/** * Generates a big graph with the number of best results * @param array */ static function generate_exercise_result_graph($attempts) { $exercise_title = strip_tags($attempts['title']); $attempts = $attempts['data']; $my_exercise_result_array = $exercise_result = array(); if (empty($attempts)) { return null; } foreach ($attempts as $attempt) { if (api_get_user_id() == $attempt['exe_user_id']) { if ($attempt['exe_weighting'] != 0) { $my_exercise_result_array[] = $attempt['exe_result'] / $attempt['exe_weighting']; } } else { if ($attempt['exe_weighting'] != 0) { $exercise_result[] = $attempt['exe_result'] / $attempt['exe_weighting']; } } } //Getting best result rsort($my_exercise_result_array); $my_exercise_result = 0; if (isset($my_exercise_result_array[0])) { $my_exercise_result = $my_exercise_result_array[0] * 100; } $max = 100; $pieces = 5; $part = round($max / $pieces); $x_axis = array(); $final_array = array(); $my_final_array = array(); for ($i = 1; $i <= $pieces; $i++) { $sum = 1; if ($i == 1) { $sum = 0; } $min = ($i - 1) * $part + $sum; $max = $i * $part; $x_axis[] = $min . " - " . $max; $count = 0; foreach ($exercise_result as $result) { $percentage = $result * 100; if ($percentage >= $min && $percentage <= $max) { $count++; } } $final_array[] = $count; if ($my_exercise_result >= $min && $my_exercise_result <= $max) { $my_final_array[] = 1; } else { $my_final_array[] = 0; } } //Fix to remove the data of the user with my data for ($i = 0; $i <= count($my_final_array); $i++) { if (!empty($my_final_array[$i])) { $my_final_array[$i] = $final_array[$i] + 1; //Add my result $final_array[$i] = 0; } } // Dataset definition $dataSet = new pData(); $dataSet->addPoints($final_array, 'Serie1'); $dataSet->addPoints($my_final_array, 'Serie2'); $dataSet->addPoints($x_axis, 'Serie3'); $dataSet->setSerieDescription('Serie1', get_lang('Score')); $dataSet->setSerieDescription('Serie2', get_lang('MyResults')); $dataSet->setAbscissa('Serie3'); $dataSet->setXAxisName(get_lang('Score')); $dataSet->normalize(100, "%"); $dataSet->loadPalette(api_get_path(SYS_CODE_PATH) . 'palettes/pchart/default.color', true); // Cache definition $cachePath = api_get_path(SYS_ARCHIVE_PATH); $myCache = new pCache(array('CacheFolder' => substr($cachePath, 0, strlen($cachePath) - 1))); $chartHash = $myCache->getHash($dataSet); if ($myCache->isInCache($chartHash)) { $imgPath = api_get_path(SYS_ARCHIVE_PATH) . $chartHash; $myCache->saveFromCache($chartHash, $imgPath); $imgPath = api_get_path(WEB_ARCHIVE_PATH) . $chartHash; } else { /* Create the pChart object */ $widthSize = 480; $heightSize = 250; $fontSize = 8; $myPicture = new pImage($widthSize, $heightSize, $dataSet); /* Turn of Antialiasing */ $myPicture->Antialias = false; /* Add a border to the picture */ $myPicture->drawRectangle(0, 0, $widthSize - 1, $heightSize - 1, array('R' => 0, 'G' => 0, 'B' => 0)); /* Set the default font */ $myPicture->setFontProperties(array('FontName' => api_get_path(SYS_FONTS_PATH) . 'opensans/OpenSans-Regular.ttf', 'FontSize' => 10)); /* Write the chart title */ $myPicture->drawText(250, 20, $exercise_title, array('FontSize' => 12, 'Align' => TEXT_ALIGN_BOTTOMMIDDLE)); /* Define the chart area */ $myPicture->setGraphArea(50, 50, $widthSize - 20, $heightSize - 30); /* Draw the scale */ $scaleSettings = array('GridR' => 200, 'GridG' => 200, 'GridB' => 200, 'DrawSubTicks' => true, 'CycleBackground' => true, 'Mode' => SCALE_MODE_MANUAL, 'ManualScale' => array('0' => array('Min' => 0, 'Max' => 100))); $myPicture->drawScale($scaleSettings); /* Turn on shadow computing */ $myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10)); /* Draw the chart */ $myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10)); $settings = array('DisplayValues' => true, 'DisplaySize' => $fontSize, 'DisplayR' => 0, 'DisplayG' => 0, 'DisplayB' => 0, 'DisplayOrientation' => ORIENTATION_HORIZONTAL, 'Gradient' => false, 'Surrounding' => 30, 'InnerSurrounding' => 25); $myPicture->drawStackedBarChart($settings); $legendSettings = array('Mode' => LEGEND_HORIZONTAL, 'Style' => LEGEND_NOBORDER); $myPicture->drawLegend($widthSize / 2, 30, $legendSettings); /* Write and save into cache */ $myCache->writeToCache($chartHash, $myPicture); $imgPath = api_get_path(SYS_ARCHIVE_PATH) . $chartHash; $myCache->saveFromCache($chartHash, $imgPath); $imgPath = api_get_path(WEB_ARCHIVE_PATH) . $chartHash; } return $imgPath; }
/** * This method return a graph containing information about evaluations * inside courses in sessions, it's used inside get_block method for * showing it inside dashboard interface * @return string img html */ public function get_evaluations_courses_in_sessions_graph() { $graphs = array(); if (!empty($this->sessions)) { $session_ids = array_keys($this->sessions); foreach ($session_ids as $session_id) { $courses_code = array_keys(Tracking::get_courses_list_from_session($session_id)); $courses_graph = array(); foreach ($courses_code as $course_code) { $cats = Category::load(null, null, $course_code, null, null, $session_id); if (isset($cats) && isset($cats[0])) { $alleval = $cats[0]->get_evaluations(null, true, $course_code); $alllinks = $cats[0]->get_links(null, true); $users = GradebookUtils::get_all_users($alleval, $alllinks); $datagen = new FlatViewDataGenerator($users, $alleval, $alllinks); $evaluation_sumary = $datagen->get_evaluation_sumary_results(); if (!empty($evaluation_sumary)) { $items = array_keys($evaluation_sumary); $max = $min = $avg = array(); foreach ($evaluation_sumary as $evaluation) { $max[] = $evaluation['max']; $min[] = $evaluation['min']; $avg[] = $evaluation['avg']; } // Dataset definition $dataSet = new pData(); $dataSet->addPoints($min, 'Serie3'); $dataSet->addPoints($avg, 'Serie2'); $dataSet->addPoints($max, 'Serie1'); $dataSet->addPoints($items, 'Labels'); $dataSet->setSerieDescription('Serie1', get_lang('Max')); $dataSet->setSerieDescription('Serie2', get_lang('Avg')); $dataSet->setSerieDescription('Serie3', get_lang('Min')); $dataSet->setAbscissa('Labels'); $dataSet->setAbscissaName(get_lang('EvaluationName')); $dataSet->normalize(100, '%'); $dataSet->loadPalette(api_get_path(SYS_CODE_PATH) . 'palettes/pchart/default.color', true); // Cache definition $cachePath = api_get_path(SYS_ARCHIVE_PATH); $myCache = new pCache(array('CacheFolder' => substr($cachePath, 0, strlen($cachePath) - 1))); $chartHash = $myCache->getHash($dataSet); if ($myCache->isInCache($chartHash)) { $imgPath = api_get_path(SYS_ARCHIVE_PATH) . $chartHash; $myCache->saveFromCache($chartHash, $imgPath); $imgPath = api_get_path(WEB_ARCHIVE_PATH) . $chartHash; } else { /* Create the pChart object */ $widthSize = $this->bg_width; $heightSize = $this->bg_height; $fontSize = 8; $angle = 50; $myPicture = new pImage($widthSize, $heightSize, $dataSet); /* Turn of Antialiasing */ $myPicture->Antialias = false; /* Add a border to the picture */ $myPicture->drawRectangle(0, 0, $widthSize - 1, $heightSize - 1, array('R' => 0, 'G' => 0, 'B' => 0)); /* Set the default font */ $myPicture->setFontProperties(array('FontName' => api_get_path(SYS_FONTS_PATH) . 'opensans/OpenSans-Regular.ttf', 'FontSize' => 10)); /* Do NOT Write the chart title */ /* Define the chart area */ $myPicture->setGraphArea(50, 30, $widthSize - 20, $heightSize - 100); /* Draw the scale */ $scaleSettings = array('GridR' => 200, 'GridG' => 200, 'GridB' => 200, 'DrawSubTicks' => true, 'CycleBackground' => true, 'Mode' => SCALE_MODE_MANUAL, 'ManualScale' => array('0' => array('Min' => 0, 'Max' => 100)), 'LabelRotation' => $angle); $myPicture->drawScale($scaleSettings); /* Turn on shadow computing */ $myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10)); /* Draw the chart */ $myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10)); $settings = array('DisplayValues' => true, 'DisplaySize' => $fontSize, 'DisplayR' => 0, 'DisplayG' => 0, 'DisplayB' => 0, 'DisplayOrientation' => ORIENTATION_HORIZONTAL, 'Gradient' => false, 'Surrounding' => 30, 'InnerSurrounding' => 25); $myPicture->drawStackedBarChart($settings); $legendSettings = array('Mode' => LEGEND_HORIZONTAL, 'Style' => LEGEND_NOBORDER); $myPicture->drawLegend($widthSize / 2, 15, $legendSettings); /* Write and save into cache */ $myCache->writeToCache($chartHash, $myPicture); $imgPath = api_get_path(SYS_ARCHIVE_PATH) . $chartHash; $myCache->saveFromCache($chartHash, $imgPath); $imgPath = api_get_path(WEB_ARCHIVE_PATH) . $chartHash; } if (!empty($imgPath)) { $courses_graph[$course_code] = '<img src="' . $imgPath . '">'; } } } } if (!empty($courses_graph)) { $graphs[$session_id] = $courses_graph; } } } return $graphs; }