn (float n))))
(+ m -1 (round (* lpn (+ 1.0 (float n))))))
))
(cl-defmethod chart-axis-draw ((a chart-axis-names) &optional dir margin zone _start _end)
"Draw axis information based upon A range to be spread along the edge.
Optional argument DIR is the direction of the chart.
Optional arguments MARGIN, ZONE, START and END specify boundaries
of the drawing."
(cl-call-next-method)
;; We prefer about 5 spaces between each value
(let* ((i 0)
(s (oref a items))
(z (if zone zone 0))
(r nil)
(p nil)
(odd nil)
p1)
(while s
(setq odd (= (% (length s) 2) 1))
(setq r (chart-translate-namezone (oref a chart) i))
(if (eq dir 'vertical)
(setq p (/ (+ (car r) (cdr r)) 2))
(setq p (- (+ (car r) (/ (- (cdr r) (car r)) 2))
(/ (length (car s)) 2))))
(if (eq dir 'vertical)
(let ((x (+ (+ margin z) (if (oref a loweredge)
(- (length (car s)))
(length (car s))))))
(if (< x 1) (setq x 1))
(if (> (length (car s)) (1- margin))
(setq x (+ x margin)))
(chart-goto-xy x p))
(chart-goto-xy p (+ (+ margin z) (if (oref a loweredge)
(if odd -2 -1)
(if odd 2 1)))))
(setq p1 (point))
(insert (car s))
(chart-zap-chars (length (car s)))
(put-text-property p1 (point) 'face (oref a labels-face))
(setq i (+ i 1)
s (cdr s))))
)
(cl-defmethod chart-draw-data ((c chart-bar))
"Display the data available in a bar chart C."
(let* ((data (oref c sequences))
(dir (oref c direction))
(odir (if (eq dir 'vertical) 'horizontal 'vertical))
(faces
(if (functionp chart-face-list)
(funcall chart-face-list)
chart-face-list)))
(while data
(if (stringp (car (oref (car data) data)))
;; skip string lists...
nil
;; display number lists...
(let ((i 0)
(seq (oref (car data) data)))
(while seq
(let* ((rng (chart-translate-namezone c i))
(dp (if (eq dir 'vertical)
(chart-translate-ypos c (car seq))
(chart-translate-xpos c (car seq))))
(zp (if (eq dir 'vertical)
(chart-translate-ypos c 0)
(chart-translate-xpos c 0)))
(fc (if faces
(nth (% i (length faces)) faces)
'default)))
(if (< dp zp)
(progn
(chart-draw-line dir (car rng) dp zp)
(chart-draw-line dir (cdr rng) dp zp))
(chart-draw-line dir (car rng) zp (1+ dp))
(chart-draw-line dir (cdr rng) zp (1+ dp)))
(if (= (car rng) (cdr rng)) nil
(chart-draw-line odir dp (1+ (car rng)) (cdr rng))
(chart-draw-line odir zp (car rng) (1+ (cdr rng))))
(if (< dp zp)
(chart-deface-rectangle dir rng (cons dp zp) fc)
(chart-deface-rectangle dir rng (cons zp dp) fc))
)
;; find the bounds, and chart it!
;; for now, only do one!
(setq i (1+ i)
seq (cdr seq)))))
(setq data (cdr data))))
)
(cl-defmethod chart-add-sequence ((c chart) &optional seq axis-label)
"Add to chart object C the sequence object SEQ.
If AXIS-LABEL, then the axis stored in C is updated with the bounds of SEQ,
or is created with the bounds of SEQ."
(if axis-label
(let ((axis (eieio-oref c axis-label)))
(if (stringp (car (oref seq data)))
(let ((labels (oref seq data)))
(if (not axis)
(setq axis (make-instance 'chart-axis-names
:name (oref seq name)
:items labels
:chart c))
(oset axis items labels)))
(let ((range (cons 0 1))
(l (oref seq data)))
(if (not axis)
(setq axis (make-instance 'chart-axis-range
:name (oref seq name)
:chart c)))
(dolist (x l)
(if (< x (car range)) (setcar range x))
(if (> x (cdr range)) (setcdr range x)))
(oset axis bounds range)))
(if (eq axis-label 'x-axis) (oset axis loweredge nil))
(eieio-oset c axis-label axis)
))
(oset c sequences (append (oref c sequences) (list seq))))
;;; Charting optimizers
(cl-defmethod chart-trim ((c chart) max)
"Trim all sequences in chart C to be at most MAX elements long."
(let ((s (oref c sequences)))
(dolist (x s)
(let ((sl (oref x data)))
(if (> (length sl) max)
(setcdr (nthcdr (1- max) sl) nil)))))
)
(cl-defmethod chart-sort ((c chart) pred)
"Sort the data in chart C using predicate PRED.
See `chart-sort-matchlist' for more details."
(let* ((sl (oref c sequences))
(s1 (car sl))
(s2 (car (cdr sl)))
(s nil))
(if (stringp (car (oref s1 data)))
(progn
(chart-sort-matchlist s1 s2 pred)
(setq s (oref s1 data)))
(if (stringp (car (oref s2 data)))
(progn
(chart-sort-matchlist s2 s1 pred)
(setq s (oref s2 data)))
(error "Sorting of chart %s not supported" (eieio-object-name c))))
(if (eq (oref c direction) 'horizontal)
(oset (oref c y-axis) items s)
(oset (oref c x-axis) items s)
))
)
(defun chart-sort-matchlist (namelst numlst pred)
"Sort NAMELST and NUMLST (both sequence objects) based on predicate PRED.
PRED should be the equivalent of `<', except it must expect two
cons cells of the form (NAME . NUM). See `sort' for more details."
;; 1 - create 1 list of cons cells
(let ((newlist nil)
(alst (oref namelst data))
(ulst (oref numlst data)))
(while alst
;; this is reversed, but were are sorting anyway
(setq newlist (cons (cons (car alst) (car ulst)) newlist))
(setq alst (cdr alst)
ulst (cdr ulst)))
;; 2 - Run sort routine on it
(setq newlist (sort newlist pred)
alst nil
ulst nil)
;; 3 - Separate the lists
(while newlist
(setq alst (cons (car (car newlist)) alst)
ulst (cons (cdr (car newlist)) ulst))
(setq newlist (cdr newlist)))
;; 4 - Store them back
(oset namelst data (reverse alst))
(oset numlst data (reverse ulst))))
;;; Utilities
(defun chart-goto-xy (x y)
"Move cursor to position X Y in buffer, and add spaces and CRs if needed."
(let ((indent-tabs-mode nil)
(num (progn (goto-char (point-min)) (forward-line y))))
(if (and (= 0 num) (/= 0 (current-column))) (newline 1))
(if (eobp) (newline num))
(if (< x 0) (setq x 0))
(if (< y 0) (setq y 0))
;; Now, a quicky column moveto/forceto method.
(or (= (move-to-column x) x)
(let ((p (point)))
(indent-to x)
(remove-text-properties p (point) '(face nil))))))
(defun chart-zap-chars (n)
"Zap up to N chars without deleting EOLs."
(if (not (eobp))
(if (< n (- (line-end-position) (point)))
(delete-char n)
(delete-region (point) (line-end-position)))))
(defun chart-display-label (label dir zone start end &optional face)
"Display LABEL in direction DIR in column/row ZONE between START and END.
Optional argument FACE is the property we wish to place on this text."
(if (eq dir 'horizontal)
(let (p1)
(chart-goto-xy (+ start (- (/ (- end start) 2) (/ (length label) 2)))
zone)
(setq p1 (point))
(insert label)
(chart-zap-chars (length label))
(put-text-property p1 (point) 'face face)
)
(let ((i 0)
(stz (+ start (- (/ (- end start) 2) (/ (length label) 2)))))
(while (< i (length label))
(chart-goto-xy zone (+ stz i))
(insert (aref label i))
(chart-zap-chars 1)
(put-text-property (1- (point)) (point) 'face face)
(setq i (1+ i))))))
(defun chart-draw-line (dir zone start end)
"Draw a line using line-drawing characters in direction DIR.
Use column or row ZONE between START and END."
(chart-display-label
(make-string (- end start) (if (eq dir 'vertical) ?| ?\-))
dir zone start end))
(defun chart-deface-rectangle (dir r1 r2 face)
"Colorize a rectangle in direction DIR across range R1 by range R2.
R1 and R2 are dotted pairs. Colorize it with FACE."
(let* ((range1 (if (eq dir 'vertical) r1 r2))
(range2 (if (eq dir 'vertical) r2 r1))
(y (car range2)))
(while (<= y (cdr range2))
(chart-goto-xy (car range1) y)
(put-text-property (point) (+ (point) (1+ (- (cdr range1) (car range1))))
'face face)
(setq y (1+ y)))))
;;; Helpful `I don't want to learn eieio just now' washover functions
(defun chart-bar-quickie (dir title namelst nametitle numlst numtitle
&optional max sort-pred)
"Wash over the complex EIEIO stuff and create a nice bar chart.
Create it going in direction DIR [`horizontal' `vertical'] with TITLE
using a name sequence NAMELST labeled NAMETITLE with values NUMLST
labeled NUMTITLE.
Optional arguments:
Set the chart's max element display to MAX, and sort lists with
SORT-PRED if desired."
(let ((nc (make-instance 'chart-bar
:title title
:key-label "8-m" ; This is a text key pic
:direction dir
))
(iv (eq dir 'vertical)))
(chart-add-sequence nc
(make-instance 'chart-sequence
:data namelst
:name nametitle)
(if iv 'x-axis 'y-axis))
(chart-add-sequence nc
(make-instance 'chart-sequence
:data numlst
:name numtitle)
(if iv 'y-axis 'x-axis))
(if sort-pred (chart-sort nc sort-pred))
(if (integerp max) (chart-trim nc max))
(switch-to-buffer (chart-new-buffer nc))
(chart-draw nc)))
;;; Test code
(defun chart-test-it-all ()
"Test out various charting features."
(interactive)
(chart-bar-quickie 'vertical "Test Bar Chart"
'( "U1" "ME2" "C3" "B4" "QT" "EZ") "Items"
'( 5 -10 23 20 30 -3) "Values")
(if (not (called-interactively-p 'any))
(kill-buffer "*Test Bar Chart*"))
)
;;; Sample utility function
(defun chart-file-count (dir)
"Draw a chart displaying the number of different file extensions in DIR."
(interactive "DDirectory: ")
(message "Collecting statistics...")
(let ((flst (directory-files dir nil nil t))
(extlst (list "<dir>"))
(cntlst (list 0)))
(dolist (f flst)
(let* ((x (file-name-extension f))
(s (if (file-accessible-directory-p (expand-file-name f dir))
"<dir>" x))
(m (member s extlst)))
(unless (null s)
(if m
(cl-incf (car (nthcdr (- (length extlst) (length m)) cntlst)))
(setq extlst (cons s extlst)
cntlst (cons 1 cntlst))))))
;; Let's create the chart!
(chart-bar-quickie 'vertical "Files Extension Distribution"
extlst "File Extensions"
cntlst "# of occurrences"
10
(lambda (a b) (> (cdr a) (cdr b))))
))
(defun chart-space-usage (d)
"Display a top usage chart for directory D."
(interactive "DDirectory: ")
(message "Collecting statistics...")
(let ((nmlst nil)
(cntlst nil)
(b (get-buffer-create " *du-tmp*")))
(set-buffer b)
(erase-buffer)
(insert "cd " d ";du -sk * \n")
(message "Running `cd %s;du -sk *'..." d)
(call-process-region (point-min) (point-max) shell-file-name t
(current-buffer) nil)
(goto-char (point-min))
(message "Scanning output ...")
(while (re-search-forward "^\\([0-9]+\\)[ \t]+\\([^ \n]+\\)$" nil t)
(let* ((nam (buffer-substring (match-beginning 2) (match-end 2)))
(num (buffer-substring (match-beginning 1) (match-end 1))))
(setq nmlst (cons nam nmlst)
;; * 1000 to put it into bytes
cntlst (cons (* (string-to-number num) 1000) cntlst))))
(if (not nmlst)
(error "No files found!"))
(chart-bar-quickie 'vertical (format "Largest files in %s" d)
nmlst "File Name"
cntlst "File Size"
10
(lambda (a b) (> (cdr a) (cdr b))))
))
(defun chart-emacs-storage ()
"Chart the current storage requirements of Emacs."
(interactive)
(let* ((data (garbage-collect)))
;; Let's create the chart!
(chart-bar-quickie 'vertical "Emacs Runtime Storage Usage"
(mapcar (lambda (x) (symbol-name (car x))) data)
"Storage Items"
(mapcar (lambda (x) (* (nth 1 x) (nth 2 x)))
data)
"Bytes")))
(defun chart-emacs-lists ()
"Chart out the size of various important lists."
(interactive)
(let* ((names '("buffers" "frames" "processes" "faces"))
(nums (list (length (buffer-list))
(length (frame-list))
(length (process-list))
(length (face-list))
)))
(if (fboundp 'x-display-list)
(setq names (append names '("x-displays"))
nums (append nums (list (length (x-display-list))))))
;; Let's create the chart!
(chart-bar-quickie 'vertical "Emacs List Size Chart"
names "Various Lists"
nums "Objects")))
(defun chart-rmail-from ()
"If we are in an rmail summary buffer, then chart out the froms."
(interactive)
(if (not (eq major-mode 'rmail-summary-mode))
(error "You must invoke chart-rmail-from in an rmail summary buffer"))
(let ((nmlst nil)
(cntlst nil))
(save-excursion
(goto-char (point-min))
(while (re-search-forward "-[A-Z][a-z][a-z] +\\(\\w+\\)@\\w+" nil t)
(let* ((nam (buffer-substring (match-beginning 1) (match-end 1)))
(m (member nam nmlst)))
(message "Scanned username %s" nam)
(if m
(let ((cell (nthcdr (- (length nmlst) (length m)) cntlst)))
(setcar cell (1+ (car cell))))
(setq nmlst (cons nam nmlst)
cntlst (cons 1 cntlst))))))
(chart-bar-quickie 'vertical "Username Occurrence in RMAIL box"
nmlst "User Names"
cntlst "# of occurrences"
10
(lambda (a b) (> (cdr a) (cdr b))))
))
(provide 'chart)
;;; chart.el ends here