How Can I Get Selected Data On Histogram Charts??

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Dustqm Sybolls

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Mar 6, 2014, 8:03:27 AM3/6/14
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I added listener like this;

google.visualization.events.addListener(chart, 'select', myClickHandler);

My listener function like this;

                      function myClickHandler(){
var selection = chart.getSelection();
var message = '';

 for (var i = 0; i < selection.length; i++) {
   var item = selection[i];
   var value = data.getValue(item.row, 0);
   if (item.row != null && item.column != null) {
     message += '{row:' + item.row + ',column:' + item.column + '} / Value: ' + value;
   } else if (item.row != null) {
     message += '{row:' + item.row + '}';
   } else if (item.column != null) {
     message += '{column:' + item.column + '}';
   }
 }
 if (message != '') {
 alert('You selected ' + message);
 }
}

But value is not true.. Because when I select, it gives me place on which column is on it.. But I want the row of data array..

So how can I get selected data value??

Sergey Grabkovsky

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Mar 6, 2014, 11:02:44 AM3/6/14
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Hello, it appears you found a bug with our Histogram selection. We will be working to fix this, but unfortunately I do not have an estimate for when this will be fixed.

- Sergey


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Dustqm Sybolls

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Mar 7, 2014, 1:33:50 AM3/7/14
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Could you inform me with reply this question??

6 Mart 2014 Perşembe 18:02:44 UTC+2 tarihinde Sergey yazdı:
Hello, it appears you found a bug with our Histogram selection. We will be working to fix this, but unfortunately I do not have an estimate for when this will be fixed.

- Sergey


On Thu, Mar 6, 2014 at 8:03 AM, Dustqm Sybolls <dus...@gmail.com> wrote:
I added listener like this;

google.visualization.events.addListener(chart, 'select', myClickHandler);

My listener function like this;

                      function myClickHandler(){
var selection = chart.getSelection();
var message = '';

 for (var i = 0; i < selection.length; i++) {
   var item = selection[i];
   var value = data.getValue(item.row, 0);
   if (item.row != null && item.column != null) {
     message += '{row:' + item.row + ',column:' + item.column + '} / Value: ' + value;
   } else if (item.row != null) {
     message += '{row:' + item.row + '}';
   } else if (item.column != null) {
     message += '{column:' + item.column + '}';
   }
 }
 if (message != '') {
 alert('You selected ' + message);
 }
}

But value is not true.. Because when I select, it gives me place on which column is on it.. But I want the row of data array..

So how can I get selected data value??

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Sergey Grabkovsky

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Mar 7, 2014, 9:39:02 AM3/7/14
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I am not sure which question you are referring to. If you are referring to your original original question, "So how can I get selected data value?", then the answer is that you cannot at the moment, as there is a bug in the code and it returns the wrong selection. We are aware of this issue and will be working to fix it.

- Sergey


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Kevan Killion

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May 6, 2014, 11:25:21 AM5/6/14
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As of May 6th, 2014 this bug seems to still be present.

- Sergey



- Sergey


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LE Sacks

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Jun 10, 2015, 3:20:29 AM6/10/15
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Still no action on this?

It really would be so useful to get bin values for selections...

cheers

- Sergey


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Sergey Grabkovsky

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Jun 10, 2015, 3:49:56 PM6/10/15
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Hi,

It appears to work for me in this example: http://jsfiddle.net/q91h2wj7/

Can you give me an example of where it doesn't work?

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LE Sacks

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Aug 6, 2015, 9:31:11 AM8/6/15
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My bad.
That works - but what I was looking for was to retrieve the number of entries in each bin... which is a different question.
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Sergey Grabkovsky

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Aug 6, 2015, 9:39:34 AM8/6/15
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Yeah, I don't believe we have any way of retrieving the number of entries in each bin.

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LE Sacks

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Aug 7, 2015, 5:56:47 AM8/7/15
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Hi,
thanks for confirming that I haven't missed something!
Shame, though... I wouldn't mind being able to do that...

cheers
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Ekta Agarwal

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Sep 10, 2015, 4:08:48 AM9/10/15
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Is it possible for me to get the bin information?
Basically, the user has selected a bar in the histogram. I want information about the bar. 
The start and end for the column on the haxis would be useful information. 
Can I get that? 

Thanks, 
Ekta 

Daniel LaLiberte

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Sep 10, 2015, 8:05:41 AM9/10/15
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Ekta,

Information about the bins is not available at this time.  We are planning on overhauling the Histogram chart at some point to provide much more capability, along with better integration with the rest of the charts, so we will keep this request in mind.

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Joshua Horn

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Nov 10, 2015, 5:59:25 PM11/10/15
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Any update on when we might be able to get the information about what is in a selected bin on a histogram chart? It would be very helpful to me...


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Drew Baden

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Mar 12, 2017, 9:19:49 PM3/12/17
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I have a similar question:  I make a histogram and draw it, and it looks just fine.  Then I want to loop over all the values in the plot:  that is, I want to know for each bin now many entries in that bin.   I tired chart.getSelection() but the .length returned 0.

Any ideas?
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