function apachesolr_stats_encodedata in Apache Solr Statistics 7

Same name and namespace in other branches

1. 6.3 apachesolr_stats.module \apachesolr_stats_encodedata()
2. 6 apachesolr_stats.module \apachesolr_stats_encodedata()

Encode data using Chart's simple encoding. See http://code.google.com/apis/chart/formats.html#simple

Parameters

array $chd: an array of integer values to encode.

integer $chd_min: an integer with the smallest value to encode.

integer $chd_max: an integer with the greatest value to encode.

Return value

string a string representing the Google Charts API simple encoding of the data.

2 calls to apachesolr_stats_encodedata()

apachesolr_stats_chart in ./apachesolr_stats.module

Generate an IMG tag with the URL to generate a chart using Google Charts API.

apachesolr_stats_facet_usage_graph in ./apachesolr_stats.module

Returns the <img> tag for a Google chart with the facet usage

File

./apachesolr_stats.module, line 449

Keeps and reports statistics about Apache Solr usage and performance.

Code

function apachesolr_stats_encodedata($chd, $chd_min, $chd_max) {
  $encoder_string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  $encoded_values = '';
  if (is_array($chd)) {
    foreach ($chd as $value) {
      $encoded_values .= substr($encoder_string, ($value - $chd_min) / $chd_max * 61, 1);
    }
  }

  // Google does not like single-valued line charts; fix that.
  if (strlen($encoded_values) == 1) {
    $encoded_values = "99";
  }
  return $encoded_values;
}