public void WriteAndReadDataset()
{
string filename = Path.Combine(folder, "testDataset.H5");
var dset = dsets.First();
try
{
var fileId = Hdf5.CreateFile(filename);
Assert.IsTrue(fileId > 0);
Hdf5.WriteDataset(fileId, "/test", dset);
Hdf5.CloseFile(fileId);
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
try
{
var fileId = Hdf5.OpenFile(filename);
Assert.IsTrue(fileId > 0);
double[,] dset2 = (double[, ])Hdf5.ReadDataset <double>(fileId, "/test").result;
CompareDatasets(dset, dset2);
bool same = dset == dset2;
Hdf5.CloseFile(fileId);
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
}
public void WriteAndReadDatetimeDataset()
{
string filename = Path.Combine(folder, "testDatetime.H5");
var times = new DateTime[10, 5];
var offset = new DateTime(2000, 1, 1, 12, 0, 0);
for (var i = 0; i < 10; i++)
{
for (var j = 0; j < 5; j++)
{
times[i, j] = offset.AddDays(i + j * 5);
}
}
try
{
var fileId = Hdf5.CreateFile(filename);
Assert.IsTrue(fileId > 0);
Hdf5.WriteDataset(fileId, "/test", times);
var timesRead = (DateTime[, ])Hdf5.ReadDataset <DateTime>(fileId, "/test").result;
CompareDatasets(times, timesRead);
Hdf5.CloseFile(fileId);
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
}
public void WriteAndReadTimespanDataset()
{
string filename = Path.Combine(folder, "testTimespan.H5");
var times = new TimeSpan[10, 5];
var offset = new TimeSpan(1, 0, 0, 0, 0);
for (var i = 0; i < 10; i++)
{
for (var j = 0; j < 5; j++)
{
times[i, j] = offset.Add(new TimeSpan(i + j * 5, 0, 0));
}
}
try
{
var fileId = Hdf5.CreateFile(filename);
Assert.IsTrue(fileId > 0);
Hdf5.WriteDataset(fileId, "/test", times);
TimeSpan[,] timesRead = (TimeSpan[, ])Hdf5.ReadDataset <TimeSpan>(fileId, "/test").result;
CompareDatasets(times, timesRead);
Hdf5.CloseFile(fileId);
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
}
static void ReadFile(string filePath)
{
var file = Hdf5.OpenFile(filePath, true);
var group = Hdf5.CreateOrOpenGroup(file, "group");
var(ok, rawData) = Hdf5.ReadDataset <int>(group, "dataset");
if (ok)
{
var data = (int[, ])rawData;
for (int i = 0; i < data.GetLength(0); ++i)
{
for (int j = 0; j < data.GetLength(1); ++j)
{
Write($"{data[i, j],3}");
}
WriteLine();
}
}
//var dataSet = H5D.open(group, "dataset");
//var hello = Hdf5.ReadUnicodeString(dataSet, "string");
//H5D.close(dataSet);
//WriteLine($"string: {hello}");
Hdf5.CloseGroup(group);
Hdf5.CloseFile(file);
}
static void Main(string[] args)
{
string fileName = @"D:\Shubham\HDF5\HDFinOneLine_1434.H5";
var fileID = Hdf5.OpenFile(fileName);
var groupId = H5G.open(fileID, "A/B");
Array dset2 = Hdf5.ReadDataset <Int32>(groupId, "Sequence 2", 100000, 200000);
Console.WriteLine("Program Finished...");
Console.ReadKey();
}
public void WriteAndReadGroupsWithDataset()
{
string filename = Path.Combine(folder, "testGroups.H5");
try
{
var fileId = Hdf5.CreateFile(filename);
Assert.IsTrue(fileId > 0);
var dset = dsets.First();
var groupId = H5G.create(fileId, Hdf5Utils.NormalizedName("/A")); ///B/C/D/E/F/G/H
Hdf5.WriteDataset(groupId, Hdf5Utils.NormalizedName("test"), dset);
var subGroupId = Hdf5.CreateOrOpenGroup(groupId, Hdf5Utils.NormalizedName("C"));
var subGroupId2 = Hdf5.CreateOrOpenGroup(groupId, Hdf5Utils.NormalizedName("/D")); // will be saved at the root location
dset = dsets.Skip(1).First();
Hdf5.WriteDataset(subGroupId, Hdf5Utils.NormalizedName("test2"), dset);
Hdf5.CloseGroup(subGroupId);
Hdf5.CloseGroup(subGroupId2);
Hdf5.CloseGroup(groupId);
groupId = H5G.create(fileId, Hdf5Utils.NormalizedName("/A/B")); ///B/C/D/E/F/G/H
dset = dsets.Skip(1).First();
Hdf5.WriteDataset(groupId, Hdf5Utils.NormalizedName("test"), dset);
Hdf5.CloseGroup(groupId);
groupId = Hdf5.CreateGroupRecursively(fileId, Hdf5Utils.NormalizedName("A/B/C/D/E/F/I"));
Hdf5.CloseGroup(groupId);
Hdf5.CloseFile(fileId);
fileId = Hdf5.OpenFile(filename);
Assert.IsTrue(fileId > 0);
fileId = Hdf5.OpenFile(filename);
groupId = H5G.open(fileId, Hdf5Utils.NormalizedName("/A/B"));
double[,] dset2 = (double[, ])Hdf5.ReadDataset <double>(groupId, Hdf5Utils.NormalizedName("test")).result;
CompareDatasets(dset, dset2);
Assert.IsTrue(Hdf5.CloseGroup(groupId) >= 0);
groupId = H5G.open(fileId, Hdf5Utils.NormalizedName("/A/C"));
dset2 = (double[, ])Hdf5.ReadDataset <double>(groupId, Hdf5Utils.NormalizedName("test2")).result;
CompareDatasets(dset, dset2);
Assert.IsTrue(Hdf5.CloseGroup(groupId) >= 0);
bool same = dset == dset2;
dset = dsets.First();
dset2 = (double[, ])Hdf5.ReadDataset <double>(fileId, Hdf5Utils.NormalizedName("/A/test")).result;
CompareDatasets(dset, dset2);
Assert.IsTrue(Hdf5Utils.ItemExists(fileId, Hdf5Utils.NormalizedName("A/B/C/D/E/F/I"), DataTypes.Hdf5ElementType.Dataset));
Assert.IsTrue(Hdf5.CloseFile(fileId) == 0);
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
}
public void WriteAndReadSubsetOfDataset()
{
string filename = Path.Combine(folder, "testSubset.H5");
try
{
var fileId = Hdf5.CreateFile(filename);
Assert.IsTrue(fileId > 0);
var chunkSize = new ulong[] { 5, 5 };
using (var chunkedDset = new ChunkedDataset <double>("/test", fileId, dsets.First()))
{
foreach (var ds in dsets.Skip(1))
{
chunkedDset.AppendDataset(ds);
}
;
}
Hdf5.CloseFile(fileId);
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
try
{
var fileId = Hdf5.OpenFile(filename);
ulong begIndex = 8;
ulong endIndex = 21;
var dset = Hdf5.ReadDataset <double>(fileId, "/test", begIndex, endIndex);
Hdf5.CloseFile(fileId);
Assert.IsTrue(dset.Rank == dsets.First().Rank);
int count = Convert.ToInt32(endIndex - begIndex + 1);
Assert.IsTrue(count == dset.GetLength(0));
// Creat a range from number 8 to 21
var testRange = Enumerable.Range((int)begIndex, count).Select(t => (double)t);
// Get the first column from row index number 8 (the 9th row) to row index number 21 (22th row)
var x0Range = dset.Cast <double>().Where((d, i) => i % 5 == 0);
Assert.IsTrue(testRange.SequenceEqual(x0Range));
}
catch (Exception ex)
{
CreateExceptionAssert(ex);
}
}
private long WriteDataset(string filename)
{
long tef2 = Hdf5.CreateFile(filename);
int[] blah = { 1, 2, 4, 5, 0 };
Hdf5.WriteDatasetFromArray <int>(tef2, "blah", blah);
Hdf5.CloseFile(tef2);
var what = "???"; // breakpoint in VS to test h5 file contents independently before next write step
tef2 = Hdf5.OpenFile(filename);
blah[4] = 6;
Hdf5.WriteDatasetFromArray <int>(tef2, "blah", blah); // This command throws several debug errors from PInvoke
var(success, result) = Hdf5.ReadDataset <int>(tef2, "blah");
Assert.IsTrue(success);
Assert.IsTrue(result.Cast <int>().SequenceEqual(blah));
// loading the hdf5 file shows it only has {1, 2, 4, 5, 0} stored.
return(tef2);
}
public void OverrideDataset()
{
string filename1 = "overridedataset1.h5";
long id = WriteDataset(filename1);
FileInfo fi = new FileInfo(filename1);
var l1 = fi.Length;
Hdf5.CloseFile(id);
File.Delete(filename1);
string filename = "overridedataset.h5";
Hdf5.Settings.EnableErrorReporting(true);
Hdf5.Settings.OverrideExistingData = true;
long tef2 = Hdf5.CreateFile(filename);
int[] blah = { 1, 2, 4, 5, 0 };
Hdf5.WriteDatasetFromArray <int>(tef2, "blah", blah);
Hdf5.CloseFile(tef2);
var what = "???"; // breakpoint in VS to test h5 file contents independently before next write step
tef2 = Hdf5.OpenFile(filename);
for (int i = 0; i < 10; i++)
{
blah[4] = i + i;
Hdf5.WriteDatasetFromArray <int>(tef2, "blah", blah);
}
var(success, result) = Hdf5.ReadDataset <int>(tef2, "blah");
Assert.IsTrue(success);
Assert.IsTrue(result.Cast <int>().SequenceEqual(blah));
FileInfo fi2 = new FileInfo(filename);
var l2 = fi.Length;
Hdf5.CloseFile(tef2);
File.Delete(filename);
Assert.IsTrue(l1 == l2);
}
public void OverrideAndIncreaseDataset()
{
string filename = "overrideandincreasedataset.h5";
Hdf5.Settings.EnableErrorReporting(true);
Hdf5.Settings.OverrideExistingData = true;
long id = Hdf5.CreateFile(filename);
int[] d1 = { 1, 2, 3, 4, 5 };
int[] d2 = { 11, 12, 13, 14, 15 };
Hdf5.WriteDatasetFromArray <int>(id, "d1", d1);
Hdf5.WriteDatasetFromArray <int>(id, "d2", d2);
Hdf5.CloseFile(id);
id = Hdf5.OpenFile(filename);
var(success, result) = Hdf5.ReadDataset <int>(id, "d1");
var(success1, result2) = Hdf5.ReadDataset <int>(id, "d2");
Hdf5.CloseFile(id);
int[] d3 = { 21, 22, 24, 25, 26, 27, 28, 29, 210 };
Assert.IsTrue(success);
Assert.IsTrue(result.Cast <int>().SequenceEqual(d1));
Assert.IsTrue(success1);
Assert.IsTrue(result2.Cast <int>().SequenceEqual(d2));
id = Hdf5.OpenFile(filename);
Hdf5.WriteDatasetFromArray <int>(id, "d1", d3);
Hdf5.CloseFile(id);
id = Hdf5.OpenFile(filename);
var(success3, result3) = Hdf5.ReadDataset <int>(id, "d1");
var(success4, result4) = Hdf5.ReadDataset <int>(id, "d2");
Hdf5.CloseFile(id);
Assert.IsTrue(success3);
Assert.IsTrue(result3.Cast <int>().SequenceEqual(d3));
Assert.IsTrue(success4);
Assert.IsTrue(result4.Cast <int>().SequenceEqual(d2));
}
public static List <(IVariableV1, NDArray)> load_weights_from_hdf5_group(long f, List <ILayer> layers)
{
string original_keras_version = "2.5.0";
string original_backend = null;
if (Hdf5.AttributeExists(f, "keras_version"))
{
var(success, attr) = Hdf5.ReadStringAttributes(f, "keras_version", "");
if (success)
{
original_keras_version = attr.First();
}
// keras version should be 2.5.0+
var ver_major = int.Parse(original_keras_version.Split('.')[0]);
var ver_minor = int.Parse(original_keras_version.Split('.')[1]);
if (ver_major < 2 || (ver_major == 2 && ver_minor < 5))
{
throw new ValueError("keras version should be 2.5.0 or later.");
}
}
if (Hdf5.AttributeExists(f, "backend"))
{
var(success, attr) = Hdf5.ReadStringAttributes(f, "backend", "");
if (success)
{
original_backend = attr.First();
}
}
var filtered_layers = new List <ILayer>();
foreach (var layer in layers)
{
var weights = _legacy_weights(layer);
if (weights.Count > 0)
{
filtered_layers.append(layer);
}
}
string[] layer_names = load_attributes_from_hdf5_group(f, "layer_names");
var filtered_layer_names = new List <string>();
foreach (var name in layer_names)
{
if (!filtered_layers.Select(x => x.Name).Contains(name))
{
continue;
}
long g = H5G.open(f, name);
var weight_names = load_attributes_from_hdf5_group(g, "weight_names");
if (weight_names.Count() > 0)
{
filtered_layer_names.Add(name);
}
H5G.close(g);
}
layer_names = filtered_layer_names.ToArray();
if (layer_names.Length != filtered_layers.Count())
{
throw new ValueError("You are trying to load a weight file " +
$"containing {layer_names}" +
$" layers into a model with {filtered_layers.Count} layers.");
}
var weight_value_tuples = new List <(IVariableV1, NDArray)>();
foreach (var(k, name) in enumerate(layer_names))
{
var weight_values = new List <NDArray>();
long g = H5G.open(f, name);
var weight_names = load_attributes_from_hdf5_group(g, "weight_names");
foreach (var i_ in weight_names)
{
(bool success, Array result) = Hdf5.ReadDataset <float>(g, i_);
if (success)
{
weight_values.Add(np.array(result));
}
}
H5G.close(g);
var layer = filtered_layers[k];
var symbolic_weights = _legacy_weights(layer);
preprocess_weights_for_loading(layer, weight_values, original_keras_version, original_backend);
if (weight_values.Count() != symbolic_weights.Count())
{
throw new ValueError($"Layer #{k} (named {layer.Name}" +
"in the current model) was found to " +
$"correspond to layer {name} in the save file." +
$"However the new layer {layer.Name} expects " +
$"{symbolic_weights.Count()} weights, but the saved weights have " +
$"{weight_values.Count()} elements.");
}
weight_value_tuples.AddRange(zip(symbolic_weights, weight_values));
}
keras.backend.batch_set_value(weight_value_tuples);
return(weight_value_tuples);
}