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Analysing signatures of 2nd EU referendum petition

The snippet looks at the number of signatures for the petition to do a second Brexit referendum. It uses JSON type provider to parse the data from the web site & Google charts to visualize the results.

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open Deedle
open FSharp.Data
open XPlot.GoogleCharts

// Download the number of signitures from the petition GOV web site
// See: https://petition.parliament.uk/petitions/131215
type Ref = JsonProvider<"https://petition.parliament.uk/petitions/131215.json">
let ref = Ref.GetSample()

// Look at signatures by country - sorting the data shows
// that there is -3605 signatures from Andorra :-/
ref.Data.Attributes.SignaturesByCountry
|> Seq.map (fun i -> i.Name, i.SignatureCount)
|> series 
|> Series.sort
|> Series.rev

// Draw a chart of signatures coming from non-UK countries
let ca = ColorAxis(colors=[|"#30d020"; "#e0e030"; "#e08030"; "#ff3000" |])
ref.Data.Attributes.SignaturesByCountry
|> Seq.filter (fun i -> i.Name <> "United Kingdom")
|> Seq.map (fun i -> i.Name, i.SignatureCount)
|> Chart.Geo
|> Chart.WithOptions(Options(colorAxis=ca))
namespace Deedle
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namespace FSharp

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namespace Microsoft.FSharp
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namespace FSharp.Data

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namespace Microsoft.FSharp.Data
namespace XPlot
namespace XPlot.GoogleCharts
type Ref = JsonProvider<...>

Full name: Script.Ref
type JsonProvider

Full name: FSharp.Data.JsonProvider


<summary>Typed representation of a JSON document.</summary>
       <param name='Sample'>Location of a JSON sample file or a string containing a sample JSON document.</param>
       <param name='SampleIsList'>If true, sample should be a list of individual samples for the inference.</param>
       <param name='RootName'>The name to be used to the root type. Defaults to `Root`.</param>
       <param name='Culture'>The culture used for parsing numbers and dates. Defaults to the invariant culture.</param>
       <param name='Encoding'>The encoding used to read the sample. You can specify either the character set name or the codepage number. Defaults to UTF8 for files, and to ISO-8859-1 the for HTTP requests, unless `charset` is specified in the `Content-Type` response header.</param>
       <param name='ResolutionFolder'>A directory that is used when resolving relative file references (at design time and in hosted execution).</param>
       <param name='EmbeddedResource'>When specified, the type provider first attempts to load the sample from the specified resource
          (e.g. 'MyCompany.MyAssembly, resource_name.json'). This is useful when exposing types generated by the type provider.</param>
       <param name='InferTypesFromValues'>If true, turns on additional type inference from values.
          (e.g. type inference infers string values such as "123" as ints and values constrained to 0 and 1 as booleans.)</param>
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val ref : JsonProvider<...>.Root

Full name: Script.ref

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type 'T ref = Ref<'T>

Full name: Microsoft.FSharp.Core.ref<_>
JsonProvider<...>.GetSample() : JsonProvider<...>.Root
property JsonProvider<...>.Root.Data: JsonProvider<...>.Data
property JsonProvider<...>.Data.Attributes: JsonProvider<...>.Attributes
property JsonProvider<...>.Attributes.SignaturesByCountry: JsonProvider<...>.SignaturesByCountry []
module Seq

from Microsoft.FSharp.Collections
val map : mapping:('T -> 'U) -> source:seq<'T> -> seq<'U>

Full name: Microsoft.FSharp.Collections.Seq.map
val i : JsonProvider<...>.SignaturesByCountry
property JsonProvider<...>.SignaturesByCountry.Name: string
property JsonProvider<...>.SignaturesByCountry.SignatureCount: int
val series : observations:seq<'a * 'b> -> Series<'a,'b> (requires equality)

Full name: Deedle.F# Series extensions.series
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module Series

from Deedle

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type Series =
  new : ?type:string -> Series
  member ShouldSerializeannotations : unit -> bool
  member ShouldSerializeareaOpacity : unit -> bool
  member ShouldSerializecolor : unit -> bool
  member ShouldSerializecurveType : unit -> bool
  member ShouldSerializefallingColor : unit -> bool
  member ShouldSerializelineWidth : unit -> bool
  member ShouldSerializepointShape : unit -> bool
  member ShouldSerializepointSize : unit -> bool
  member ShouldSerializerisingColor : unit -> bool
  ...

Full name: XPlot.GoogleCharts.Configuration.Series

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type Series<'K,'V (requires equality)> =
  interface IFsiFormattable
  interface ISeries<'K>
  new : pairs:seq<KeyValuePair<'K,'V>> -> Series<'K,'V>
  new : keys:'K [] * values:'V [] -> Series<'K,'V>
  new : keys:seq<'K> * values:seq<'V> -> Series<'K,'V>
  new : index:IIndex<'K> * vector:IVector<'V> * vectorBuilder:IVectorBuilder * indexBuilder:IIndexBuilder -> Series<'K,'V>
  member After : lowerExclusive:'K -> Series<'K,'V>
  member Aggregate : aggregation:Aggregation<'K> * observationSelector:Func<DataSegment<Series<'K,'V>>,KeyValuePair<'TNewKey,OptionalValue<'R>>> -> Series<'TNewKey,'R> (requires equality)
  member Aggregate : aggregation:Aggregation<'K> * keySelector:Func<DataSegment<Series<'K,'V>>,'TNewKey> * valueSelector:Func<DataSegment<Series<'K,'V>>,OptionalValue<'R>> -> Series<'TNewKey,'R> (requires equality)
  member AsyncMaterialize : unit -> Async<Series<'K,'V>>
  ...

Full name: Deedle.Series<_,_>

--------------------
new : ?type:string -> Series

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new : pairs:seq<System.Collections.Generic.KeyValuePair<'K,'V>> -> Series<'K,'V>
new : keys:seq<'K> * values:seq<'V> -> Series<'K,'V>
new : keys:'K [] * values:'V [] -> Series<'K,'V>
new : index:Indices.IIndex<'K> * vector:IVector<'V> * vectorBuilder:Vectors.IVectorBuilder * indexBuilder:Indices.IIndexBuilder -> Series<'K,'V>
val sort : series:Series<'K,'V> -> Series<'K,'V> (requires equality and comparison)

Full name: Deedle.Series.sort
val rev : series:Series<'K,'T> -> Series<'K,'T> (requires equality)

Full name: Deedle.Series.rev
val ca : ColorAxis

Full name: Script.ca
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type ColorAxis =
  new : unit -> ColorAxis
  member ShouldSerializecolors : unit -> bool
  member ShouldSerializelegend : unit -> bool
  member ShouldSerializemaxValue : unit -> bool
  member ShouldSerializeminValue : unit -> bool
  member ShouldSerializevalues : unit -> bool
  member colors : string []
  member legend : Legend
  member maxValue : int
  member minValue : int
  ...

Full name: XPlot.GoogleCharts.Configuration.ColorAxis

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new : unit -> ColorAxis
val filter : predicate:('T -> bool) -> source:seq<'T> -> seq<'T>

Full name: Microsoft.FSharp.Collections.Seq.filter
type Chart =
  static member Annotation : data:seq<#seq<DateTime * 'V * string * string>> * ?Labels:seq<string> * ?Options:Options -> GoogleChart (requires 'V :> value)
  static member Annotation : data:seq<DateTime * #value * string * string> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  static member Area : data:seq<#seq<'K * 'V>> * ?Labels:seq<string> * ?Options:Options -> GoogleChart (requires 'K :> key and 'V :> value)
  static member Area : data:seq<#key * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  static member Bar : data:seq<#seq<'K * 'V>> * ?Labels:seq<string> * ?Options:Options -> GoogleChart (requires 'K :> key and 'V :> value)
  static member Bar : data:seq<#key * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  static member Bubble : data:seq<string * #value * #value * #value * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  static member Bubble : data:seq<string * #value * #value * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  static member Bubble : data:seq<string * #value * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  static member Calendar : data:seq<DateTime * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
  ...

Full name: XPlot.GoogleCharts.Chart
static member Chart.Geo : data:seq<string * #value * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
static member Chart.Geo : data:seq<string * #value> * ?Labels:seq<string> * ?Options:Options -> GoogleChart
static member Chart.WithOptions : options:Options -> chart:GoogleChart -> GoogleChart
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type Options =
  new : unit -> Options
  member ShouldSerializeaggregationTarget : unit -> bool
  member ShouldSerializeallValuesSuffix : unit -> bool
  member ShouldSerializeallowHtml : unit -> bool
  member ShouldSerializealternatingRowStyle : unit -> bool
  member ShouldSerializeanimation : unit -> bool
  member ShouldSerializeannotations : unit -> bool
  member ShouldSerializeannotationsWidth : unit -> bool
  member ShouldSerializeareaOpacity : unit -> bool
  member ShouldSerializeavoidOverlappingGridLines : unit -> bool
  ...

Full name: XPlot.GoogleCharts.Configuration.Options

--------------------
new : unit -> Options
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More information

Link:http://fssnip.net/7Qa
Posted:9 months ago
Author:Tomas Petricek
Tags: f# data , fslab , jsonprovider , xplot