ID instead of value is used for values pulled from entity-based fields

As data value in the chart the ID is used and not the field value.

In the View configuration, do you have the field selected with a checkbox in the "Data" column? If you could post a screenshot of the configuration of your display format with the chart configuration open, that would help me reproduce this problem. As is, it looks like you might just have the view misconfigured.

Another way of saying this: what's displayed in the table is not necessarily what's used by the chart. In the chart configuration, you must select which fields will be used as chart data explicitly.

I can confirm this bug. Below is my exported Views

$view = new view();
$view->name = 'chart';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'users';
$view->human_name = 'chart';
$view->core = 7;
$view->api_version = '3.0';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Master */
$handler = $view->new_display('default', 'Master', 'default');
$handler->display->display_options['title'] = 'chart';
$handler->display->display_options['use_more_always'] = FALSE;
$handler->display->display_options['access']['type'] = 'perm';
$handler->display->display_options['access']['perm'] = 'access user profiles';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'none';
$handler->display->display_options['style_plugin'] = 'chart';
$handler->display->display_options['style_options']['type'] = 'column';
$handler->display->display_options['style_options']['library'] = '';
$handler->display->display_options['style_options']['label_field'] = 'name';
$handler->display->display_options['style_options']['data_fields'] = array(
  'field_gender' => 'field_gender',
  'name' => 0,
  'field_age' => 0,
  'created' => 0,
);
$handler->display->display_options['style_options']['field_colors'] = array(
  'name' => '#2f7ed8',
  'field_age' => '#0d233a',
  'field_gender' => '#8bbc21',
  'created' => '#910000',
);
$handler->display->display_options['style_options']['title_position'] = 'in';
$handler->display->display_options['style_options']['width'] = '';
$handler->display->display_options['style_options']['height'] = '';
$handler->display->display_options['style_options']['xaxis_labels_rotation'] = '0';
$handler->display->display_options['style_options']['yaxis_title'] = 'custom lallalalala ';
$handler->display->display_options['style_options']['yaxis_labels_rotation'] = '0';
/* Field: User: Name */
$handler->display->display_options['fields']['name']['id'] = 'name';
$handler->display->display_options['fields']['name']['table'] = 'users';
$handler->display->display_options['fields']['name']['field'] = 'name';
$handler->display->display_options['fields']['name']['label'] = '';
$handler->display->display_options['fields']['name']['alter']['word_boundary'] = FALSE;
$handler->display->display_options['fields']['name']['alter']['ellipsis'] = FALSE;
$handler->display->display_options['fields']['name']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['name']['link_to_user'] = FALSE;
/* Field: User: Age */
$handler->display->display_options['fields']['field_age']['id'] = 'field_age';
$handler->display->display_options['fields']['field_age']['table'] = 'field_data_field_age';
$handler->display->display_options['fields']['field_age']['field'] = 'field_age';
$handler->display->display_options['fields']['field_age']['settings'] = array(
  'thousand_separator' => '',
  'prefix_suffix' => 0,
);
/* Field: User: Gender */
$handler->display->display_options['fields']['field_gender']['id'] = 'field_gender';
$handler->display->display_options['fields']['field_gender']['table'] = 'field_data_field_gender';
$handler->display->display_options['fields']['field_gender']['field'] = 'field_gender';
$handler->display->display_options['fields']['field_gender']['type'] = 'list_key';
/* Field: User: Created date */
$handler->display->display_options['fields']['created']['id'] = 'created';
$handler->display->display_options['fields']['created']['table'] = 'users';
$handler->display->display_options['fields']['created']['field'] = 'created';
$handler->display->display_options['fields']['created']['date_format'] = 'short';
/* Filter criterion: User: Active */
$handler->display->display_options['filters']['status']['id'] = 'status';
$handler->display->display_options['filters']['status']['table'] = 'users';
$handler->display->display_options['filters']['status']['field'] = 'status';
$handler->display->display_options['filters']['status']['value'] = '1';
$handler->display->display_options['filters']['status']['group'] = 1;
$handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page');
$handler->display->display_options['path'] = 'chart';

Thanks @skyredwang for the confirmation. I suspect the problem here is that Drupal saves a value of "0" for unchecked checkboxes:

$handler->display->display_options['style_options']['data_fields'] = array(
  'field_gender' => 'field_gender',
  'name' => 0,
  'field_age' => 0,
  'created' => 0,
);

The format that is expected by the Views handler is shorter:

$handler->display->display_options['style_options']['data_fields'] = array(
  'field_gender' => 'field_gender',
);

So I think all we need to do is run array_filter() on the options and the unexpected ones will be trimmed out. Could you guys try this patch and see if it helps?

I've committed this patch as it seems to solve the problem. Please reopen if you're still experiencing the problem where the wrong field is being used to provide data.

After reproducing #2051807: Notice: Undefined index: #type in charts_pre_render_element(), it looks like this issue is not solved. Incidentally, *that* problem may have been solved by my patch in #6, but the current problem still remains: User IDs are being used instead of the actual data.

Now it looks like this problem originates from using entity-based values. Charts module is reading the raw value from SQL queries when it builds its values. In the case of queries where data is not actually retrieved from a SQL query, but instead from fully-loaded entities, the data structure is different.

Okay I think this patch should fix the problem. As I said in #9, "entity-based values" (or "entity-based field values" more accurately) are formatted in a way that requires additional effort. After looking at the Table display style some, it looks like in order to work with field values we need to render everything in the view all at once, then then loop through the rendered results. Previously we were just using the raw values or rendering a field one at a time.

I think this patch has fixed the problem. I'll make a new beta for testing.

2.0-beta3 is now available which should make Charts' integration with field-based values work well in Views.