private void loadData(boolean drawLast) {
ChartCollection collection =
fromDevice ? fileManager.getCollection() : fileManager.getPcaCollection();
if (collection != null) {
int size = collection.size();
if (size > 0) {
List<Entry> entries = new ArrayList<>();
List<String> xVals = new ArrayList<>();
ChartData data = collection.getCharData(size - 1);
Map<Double, Double> values = data.getData();
List<Double> keyList = new ArrayList<>();
keyList.addAll(values.keySet());
Collections.sort(keyList);
for (Double x : keyList) {
Number numX = x;
int intX = numX.intValue();
xVals.add(String.valueOf(x));
double value = values.get(x);
Number num = value;
float val = num.floatValue();
Entry entry = new Entry(val, intX);
entries.add(entry);
}
LineDataSet dataSet = new LineDataSet(entries, "Dados");
dataSet.setDrawCircleHole(false);
dataSet.setDrawCircles(false);
LineData chartData = new LineData(xVals, dataSet);
chart.setData(chartData);
totalGraphs = size;
if (drawLast) {
currentGraph = totalGraphs;
} else {
if (currentGraph < 1 || currentGraph > size) {
currentGraph = totalGraphs;
}
}
mainHandler.post(
new Runnable() {
@Override
public void run() {
chart.notifyDataSetChanged();
chart.invalidate();
txtTotal.setText(String.valueOf(totalGraphs));
txtCurrent.setText(String.valueOf(currentGraph));
}
});
}
}
}
@Override
public Map<String, ChartCollection> loadInBackground() {
ChartCollection collection = new ChartCollection("PCA");
File defaultFolder = mFileManager.getDefaultFolder();
Uri uriDefaultFolder = Uri.parse("file://" + defaultFolder.getAbsolutePath());
for (String filename : mFiles) {
Uri uriFile = uriDefaultFolder.buildUpon().appendPath(filename).build();
ChartCollection fileCollection = mFileManager.readFileForPca(uriFile);
if (fileCollection != null) {
for (ChartData chartData : fileCollection) {
collection.addChartData(chartData);
}
}
}
if (mNumComponents > collection.size()) {
mShowComponentsMsg = true;
mNumComponents = collection.size();
}
double[][] array = new double[collection.size()][2048];
for (int i = 0; i < collection.size(); i++) {
for (int j = 0; j < 2048; j++) {
array[i][j] = collection.getCharData(i).getData().get((double) j);
}
}
Matrix matrix = new Matrix(array);
// SingularValueDecomposition svd = matrix.svd();
// SingularValueDecomposition svd = new SingularValueDecomposition(matrix);
Pca pca = new Pca(matrix, mNumComponents);
StringWriter strWriter = new StringWriter();
PrintWriter writer = new PrintWriter(strWriter);
matrix.print(writer, 10, 0);
Log.d("Visio", "Matrix = " + strWriter.toString());
Map<String, ChartCollection> pcaCollections = new HashMap<>(2);
ChartCollection lCollection = new ChartCollection("PCA - L");
Matrix lMatrix = pca.getL();
double[][] lArray = lMatrix.getArray();
for (int i = 0; i < lMatrix.getRowDimension(); i++) {
Map<Double, Double> data = new HashMap<>();
for (int j = 0; j < lMatrix.getColumnDimension(); j++) {
data.put((double) j, lArray[i][j]);
}
ChartData chartData = new ChartData("PCA", "PCA", new Date().getTime(), data);
lCollection.addChartData(chartData);
}
pcaCollections.put("L", lCollection);
ChartCollection tCollection = new ChartCollection("PCA - T");
Matrix tMatrix = pca.getT();
double[][] tArray = tMatrix.getArray();
for (int i = 0; i < tMatrix.getRowDimension(); i++) {
Map<Double, Double> data = new HashMap<>();
for (int j = 0; j < tMatrix.getColumnDimension(); j++) {
data.put((double) j, tArray[i][j]);
}
ChartData chartData = new ChartData("PCA", "PCA", new Date().getTime(), data);
tCollection.addChartData(chartData);
}
pcaCollections.put("T", tCollection);
return pcaCollections;
}