svn: r157

collects/mztake/demos/random/random-Xs-test-v3.ss

@@ -1,36 +0,0 @@
-(require (lib "graphics.ss" "graphics")
-         (lifted mzscheme
-                 make-hash-table
-                 hash-table-put!
-                 hash-table-get))
-
-
-(open-graphics)
-(define window (open-viewport "Debugger" 600 500))
-((draw-viewport window) (make-rgb 0.95 0.95 0.95))
-
-
-(define-mztake-process p ("random-Xs-v3.ss" [x-trace 6 26 bind 'num]))
-
-(define largest-bin 0)
-(define valcount (make-hash-table))
-
-(hold (x-trace . -=> .(printf-b "largest count: ~a" largest-bin)))
-
-
-(map-e (lambda (x)
-         (let* ([new-cnt (add1 (hash-table-get valcount x (lambda () 0)))]
-                [color (/ new-cnt (add1 largest-bin))])
-           
-           (when (> new-cnt largest-bin) (set! largest-bin new-cnt))
-           
-           (hash-table-put! valcount x new-cnt)
-           
-           ((draw-solid-rectangle window) (make-posn x  (- 500 (* 4 new-cnt)))
-                                          1 4 ;; width height
-                                          (make-rgb 0 (* 0.75 color) color))))
-       x-trace)
-
-(printf-b "count: ~a" (count-b x-trace))
-
-(start/resume p)

collects/mztake/demos/random/random-Xs-test.ss

@@ -16,19 +16,14 @@
         change in each bin.
 
      Try looking for small groupings of bins where all are light, or all
-     are dark -- these represent trends in the numbers.
+     are dark -- these represent small trends in the numbers.
 
      Look for tortoises that stay low and black, and hares which are very
      active and bright.
 
-     Notice how the bottom tends to be rather patchy with lots of color
-     variation (the "start-up" phase of the random number generator),
-     and then towards the middle of the screen, most of the blues have
-     settled down and evened out.
-
      The bars drag a bit when moving upwards (the height goes up by 2, but
      the redrawing of the latest color goes down 10 pixels) so that you can
-     spot vertical and horizontal trends more easily.  |#
+     spot vertical trends more easily.  |#
 
 
 (require (lib "graphics.ss" "graphics")
@@ -56,7 +51,7 @@
 
 
 
-(define-mztake-process p ("random-Xs.ss" [x-trace 4 6 bind 'x]))
+(define-mztake-process p ("random-xs.ss" [x-trace 4 6 bind 'x]))
 #| * Create a process to debug random-xs.ss
 
    * Add a tracepoint at line 4, column 6; in the program,

collects/mztake/demos/random/random-Xs-v3.ss

@@ -1,7 +0,0 @@
-(module |random-Xs-v3| mzscheme
-  
-  (define seed-list (call-with-input-file "rand.txt"
-                      (lambda (file)
-                        (let loop ([num (read file)])
-                          (if (eof-object? num) '()
-                              (loop (read file))))))))

collects/mztake/demos/random/random-Xs.ss

@@ -1,5 +1,5 @@
-(module |random-Xs| mzscheme
+(module random-xs mzscheme
-  (define (run)
+  (define (run)
-    (let loop ([x (random 100)])
+    (let loop ([x (random 100)])
-      (loop (random 100))))
+      (loop (random 100))))
   (run))

collects/mztake/demos/random/random-xs-test.ss

@@ -1,115 +1,107 @@
-#|   The program being debugged (a module in the file "random-xs.ss") runs an infinite loop,
+#|   The program being debugged (a module in the file "random-xs.ss") runs an infinite loop,
-     binding "x" to a random number between [0,100) each iteration.
+     binding "x" to a random number between [0,100) each iteration.
-     
+     
-     This MzTake script draws a histogram of the values of x seen over time,
+     This MzTake script draws a histogram of the values of x seen over time,
-     in sync with the execution of "random-xs.ss". This will run until one
+     in sync with the execution of "random-xs.ss". This will run until one
-     bar reaches the top of the screen.     
+     bar reaches the top of the screen.     
-
+
-     This histogram provides three pieces of information:
+     This histogram provides three pieces of information:
-      * Each bar represents a bin, the height represents how many times
+      * Each bar represents a bin, the height represents how many times
-        that "random" number was generated.
+        that "random" number was generated.
-
+
-      * The brighter the blue, the faster that bin is growing compared
+      * The brighter the blue, the faster that bin is growing compared
-        to the others. The darker, the slower.
+        to the others. The darker, the slower.
-
+
-      * You can see a history of speeds over time based on how the colors
+      * You can see a history of speeds over time based on how the colors
-        change in each bin.
+        change in each bin.
-
+
-     Try looking for small groupings of bins where all are light, or all
+     Try looking for small groupings of bins where all are light, or all
-     are dark -- these represent trends in the numbers.
+     are dark -- these represent small trends in the numbers.
-
+
-     Look for tortoises that stay low and black, and hares which are very
+     Look for tortoises that stay low and black, and hares which are very
-     active and bright.
+     active and bright.
-
+
-     Notice how the bottom tends to be rather patchy with lots of color
+     The bars drag a bit when moving upwards (the height goes up by 2, but
-     variation (the "start-up" phase of the random number generator),
+     the redrawing of the latest color goes down 10 pixels) so that you can
-     and then towards the middle of the screen, most of the blues have
+     spot vertical trends more easily.  |#
-     settled down and evened out.
+
-
+
-     The bars drag a bit when moving upwards (the height goes up by 2, but
+(require (lib "graphics.ss" "graphics")
-     the redrawing of the latest color goes down 10 pixels) so that you can
+         #| Needed for open-graphics, open-viewport, and draw-solid-ellipse |#
-     spot vertical and horizontal trends more easily.  |#
+         
-
+         (lifted mzscheme
-
+                 make-hash-table
-(require (lib "graphics.ss" "graphics")
+                 hash-table-put!
-         #| Needed for open-graphics, open-viewport, and draw-solid-ellipse |#
+                 hash-table-get))
-         
+#|       "Lifted" is explained in FrTime's own documentation (plt/collects/frtime/doc.txt)
-         (lifted mzscheme
+          Quickly put, lifting extends the functions listed above so they can take FrTime time-varying
-                 hash-table-for-each
+          values (such as MzTake traces) as arguments. |#
-                 make-hash-table
+
-                 hash-table-put!
+
-                 hash-table-get))
+
-#|       "Lifted" is explained in FrTime's own documentation (plt/collects/frtime/doc.txt)
+(open-graphics)
-          Quickly put, lifting extends the functions listed above so they can take FrTime time-varying
+(define window (open-viewport "Debugger" 600 500))
-          values (such as MzTake traces) as arguments. |#
+((draw-viewport window) (make-rgb 0.95 0.95 0.95))
-
+#| This file doesn't animate a list of objects since the number of
-
+   objects quickly reaches the thousands (slowing drawing time severly),
-
+   and they are stationary -- so we just keep drawing the circles at
-(open-graphics)
+   their new heights based on the value in the hashtable.
-(define window (open-viewport "Debugger" 600 500))
+
-((draw-viewport window) (make-rgb 0.95 0.95 0.95))
+   See the doc for more information on this kind of drawing. |#
-#| This file doesn't animate a list of objects since the number of
+
-   objects quickly reaches the thousands (slowing drawing time severly),
+
-   and they are stationary -- so we just keep drawing the circles at
+
-   their new heights based on the value in the hashtable.
+(define-mztake-process p ("random-xs.ss" [x-trace 4 6 bind 'x]))
-
+#| * Create a process to debug random-xs.ss
-   See the doc for more information on this kind of drawing. |#
+
-
+   * Add a tracepoint at line 4, column 6; in the program,
-
+     this is right before the next iteration of the loop is called,
-
+     ->(loop (random 200))
-(define-mztake-process p ("random-Xs.ss" [x-trace 4 6 bind 'x]))
+
-#| * Create a process to debug random-xs.ss
+   * At this tracepoint, define "x-trace" to a FrTime eventstream that
-
+     recieves events containing the latest value of "x" seen,
-   * Add a tracepoint at line 4, column 6; in the program,
+     every time the code at line 4, column 6, is reached. |#
-     this is right before the next iteration of the loop is called,
+
-     ->(loop (random 200))
+(define largest-bin 0)
-
+(define valcount (make-hash-table))
-   * At this tracepoint, define "x-trace" to a FrTime eventstream that
+#| this will hold the counts for the histogram
-     recieves events containing the latest value of "x" seen,
+   x is the key, and the number of times x shows up is the value |#
-     every time the code at line 4, column 6, is reached. |#
+
-
+
-(define largest-bin 0)
+(hold (x-trace . -=> .(printf-b "largest count: ~a" largest-bin)))
-(define valcount (make-hash-table))
+#| Prints out the largest count every time we get a new x-trace event |#
-#| this will hold the counts for the histogram
+
-   x is the key, and the number of times x shows up is the value |#
+
-
+(map-e (lambda (x)
-(define total-count (count-b x-trace))
+         (let* ([new-cnt (add1 (hash-table-get valcount x (lambda () 0)))]
-
+                [color (/ new-cnt (add1 largest-bin))])
-(printf-b "count: ~a" total-count)
+           
-#| prints the count of how many events x-trace got,
+           (when (= largest-bin 250)
-   aka how many values are in the histogram and on the screen. |#
+             (kill p))
-
+           ; when one of the bars reaches the top of the screen, kill the program.
-
+           
-(hold (x-trace . -=> .(printf-b "highest bin count: ~a" largest-bin)))
+           (when (> new-cnt largest-bin) (set! largest-bin new-cnt))
-#| Prints out the largest count every time we get a new x-trace event |#
+           ; keep track of the largest count
-
+           
-
+           (hash-table-put! valcount x new-cnt)
-(map-e (lambda (x)
+           ;; increment the value in the hashtable, starting from 0 if none exists.
-         (let ([new-cnt (add1 (hash-table-get valcount x (lambda () 0)))])
+           
-           
+           ((draw-solid-rectangle window) (make-posn (* x 6)  (- 500 (* 2 new-cnt)))
-           (when (zero? (modulo (value-now total-count) 1000))
+                                          6 10 ;; width height
-             (hash-table-for-each
+                                          (make-rgb 0 (* 0.75 color) color))))
-              valcount
+       x-trace)
-              (lambda (x v)
+#| Every time x-trace gets a new value, take this latest value and pass it to a function
-                (let ([color (min 1 (* 50 (/ v 1000)))])
+   which increments the count in the hashtable, and draws a circle in the window at
-                  ((draw-solid-rectangle window) (make-posn (* x 6)
+   (* x 6) pixels from the left, and the height is (2 * the latest count in the hashtable for that x),
-                                                            (- 500 (* 10 (/ (value-now total-count) 1000))))
+   making a color (MAKE-RGB) that is lighter based on how fast it is growing.
-                                                 6 10 ;; width height
+|#
-                                                 (make-rgb 0 (* 0.75 color) color)))))
+
-             (set! valcount (make-hash-table))
+
-             (set! largest-bin 0))
+(printf-b "count: ~a" (count-b x-trace))
-           
+#| prints the count of how many events x-trace got,
-           (when (> new-cnt largest-bin) (set! largest-bin new-cnt))
+   aka how many values are in the histogram and on the screen.
-           ; keep track of the largest count
+|#
-           
+
-           (hash-table-put! valcount x new-cnt)))
+
-       ;; increment the value in the hashtable, starting from 0 if none exists.
+(start/resume p)
-       
+;; Start the process for random-xs.ss
-       x-trace)
-#| Every time x-trace gets a new value, take this latest value and pass it to a function
-   which increments the count in the hashtable, and draws a circle in the window at
-   (* x 6) pixels from the left, and the height is (2 * the latest count in the hashtable for that x),
-   making a color (MAKE-RGB) that is lighter based on how fast it is growing. |#
-
-
-(start/resume p) ;; Start the process for random-xs.ss

collects/mztake/demos/random/random-xs.ss

@@ -0,0 +1,5 @@
+(module random-xs mzscheme
+  (define (run)
+    (let loop ([x (random 100)])
+      (loop (random 100))))
+  (run))