ODStatistics.js
6.47 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
/*
** This file is part of JSDataChecker.
**
** JSDataChecker is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** JSDataChecker is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with JSDataChecker. If not, see <http://www.gnu.org/licenses/>.
**
** Copyright (C) 2016 JSDataChecker - Donato Pirozzi (donatopirozzi@gmail.com)
** Distributed under the GNU GPL v3. For full terms see the file LICENSE.
** License: http://www.gnu.org/licenses/gpl.html GPL version 3 or higher
**/
function ODStatistics() {
}//EndFunction.
ODStatistics.prototype = (function() {
var httpGetAsync = function(theUrl, callback) {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200)
callback(xhttp.responseText);
};
xhttp.onerror = function (XMLHttpRequest, textStatus, errorThrown) {
console.log( 'The data failed to load :(' );
console.log(JSON.stringify(XMLHttpRequest));
};
xhttp.open("GET", theUrl, true);//true for asynchronous.
xhttp.send(null);
};//EndFunction.
var _downloadDataset = function() {
};//EndFunction.
/**
* Retrieves the formats of all datasets.
* @param datasets
* @returns {{}}
* @private
*/
var _analyseFormats = function(datasets) {
var stats = {};
stats.numOfDatasets = datasets.length;
stats.formats = [];
stats.formatsAggregated = [];
for (var i=0; i<datasets.length; i++) {
var dataset = datasets[i];
//Statistics on the datasets' formats.
ArrayUtils.TestAndIncrement(stats.formats, dataset.format);
var dsformat = dataset.format.toLowerCase();
//Aggregated formats.
if (dsformat.includes("csv"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "csv");
else if (dsformat.includes("pdf"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "pdf");
else if (dsformat.includes("html"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "html");
else if (dsformat.includes("json"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "json");
else if (dsformat.includes("xml"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "xml");
else if (dsformat.includes("shp"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "shp");
else if (dsformat.includes("geojson"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "geojson");
else if (dsformat.includes("kml"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "kml");
else if (dsformat.includes("txt"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "txt");
else if (dsformat.includes("xls") || dsformat.includes("xlsx") || dsformat.includes("ods"))
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "xls/ods");
else
ArrayUtils.TestAndIncrement(stats.formatsAggregated, "other");
}//EndForI.
//Calculates the formats percentages.
var tmpArrFormats = stats.formats;
stats.formats = [];
ArrayUtils.IteratorOverKeys(tmpArrFormats, function(item, property) {
var recordFormat = {};
recordFormat.name = property;
recordFormat.occurrance = item;
recordFormat.occurrancePercentage = (item / datasets.length) * 100;
recordFormat.occurrancePercentage = Math.round(recordFormat.occurrancePercentage * 100) / 100;
stats.formats.push(recordFormat);
});
//Calculates the formats percentage for the aggregated formats.
var tmpArrFormatsAggregated = stats.formatsAggregated;
stats.formatsAggregated = [];
ArrayUtils.IteratorOverKeys(tmpArrFormatsAggregated, function(item, property) {
var recordFormat = {};
recordFormat.name = property;
recordFormat.occurrance = item;
recordFormat.occurrancePercentage = (item / datasets.length) * 100;
recordFormat.occurrancePercentage = Math.round(recordFormat.occurrancePercentage * 100) / 100;
stats.formatsAggregated.push(recordFormat);
});
return stats;
};//EndFunction.
/**
* Given a dataset in input it calculates statistics.
* @param dataset
* @private
*/
var _analyseDataset = function(dataset, stats) {
if (typeof stats === 'undefined')
stats = {};
if (!stats.hasOwnProperty('totRows')) {
stats.totRows = 0;
stats.totCols = 0;
stats.maxRowsPerDataset = null;
stats.minRowsPerDataset = null;
stats.maxColsPerDataset = null;
stats.minColsPerDataset = null;
stats.totDatasetsAnalysed = 0;
}
stats.totRows += dataset.numOfRows;
stats.totCols += dataset.numOfCols;
if (stats.maxRowsPerDataset === null || dataset.numOfRows > stats.maxRowsPerDataset)
stats.maxRowsPerDataset = dataset.numOfRows;
if (stats.minRowsPerDataset === null || dataset.numOfRows < stats.minRowsPerDataset)
stats.minRowsPerDataset = dataset.numOfRows;
if (stats.maxColsPerDataset === null || dataset.numOfCols > stats.maxColsPerDataset)
stats.maxColsPerDataset = dataset.numOfCols;
if (stats.minColsPerDataset === null || dataset.numOfCols < stats.minColsPerDataset)
stats.minColsPerDataset = dataset.numOfCols;
return stats;
};//EndFunction.
return {
constructor: ODStatistics,
analyse: function (datasets) {
var stats = _analyseFormats(datasets); //Analyses the datasets formats.
return stats;
},//EndFunction.
analyseDataset: function (dataset, stats) {
return _analyseDataset(dataset, stats);
}//EndFunction.
};
})();