Plotting/Charting Packages

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Andrew Lindsay
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Plotting/Charting Packages

Post by Andrew Lindsay »

Are there any source code charting packages that are available for the Mac?

I'd like a package that would be possible to display basic scientific graphs, or ideally something like RMChart, only on the MacOS platform or that could be cross compiled to other platforms.

Regards

Andrew
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IdeasVacuum
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Re: Plotting/Charting Packages

Post by IdeasVacuum »

If you can't find a package like RM Chart, you will still be able to DIY with PB. Nice example here:

http://rosettacode.org/wiki/Plot_coordi ... #PureBasic
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jesperbrannmark
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Re: Plotting/Charting Packages

Post by jesperbrannmark »

Please dont ask me to defend this code.... but it works
You can see more at http://code.google.com/apis/chart/inter ... chart.html
I saw an example somewhere here in the forum that got google maps to an imagegadget, probably possible to do the same here.

The charts are pretty nice and you have tons to choose from.

Code: Select all

a.s="<html>"+#CRLF$
a.s+"  <head>"+#CRLF$
a.s+"    <script type="+Chr(34)+"text/javascript"+Chr(34)+" src="+Chr(34)+"https://www.google.com/jsapi"+Chr(34)+"></script>"+#CRLF$
a.s+"    <script type="+Chr(34)+"text/javascript"+Chr(34)+">"+#CRLF$
a.s+"      google.load("+Chr(34)+"visualization"+Chr(34)+", "+Chr(34)+"1"+Chr(34)+", {packages:["+Chr(34)+"corechart"+Chr(34)+"]});"+#CRLF$
a.s+"      google.setOnLoadCallback(drawChart);"+#CRLF$
a.s+"      function drawChart() {"+#CRLF$
a.s+"        var data = new google.visualization.DataTable();"+#CRLF$
a.s+"        data.addColumn('string', 'Year');"+#CRLF$
a.s+"        data.addColumn('number', 'Sales');"+#CRLF$
a.s+"        data.addColumn('number', 'Expenses');"+#CRLF$
a.s+"        data.addRows(["+#CRLF$
a.s+"          ['2004', 1000, 400],"+#CRLF$
a.s+"          ['2005', 1170, 460],"+#CRLF$
a.s+"          ['2006', 660, 1120],"+#CRLF$
a.s+"          ['2007', 1030, 540]"+#CRLF$
a.s+"        ]);"+#CRLF$
a.s+""+#CRLF$
a.s+"        var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));"+#CRLF$
a.s+"        chart.draw(data, {width: 400, height: 240, title: 'Company Performance',"+#CRLF$
a.s+"                          hAxis: {title: 'Year', titleTextStyle: {color: '#FF0000'}}"+#CRLF$
a.s+"                         });"+#CRLF$
a.s+"      }"+#CRLF$
a.s+"    </script>"+#CRLF$
a.s+"  </head>"+#CRLF$
a.s+"  <body>"+#CRLF$
a.s+"    <div id="+Chr(34)+"chart_div"+Chr(34)+"></div>"+#CRLF$
a.s+"  </body>"+#CRLF$
a.s+"</html>"+#CRLF$
OpenFile(0,GetTemporaryDirectory()+"temp.html")
WriteString(0,a.s)
CloseFile(0)
OpenWindow(0,0,0,460,300,"CHART")
WebGadget(0,0,0,460,300,"file://"+GetTemporaryDirectory()+"temp.html")
Repeat
Until WaitWindowEvent()=#PB_Event_CloseWindow
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IdeasVacuum
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Re: Plotting/Charting Packages

Post by IdeasVacuum »

Defend your code Sir!

Sorry, couldn't resist :mrgreen:
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jesperbrannmark
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Re: Plotting/Charting Packages

Post by jesperbrannmark »

The result is pretty awsome anyway :-)
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Re: Plotting/Charting Packages

Post by IdeasVacuum »

It certainly is :)
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Re: Plotting/Charting Packages

Post by jesperbrannmark »

Time to be more proud of the code :-)

This code does:
* Plot a google chart api chart. There is a ton of them to choose from
* Paint it in a window as a imagegadget.

Benefit of imagegadget vs webgadget:
* Speed
* Memory
* Compatibility

(the webgadget with javascript activated can have a nice interactive chart with mouseovers, changing colors and other stuff... but it will cost you preformance, i prefer this static image variant).

Code: Select all

; Google chart as imagegadget.
; Jesper Brännmark
; Based on Use Google Maps in PureBasic (Easy Procedure)
; Original discussion thread for Google Maps in Purebasic:  http://www.purebasic.fr/english/viewtopic.php?t=46428

;This is usage of URL:
;https://chart.googleapis.com/chart?cht=<chart_type>&chd=<chart_data>&chs=<chart_size>&...additional_parameters...
;I use http instead of https and it works just as good.
;Google information on static image charts:
;http://code.google.com/apis/chart/image/docs/making_charts.html

;See this a starting ground to do something, its not something complete.
InitNetwork()
UsePNGImageDecoder()


Procedure.l getChartImage(cht.s = "p3", chd.s = "t:60,40", width.l = 250, height.l=100, chl.s="Hello|World")
  ;----------------------------------------------------------------------------------
  RetVal = 0
  myRequestTwo.s = "/chart?cht="+URLEncoder(cht.s)+"&chd="+URLEncoder(chd.s)+"&chs="+Str(width)+"x"+Str(height)+"&chl="+URLEncoder(chl.s)
  myConnection = OpenNetworkConnection("chart.googleapis.com", 80, #PB_Network_TCP)
  
  If myConnection > 0
    
    myRequest.s = "GET "+ myRequestTwo + " HTTP/1.0" + #CRLF$
    myRequest.s + "Content-Type: application/x-www-form-urlencoded; charset=iso-8859-1" + #CRLF$
    myRequest.s + "Host: chart.googleapis.com" + #CRLF$ + #CRLF$
    *buffer = AllocateMemory(65535)
    *bufferTwo = AllocateMemory(65535)
    bfTwoPtr = 0
    mSize = 65535
    SendNetworkString(myConnection, myRequest)
    dwBytes = 1
    While dwBytes > 0
      
      dwBytes = ReceiveNetworkData(myConnection, *buffer, 65535)
      
      If dwBytes > 0
        
        If (*bufferTwo + dwBytes) >= mSize
          mSize + 65535
          *bufferTwo = ReAllocateMemory(*bufferTwo, mSize)
        EndIf
        
        CopyMemory(*buffer, (*bufferTwo+bfTwoPtr), dwBytes)
        bfTwoPtr + dwBytes
      EndIf
      
    Wend
    
    CloseNetworkConnection(myConnection)
    FreeMemory(*buffer)
    dblCrlf.s = #CRLF$+#CRLF$
    found = 0
    For k = 0 To bfTwoPtr
      
      If k > bfTwoPtr
        Break
      EndIf
      
      If PeekS(*bufferTwo+k, 4) = dblCrlf
        found = k
        headerInfo.s = PeekS(*bufferTwo, k)
        dataBeginSpot = (k + 4)
        *dataBegin = (*bufferTwo + dataBeginSpot)
        dataLength    = (bfTwoPtr - dataBeginSpot)
        Break
      EndIf
      
    Next
    
    RetVal = CatchImage(#PB_Any, *dataBegin, dataLength)
    FreeMemory(*bufferTwo)
  Else
    RetVal = -1
  EndIf
  
  ProcedureReturn RetVal
  
EndProcedure

myImage = getChartImage()

If IsImage(myImage)
  
  OpenWindow(0, 0, 0, 250,100, "Test", #PB_Window_ScreenCentered|#PB_Window_SystemMenu)
  ImageGadget(1, 0, 0, 250,100, ImageID(myImage))
  Repeat : Until WaitWindowEvent() = #PB_Event_CloseWindow
  FreeImage(myImage)
Else
  MessageRequester("Didn't get a chart image!", "Hmm, Strange...")
  
EndIf
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