Error in content$data[[1]] : subscript out of bounds in getInsights

[theclue]

Hello Pablo,

first of all, tnx for your work..this package is really a lifeboat, to me!

Said that, I must say that I'm not able to make getInsights working. Whatever parameters I put, I always get this error: Error in content$data[[1]] : subscript out of bounds

Some examples ->

From a page I own:
circle <- getInsights(object_id="9thcirclegames", token = fb.connection, metric = "page_impressions")

circle <- getInsights("me", token = fb.connection, metric = "page_impressions")

A post by me (not the page):
example_post <- circle <- getInsights(object_id="10152670074275267_10152659686895267", token = fb.connection, metric = "post_impressions", period='days_28')

perhaps I'm using the function in the wrong way?

[chipoglesby]

Just to echo @theclue thank you for all of your work!

Currently, I'm having the same issues when trying to query getInsights.

Example:
insights <- getInsights(object_id='xx_pageid_xx',
token=fb_oauth, metric='post_impressions', period='days_28')
R returns:
Error in content$data[[1]] : subscript out of bounds

The package does work for getUsers and getPage, which is how I found my page's id. I'm not sure if you have any ideas what could be causing this?

Thanks,

Chip

[lbollar]

Like @theclue, I get the same subscript out of bounds error for getInsights(). I am trying to query this information for a page I was given access to, and by using the Graph API Explorer from developers.facebook.com, I was able to confirm that I do have authority to query this information.

I actually get two different errors based on whether I try post_impressions or page_impressions, and this might just be due to stupid user error, but like @theclue I have tried different parameters and cannot get the function to work.

insights <- getInsights(object_id="XXXXXXXXXXX", token=fb_oauth, metric='page_impressions')
Error in insightsDataToDF(content$data, content$data[[1]]$values) :
argument "metric" is missing, with no default

insights <- getInsights(object_id="XXXXXXXXXXX", token=fb_oauth, metric='post_impressions')
Error in content$data[[1]] : subscript out of bounds

[weatherlisa]

Rfacebook is a great package! I'm loving playing around with it.

I am having the same problem as @lbollar with getInsights()
I get the error:
insights <- getInsights(object_id="XXXXXXXXXXX", token=fb_oauth, metric='post_impressions')
Error in content$data[[1]] : subscript out of bounds

Has anyone had any luck yet?

[shenjunfei]

I also have the same problem like you guys.
Every time I call getInsights():
insights <- getInsights(object_id = "xxxxxxxxxx", token = fb_oauth, metric = "page_impressions")
an error is returned:
Error in content$data[[1]] : subscript out of bounds

I also tried to debug this by
debug(getInsights)
and execute the function line by line
function(object_id, token, metric, period = "day", n = 5)
The first line
url <- paste0("https://graph.facebook.com/", object_id, "/insights/", metric, "?period=", period)
and second line
content <- callAPI(url = url, token = token)
are OK, but the error occurred when I browse to the third line
l <- length(content$data[[1]]$values)
Error in content$data[[1]] : subscript out of bounds

If I skip this and the following several lines about l
if (l == 0) {
stop("No public posts mentioning the string were found")
}
I finally get an output a few lines away here
if (length(content$data) == 0) {
stop("No public posts mentioning the string were found")
}

Maybe "No public posts mentioning the string were found" is exactly what I should get for this input?

And the error says
Error in content$data[[1]] : subscript out of bounds
It seems to say that the first element of the first list content$data does not exist, because the list content$data is empty?
Actually after executing the following line
content <- callAPI(url = url, token = token)
I find content is a list of 2, the first is data, and content$data is an empty list. Therefore content$data[[1]]$values does not exist and this line breaks down:
l <- length(content$data[[1]]$values)
I'm wondering what is supposed to be in the list content$data when everything goes right, and what is wrong here.

[mpiccirilli]

You will only be able to use getInsights() if you're an owner or admin of the page you're calling.

@shenjunfei yes, the error is thrown because content$data is empty. There isn't anything wrong with receiving the "subscript out of bounds" error, but an additional condition could be added to handle the case when content$data is empty. Below is what it would look like if you used this function on a page you own/admin.

$data
$data[[1]]
$data[[1]]$id
[1] "230719923749613/insights/page_views/day"

$data[[1]]$name
[1] "page_views"

$data[[1]]$period
[1] "day"

$data[[1]]$values
$data[[1]]$values[[1]]
$data[[1]]$values[[1]]$value
[1] 2

$data[[1]]$values[[1]]$end_time
[1] "2015-03-22T07:00:00+0000"

$data[[1]]$values[[2]]
$data[[1]]$values[[2]]$value
[1] 4

$data[[1]]$values[[2]]$end_time
[1] "2015-03-23T07:00:00+0000"

$data[[1]]$values[[3]]
$data[[1]]$values[[3]]$value
[1] 25

$data[[1]]$values[[3]]$end_time
[1] "2015-03-24T07:00:00+0000"

$data[[1]]$title
[1] "Daily Page Views"

$data[[1]]$description
[1] "Daily: Page views (Total Count)"

[SDBanswers]

I'm an administrator for the page that I'm concerned with, but getInsights() doesn't work for me, either. I can't figure out what the problem is.

[pablobarbera]

I fixed getInsights and everything should work now. (Sorry it took so long -- I didn't have access to a FB page with insights activated, so I had to create it first to see where the error was.)