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));
}
});
}
}
}
public PcaAsyncTask(Context context, List<String> files, int numComponents) {
super(context);
mFiles = files;
mFileManager = FileManager.getSingleton(context);
mNumComponents = numComponents;
mShowComponentsMsg = false;
}
private void fillFilesListView() {
File defaultPath = fileManager.getDefaultFolder();
String[] filesInPath = defaultPath.list();
ListAdapter filesAdapter =
new ArrayAdapter<>(
getContext(),
android.R.layout.simple_list_item_multiple_choice,
android.R.id.text1,
filesInPath);
listFiles.setAdapter(filesAdapter);
listFiles.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fileManager = FileManager.getSingleton(getContext());
DeviceConnectionListener listener = null;
Bundle args = getArguments();
if (args != null) {
fromDevice = args.getBoolean(ARG_FROM_DEVICE);
if (fromDevice) {
listener = this;
}
}
usbConn = UsbConnection.getSingleton(getContext(), listener);
mainHandler = new Handler(getContext().getMainLooper());
}
@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;
}
private void createView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_pca_tab, container, false);
layoutProgress = view.findViewById(R.id.layoutProgress);
layoutProgress.setVisibility(View.GONE);
layoutPCAGraphOptions = view.findViewById(R.id.layoutPCAGraphOptions);
layoutPCAGraphOptions.setVisibility(View.GONE);
listFiles = (ListView) view.findViewById(R.id.listArquivos);
txtComponentes = (TextView) view.findViewById(R.id.txtComponentes);
txtComponentes.setText("20");
seekComponentes = (SeekBar) view.findViewById(R.id.seekComponentes);
seekComponentes.setOnSeekBarChangeListener(
new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (progress == 0) {
seekBar.setProgress(1);
progress = 1;
}
txtComponentes.setText(String.valueOf(progress));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO
numComponentes = seekBar.getProgress();
}
});
seekComponentes.setProgress(20);
numComponentes = 20;
btnPCA = (Button) view.findViewById(R.id.btnPCA);
btnPCA.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO:
btnPCA.setEnabled(false);
ArrayList<String> files = new ArrayList<>();
SparseBooleanArray checkedPositions = listFiles.getCheckedItemPositions();
for (int i = 0; i < listFiles.getCount(); i++) {
if (checkedPositions.get(i)) {
String strFile = (String) listFiles.getItemAtPosition(i);
if (!TextUtils.isEmpty(strFile)) {
files.add(strFile);
} else {
// TODO:
}
}
}
if (files.isEmpty()) {
// TODO: show alert, need to select at least one file
return;
}
Bundle args = new Bundle();
args.putStringArrayList(ARG_FILENAMES, files);
getLoaderManager().restartLoader(LOADER_PCA, args, PcaTabFragment.this).forceLoad();
}
});
radioGroupMatrizes = (RadioGroup) view.findViewById(R.id.radioGroupMatrizes);
radioMatrizesL = (RadioButton) view.findViewById(R.id.radioMatrizesL);
radioMatrizesL.setChecked(true);
spinX = (Spinner) view.findViewById(R.id.spinX);
spinY = (Spinner) view.findViewById(R.id.spinY);
btnPlotPCA = (Button) view.findViewById(R.id.btnPlotPCA);
btnPlotPCA.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
ChartCollection collection = null;
switch (radioGroupMatrizes.getCheckedRadioButtonId()) {
case R.id.radioMatrizesL:
collection = chartCollections.get("L");
break;
case R.id.radioMatrizesT:
collection = chartCollections.get("T");
break;
}
if (collection != null) {
int x = spinX.getSelectedItemPosition();
int y = spinY.getSelectedItemPosition();
ChartCollection finalCollection =
new ChartCollection(String.format("PCA - (%d, %d)", x, y));
Map<Double, Double> data = new HashMap<>();
for (ChartData chartData : collection) {
// TODO:
Number numX = chartData.getData().get((double) x);
data.put(numX.doubleValue(), chartData.getData().get((double) y));
}
ChartData chartData = new ChartData("PCA", "PCA", new Date().getTime(), data);
finalCollection.addChartData(chartData);
listener.onPlotChart(finalCollection);
}
}
});
fileManager = FileManager.getSingleton(getContext());
if (fileManager.askForStoragePermission(
getActivity(), REQUEST_FILE_PERMISSION, Manifest.permission.READ_EXTERNAL_STORAGE)) {
fillFilesListView();
}
mShortAnimationDuration = getResources().getInteger(android.R.integer.config_shortAnimTime);
}