Script Library: 1213 scripts
 

charts-api.r

REBOL [ Title: "Google Chart API" Version: 0.1.1 Author: "Christopher Ross-Gill" Home: http://www.ross-gill.com/ Date: 9-Aug-2008 Exports: [chart] File: %charts-api.r Purpose: {Generates a URL to access the Google Charts API} Library: [ Level: 'beginner Platform: 'all Type: [function module tool dialect] Domain: [dialects http ldc web] License: 'cc-by-sa ] ] chart: use [ root types ; settings map uses envelop ; core functions form-simple form-color form-list form-lists form-data ; type helpers ][ root: http://chart.apis.google.com/chart? types: [ line "lc" line/xy "lxy" sparkline "ls" bar "bvs" bar/horizontal "bhs" pie "p3" pie/flat "p" map "t" ] uses: func [proto [block!] spec [block!]][ proto: context proto func [args [block! object!]] compose/only [ args: make (proto) args do bind (spec) args ] ] map: func [series [any-block!] action [any-function!]][ series: copy/deep series while [not tail? series][ series: change/part series action series/1 1 ] head series ] envelop: func [val [any-type!]][either any-block? val [val][reduce [val]]] form-simple: use [to-61 codes][ codes: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" to-61: func [val [number! none!]][ if none? val [return "_"] val: max min 1 val 0 pick codes 1 + round 61 * val ] func [[catch] data [block!] separator [any-type!]][ rejoin map data :to-61 ] ] form-color: func [color [tuple!] /local out][ out: copy "" repeat val length? color [ append out back back tail to-hex color/:val ] lowercase out ] form-list: func [block [block!] separator [char! string!]][ remove rejoin map block func [val][ join separator switch/default type?/word val [ decimal! [round/to val 0.1] tuple! [form-color val] none! [-1] ][ switch/default val [ color ["bg"] chart ["c"] all ["a"] solid ["s"] gradient ["lg"] stripes ["ls"] ][val] ] ] ] form-lists: func [ block [block!] separator [char! string!] encode [function!] /with subseparator [char! string!] ][ remove rejoin map block func [block][ join separator encode block subseparator ] ] form-data: func [data [block!] /local out val /text /flat /simple /label][ unless parse data: copy/deep data [some block!][ data: reduce [data] ] case [ simple [join "s:" form-lists data "," :form-simple] flat [form-lists/with data "," :form-list ""] label [form-list data/1 "|"] text [join "t:" form-lists/with data "|" :form-list ","] true [form-lists/with data "|" :form-list ","] ] ] uses [ verbose: false debug: func [val][either verbose [probe val][val]] out*: "" emit: func ['arg val][repend out* ["&" arg "=" form val]] title: none size: 320x240 type: 'line simple: false data: [] color: colors: labels: area: bars: none ][ clear out* emit cht any [select types type form type] emit chs size emit chd either simple [form-data/simple data][form-data/text data] case/all [ title [emit chtt title] any [color color: colors][emit chco form-data reduce envelop color] labels [emit chl form-data/label envelop labels] area [emit chf form-data area] bars [emit chbh form-data bars] ] join root debug next out* ] ]
halt ;; to terminate script if DO'ne from webpage
Notes