Advanced Search

@fractastical Google Chart URL Gen

/ Published in: Other
Save to your folder(s)

Expand | Embed | Plain Text

Copy this code and paste it in your HTML 
  1.      // The step is the distance between each label on the y axis
  2.      public Integer calculateStepSize(Integer highestVal)
  3.      {
  4. 	     	//calculates the appropriate step to display on the y axis
  5. 		  List<Integer> possibleSteps = New Integer[]{1,2,5,10,20,50};  
  6. 		  for(Integer i= (possibleSteps.size() - 1);i >= 0; i--) {
  7. 		  	System.debug('HIGH DIV 6:' + (highestVAl / 6) + ' POSS STEP:' + possibleSteps[i]);  
  8. 		  	if ((highestVal / 6) > possibleSteps[i])  
  9. 		  		return possibleSteps[i];
  10. 		  }
  11. 		  return 1;            
  12.      }
  13.  
  14.      public Integer roundUpToClosestStep(Integer highestVal, Integer step)
  15.      {
  16.      	  return highestVal + (step - (math.mod(highestVal,step)));   
  17.      }	
  18.  
  19.      //The idea is that any parameter could be overwritten with a Map specifying a different value pair (hash)
  20.     //Data integrity should also be insured (e.g. that the length of both the data and labels are the same)
  21.     public String generateChartURL(String title, List<Integer> incomingData, List<String> incomingLabels, Map <String,String> valuePairs)
  22.     {  
  23.      	if (incomingData.size() == 0)
  24.     		return '';
  25.  
  26.     	String dataString = '';
  27.     	Integer highest = 0;
  28.     	for (Integer d : incomingData) {
  29.     		if (d > highest)
  30.     			highest = d;
  31.     		dataString += d + ',';
  32.     	}
  33.     	 dataString = dataString.substring(0, dataString.length() - 1);
  34.  
  35.      	 Integer step = calculateStepSize(highest);
  36. 		 highest = roundUpToClosestStep(highest, step);
  37. 		//System.debug('STEP:' + step);  
  38.  
  39. 		 String chartType = 'cht=bvg'; //vertical bar chart
  40. 		 String colors = 'chco=4D89F9,C6D9FD';       
  41. 		 String spacing = 'chbh=20,4,20';    
  42. 		 String chartSize = 'chs=600x200';                          
  43.  
  44. 		 //y axis, start value, highest value, step	size
  45. 		 String YAxisRange = 'chxr=1,0,' + Highest + ',' + step;    
  46. 		 String scaling = 'chds=0,' + Highest;
  47. 		 String data = 'chd=t:' + dataString;        
  48.  
  49. 		 String chartLabels = 'chxt=x,y&chxl=0:|';
  50.  
  51. 		 //System.debug('LABEL SIZE:' + incomingLabels.size());
  52. 		 for (String l: incomingLabels)
  53. 		 	chartLabels += l + '|';   
  54. 		 chartLabels = chartLabels.substring(0, chartLabels.length() - 1);
  55.  
  56. 		 //System.debug('CHART LABEL:'+chartlabels);
  57.  
  58. 		 String chartTitle = 'chtt=' + title.replaceAll(' ','+');  
  59.  
  60.  
  61. 		 String chartPath = 'http://chart.apis.google.com/chart?';    
  62. 		 return  chartPath + chartType + '&' + ChartTitle + '&' + YAxisRange + '&' + colors + '&' + Scaling + '&' + chartLabels + '&' + spacing + '&'  + Data + '&' + chartSize;
  63.     }
  64.  

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.