Cannot access DataTable.getNumberOfColumns()

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rishu oberoi

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Aug 18, 2015, 4:53:50 PM8/18/15
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This is how I am creating my data table. Just including a snippet below. 

 link_wfc_core_stats_data = google.visualization.arrayToDataTable(dataArray);
calculatePercentagesWithGlobalFactor(link_wfc_core_stats_data,PIPELINE_LINK_ALL);
var link_wfc_core_stats_table = new google.visualization.Table(document.getElementById('link_wfc_core_stats_table'));
link_wfc_core_stats_table.draw(link_wfc_core_stats_data, table_options);

However, once the table is ready, when I try to use the table as - link_wfc_core_stats_table.getNumberOfColumns() - I get an error saying that the method getNumberOfColumns does not exist.

Why is that? 

Sergey Grabkovsky

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Aug 18, 2015, 4:56:07 PM8/18/15
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Hi Rishu,

The Table visualization (google.visualization.Table) is a separate thing from the DataTable (google.visualization.DataTable, or google.visualization.arrayToDataTable). DataTables have getNumberOfColumns, but Tables don't. You're trying to call it on the Table (link_wfc_core_stats_table) instead of your DataTable (link_wfc_core_stats_data).

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rishu oberoi

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Aug 18, 2015, 5:01:48 PM8/18/15
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Thanks for your reply. I actually tried link_wfc_core_stats_data as well but getting the same error. But I tried a jsfiddle and I see that it works. Probably I am doing something else wrong. 
I am passing the data in a function as follows

 $( "#downloadCSV" ).click(function(link_wfc_core_stats_data) {//accessing the method here}


On Tuesday, 18 August 2015 15:56:07 UTC-5, Sergey wrote:
Hi Rishu,

The Table visualization (google.visualization.Table) is a separate thing from the DataTable (google.visualization.DataTable, or google.visualization.arrayToDataTable). DataTables have getNumberOfColumns, but Tables don't. You're trying to call it on the Table (link_wfc_core_stats_table) instead of your DataTable (link_wfc_core_stats_data).

On Tue, Aug 18, 2015 at 4:53 PM rishu oberoi <rishu...@gmail.com> wrote:
This is how I am creating my data table. Just including a snippet below. 

 link_wfc_core_stats_data = google.visualization.arrayToDataTable(dataArray);
calculatePercentagesWithGlobalFactor(link_wfc_core_stats_data,PIPELINE_LINK_ALL);
var link_wfc_core_stats_table = new google.visualization.Table(document.getElementById('link_wfc_core_stats_table'));
link_wfc_core_stats_table.draw(link_wfc_core_stats_data, table_options);

However, once the table is ready, when I try to use the table as - link_wfc_core_stats_table.getNumberOfColumns() - I get an error saying that the method getNumberOfColumns does not exist.

Why is that? 

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Sergey Grabkovsky

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Aug 19, 2015, 9:37:45 AM8/19/15
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I'm pretty sure that jquery won't pass a datatable to your function. In your function, the variable 'link_wfc_core_stats_data' will be a click event, not a DataTable.

On Tue, Aug 18, 2015 at 5:01 PM rishu oberoi <rishu...@gmail.com> wrote:
Thanks for your reply. I actually tried link_wfc_core_stats_data as well but getting the same error. But I tried a jsfiddle and I see that it works. Probably I am doing something else wrong. 
I am passing the data in a function as follows

 $( "#downloadCSV" ).click(function(link_wfc_core_stats_data) {//accessing the method here}


On Tuesday, 18 August 2015 15:56:07 UTC-5, Sergey wrote:
Hi Rishu,

The Table visualization (google.visualization.Table) is a separate thing from the DataTable (google.visualization.DataTable, or google.visualization.arrayToDataTable). DataTables have getNumberOfColumns, but Tables don't. You're trying to call it on the Table (link_wfc_core_stats_table) instead of your DataTable (link_wfc_core_stats_data).

On Tue, Aug 18, 2015 at 4:53 PM rishu oberoi <rishu...@gmail.com> wrote:
This is how I am creating my data table. Just including a snippet below. 

 link_wfc_core_stats_data = google.visualization.arrayToDataTable(dataArray);
calculatePercentagesWithGlobalFactor(link_wfc_core_stats_data,PIPELINE_LINK_ALL);
var link_wfc_core_stats_table = new google.visualization.Table(document.getElementById('link_wfc_core_stats_table'));
link_wfc_core_stats_table.draw(link_wfc_core_stats_data, table_options);

However, once the table is ready, when I try to use the table as - link_wfc_core_stats_table.getNumberOfColumns() - I get an error saying that the method getNumberOfColumns does not exist.

Why is that? 

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Rishu Oberoi

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Aug 19, 2015, 10:29:10 AM8/19/15
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I agree, I'm passing link_wfc_core_stats_data and not table now. 
I am passing the data in a function as follows

 $( "#downloadCSV" ).click(function(link_wfc_core_stats_data) {//accessing the method here}

For some reason, I get the error saying getNumberOfColumns() is not a method, even when I pass data. 
What might be the reason?

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Rishupreet 

rishu oberoi

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Aug 19, 2015, 11:43:05 AM8/19/15
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Attached a snapshot of the error I see. 

I agree, I'm passing link_wfc_core_stats_data and not table now. 
I am passing the data in a function as follows

 $( "#downloadCSV" ).click(function(link_wfc_core_stats_data) {//accessing the method here}

For some reason, I get the error saying getNumberOfColumns() is not a method, even when I pass data. 
What might be the reason?



On Wednesday, 19 August 2015 09:29:10 UTC-5, rishu oberoi wrote:
I agree, I'm passing link_wfc_core_stats_data and not table now. 
I am passing the data in a function as follows

 $( "#downloadCSV" ).click(function(link_wfc_core_stats_data) {//accessing the method here}

For some reason, I get the error saying getNumberOfColumns() is not a method, even when I pass data. 
What might be the reason?
On Wed, Aug 19, 2015 at 8:37 AM, 'Sergey Grabkovsky' via Google Visualization API <google-visualization-api@googlegroups.com> wrote:
I'm pretty sure that jquery won't pass a datatable to your function. In your function, the variable 'link_wfc_core_stats_data' will be a click event, not a DataTable.

On Tue, Aug 18, 2015 at 5:01 PM rishu oberoi <rishu...@gmail.com> wrote:
Thanks for your reply. I actually tried link_wfc_core_stats_data as well but getting the same error. But I tried a jsfiddle and I see that it works. Probably I am doing something else wrong. 
I am passing the data in a function as follows

 $( "#downloadCSV" ).click(function(link_wfc_core_stats_data) {//accessing the method here}


On Tuesday, 18 August 2015 15:56:07 UTC-5, Sergey wrote:
Hi Rishu,

The Table visualization (google.visualization.Table) is a separate thing from the DataTable (google.visualization.DataTable, or google.visualization.arrayToDataTable). DataTables have getNumberOfColumns, but Tables don't. You're trying to call it on the Table (link_wfc_core_stats_table) instead of your DataTable (link_wfc_core_stats_data).

On Tue, Aug 18, 2015 at 4:53 PM rishu oberoi <rishu...@gmail.com> wrote:
This is how I am creating my data table. Just including a snippet below. 

 link_wfc_core_stats_data = google.visualization.arrayToDataTable(dataArray);
calculatePercentagesWithGlobalFactor(link_wfc_core_stats_data,PIPELINE_LINK_ALL);
var link_wfc_core_stats_table = new google.visualization.Table(document.getElementById('link_wfc_core_stats_table'));
link_wfc_core_stats_table.draw(link_wfc_core_stats_data, table_options);

However, once the table is ready, when I try to use the table as - link_wfc_core_stats_table.getNumberOfColumns() - I get an error saying that the method getNumberOfColumns does not exist.

Why is that? 

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Regards
Rishupreet 
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Sergey Grabkovsky

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Aug 19, 2015, 11:44:55 AM8/19/15
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It still doesn't look like you're passing the data, you're just using the same name but it will be a different thing. If you're doing exactly what you say you're doing, everything should work, but these issues usually come from user error. If you link to a page, I can tell you exactly what to fix, but from the one line you showed me, I still maintain that the variable "link_wfc_core_stats_data" isn't a DataTable, but a click event which won't have getNumberOfColumns() defined (because it's not a DataTable).

To view this discussion on the web visit https://groups.google.com/d/msgid/google-visualization-api/CA%2BzX6%2BZLCjwdk1hx0ruf%2BAfKK6us8DbO8sn6wwPxE1r9yKOrKQ%40mail.gmail.com.

rishu oberoi

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Aug 19, 2015, 1:46:33 PM8/19/15
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You are right, when I stopped passing link_wfc_core_stats_data in the click event, it worked fine. 
Thanks!
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Regards
Rishupreet 

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