Started a clone of the matplotlib cookbook.

Author: Mauer-Oats

info.rkt

@@ -1,7 +1,7 @@
 #lang info
 (define collection "plot-cookbook")
 (define deps '("base"))
-(define build-deps '("scribble-lib" "racket-doc" "rackunit-lib" "infix" "threading" "math/statistics"))
+(define build-deps '("scribble-lib" "racket-doc" "rackunit-lib" "infix" "threading" "math/statistics" "data-frame" "csv-reading"))
 (define scribblings '(("scribblings/plot-cookbook.scrbl" ())))
 (define pkg-desc "Description Here")
 (define version "0.0")

scribblings/basic-cook.scrbl

@@ -0,0 +1,73 @@
+#lang scribble/manual
+@(require "common.rkt" plot threading data-frame)
+
+@(define plot-eval-df
+  (let ([eval  (make-base-eval)])
+    (eval '(begin
+             (require racket/math racket/match racket/list racket/draw racket/class
+                      plot/pict
+                      plot/utils
+		      data-frame)))
+    eval))
+
+@title{Basic Recipes}
+
+Inspired by the @(hyperlink "https://github.com/PacktPublishing/Matplotlib-3.0-Cookbook"
+"Matplotlib Cookbook"), this section contains 
+some recipes that begin at the very beginning.
+
+@section{Two Points}
+
+A line through (0, 1.5) and (1, 3).
+
+@interaction[#:eval plot-eval
+                    (eval:alts (require plot/pict) (void))
+(plot
+ (lines (list (vector 0 1.5)
+              (vector 1 3.0))))]
+
+Thicker and more colorful lines, with axes labels and a title.
+
+@interaction[#:eval plot-eval
+                    (eval:alts (require plot/pict) (void))
+(parameterize [(line-width 2)]
+  (plot (list (lines (list #(0 1.5) #(1 3.0)) #:color 'blue)
+              (lines (list #(0 3.5) #(1 2.5)) #:color 'orange))
+        #:title "Interactive Plot"
+        #:x-label "X-axis"
+        #:y-label "Y-axis"))]
+
+@section{Getting Data}
+
+I advise using the data-frame package to import your data. It is easy
+to work with and does not require dropping into "lower level" operations
+to do things like parse strings into numbers.
+
+One way to get data from an external source is to write it to a CSV
+file. The file would look like this:
+
+@verbatim{x,y
+1,1
+2,4
+3,9
+4,16
+5,25}
+
+We put the data into a string so this tutorial does not need any
+external files. As a user, you would use a single string that crosses
+multiple lines, not using the embedded @tt{\n} used
+below. For example, you could copy and paste the comma-separated x and y
+coordinates into the string.
+
+The @racket{df-select*} function is used to extract the specified
+columns from a data frame and turn them into a list of vectors, one
+for each row. This format is suitable for @racket{lines}.
+
+@interaction[#:eval plot-eval-df
+                    (eval:alts (require plot data-frame) (void))
+
+(define csv-data "x,y\n1,1\n2,4\n3,9\n4,16\n5,25")
+(define csv-port (open-input-string csv-data))
+(define df1 (df-read/csv csv-port))
+(plot (lines (df-select* df1 "x" "y")))]
+

scribblings/plot-cookbook.scrbl

@@ -22,6 +22,7 @@ For more about Plot see @racketmodname[plot].
 
 @include-section["violin.scrbl"]
 
+@include-section["basic-cook.scrbl"]
 
 @close-plot-eval[]