HDF5实例code [英] HDF5 Example code
问题描述
使用 HDF5DotNet ,任何人都可以点我在例如code,这将打开一个HDF5文件,解压缩数据集的内容,并打印内容到标准输出?
到目前为止,我有以下几点:
H5.Open();
VAR H5 = H5F.open(example.h5,H5F.OpenMode.ACC_RDONLY);
var数据= H5D.open(H5/时序/ aaPCBTimes);
VAR空间= H5D.getSpace(数据);
变种大小= H5S.getSimpleExtentDims(空间);
然后,它变得有点混乱。
其实我想做的数据集的内容,一些处理,但我认为一旦我有转储到标准输出,我可以从那里工作了。
更新:我已经解决这个足以砍死解决我自己的问题。我没有认识到一个数据集是一个多阵列 - 我认为这更像是一个数据库表。万一有人有兴趣,
双击[,] dataArray中=新的双[尺寸[0],6]。
VAR wrapArray =新H5Array<双>(dataArray中);
VAR的dataType = H5D.getType(D);
H5D.read(数据集中,数据类型wrapArray);
Console.WriteLine(dataArray中[0,0]);
试试这个:
使用系统;
使用HDF5DotNet;命名空间CSharpExample1
{
类节目
{
//功能的使用
静态INT myFunction的(H5GroupId ID,字符串对象名,对象参数)
{
Console.WriteLine(对象名称{0},对象名);
Console.WriteLine(对象参数是{0},参数);
返回0;
} 静态无效的主要(字串[] args)
{
尝试
{
//我们将写入和读取这个长度的int数组。
const int的DATA_ARRAY_LENGTH = 12; //秩是数据阵列的维数。
const int的RANK = 1; //创建一个HDF5文件。
//枚举类型H5F.CreateMode只提供了法律
//创建模式。提供缺少H5Fcreate参数
使用默认值//。
H5FileId FILEID = H5F.create(myCSharp.h5
H5F.CreateMode.ACC_TRUNC); //创建一个HDF5组。
H5GroupId的groupId = H5G.create(FILEID,/ cSharpGroup,0);
H5GroupId亚= H5G.create(的groupIdmySubGroup,0); //展示getObjectInfo
ObjectInfo信息= H5G.getObjectInfo(FILEID,/ cSharpGroup,真正的);
Console.WriteLine(cSharpGroup头的大小为{0},info.headerSize);
Console.WriteLine(cSharpGroup nlinks是{0},info.nHardLinks);
Console.WriteLine(cSharpGroup的fileno是{0} {1},
info.fileNumber [0],info.fileNumber [1]);
Console.WriteLine(cSharpGroup objno是{0} {1},
info.objectNumber [0],info.objectNumber [1]);
Console.WriteLine(cSharpGroup类型是{0},info.objectType);
H5G.close(亚组); // prepare创建数据空间写一维
//符号整数数组中。
ULONG [] =变暗ULONG新[RANK]
变暗[0] = DATA_ARRAY_LENGTH; //把下坡的数据在阵列中,使我们能
//它写入文件。
INT [] = dset_data新INT [DATA_ARRAY_LENGTH]
的for(int i = 0; I< DATA_ARRAY_LENGTH;我++)
dset_data [i] = DATA_ARRAY_LENGTH - 我; //创建一个数据空间,以适应我们1维阵列。
//所得H5DataSpaceId将用于创建所述
// 数据集。
H5DataSpaceId spaceId = H5S.create_simple(RANK,变暗); //创建一个标准数据类型的副本。我们将使用
//导致H5DataTypeId创建数据集。我们可以
//已经直接在调用中使用的HST.H5Type数据
// H5D.create,但这说明了如何使用H5T.copy的
//并利用H5D.create一个H5DataTypeId的。
H5DataTypeId TYPEID = H5T.copy(H5T.H5Type.NATIVE_INT); //查找类型的大小
UINT typeSize = H5T.getSize(typeid的);
Console.WriteLine(typeSize是{0},typeSize); //设置为大端
H5T.setOrder(typeid的,H5T.Order.BE); //设置以小尾数
H5T.setOrder(typeid的,H5T.Order.LE); //创建数据集。
H5DataSetId资料集= H5D.create(FILEID,/ csharpExample
typeid的,spaceId); //整数数据写入到数据集。 H5D.write(资料集,新H5DataTypeId(H5T.H5Type.NATIVE_INT)
新H5Array< INT>(dset_data)); //如果我们正在写一个值就可能是这样。
// INT singleValue = 100;
// H5D.writeScalar(资料集,新H5DataTypeId(H5T.H5Type.NATIVE_INT)
// REF singleValue); //创建一个整型数组来接收读取数据。
INT [] = readDataBack新INT [DATA_ARRAY_LENGTH] //从数据集中读取整数数据备份
H5D.read(资料集,新H5DataTypeId(H5T.H5Type.NATIVE_INT)
新H5Array< INT>(readDataBack)); //回显数据
的for(int i = 0; I< DATA_ARRAY_LENGTH;我++)
{
Console.WriteLine(readDataBack [I]);
} //关闭所有打开的资源。
H5D.close(资料集); //重新打开并关闭数据集,以表明我们可以。
资料集= H5D.open(FILEID,/ csharpExample);
H5D.close(资料集);
资料集= H5D.open(的groupId,/ csharpExample);
H5D.close(资料集); H5S.close(spaceId);
H5T.close(typeid的);
H5G.close(的groupId); // INT X = 10;
//H5T.enumInsert<int>(typeId的myString,楼盘X);
//H5G.close(groupId);
H5GIterateDelegate myDelegate;
myDelegate = myFunction的;
INT X = 9;
INT指数= H5G.iterate(FILEID,/ cSharpGroup
myDelegate中,x,0); //重新打开组ID,表明我们可以。
的groupId = H5G.open(FILEID,/ cSharpGroup);
H5G.close(的groupId); H5F.close(FILEID); //重新打开和重新关闭文件。
H5FileId的OpenID = H5F.open(myCSharp.h5
H5F.OpenMode.ACC_RDONLY);
H5F.close(OpenID的);
}
//这捕获所有的HDF异常类。因为每次调用
//生成唯一的例外,不同的异常可以处理
分别//。例如,要赶上我们可以使用打开错误
//赶上(H5FopenException openException)。
赶上(HDFException E)
{
Console.WriteLine(e.Message);
} Console.WriteLine(处理完毕!);
到Console.ReadLine();
}
}
}
Using HDF5DotNet, can anyone point me at example code, which will open an hdf5 file, extract the contents of a dataset, and print the contents to standard output?
So far I have the following:
H5.Open();
var h5 = H5F.open("example.h5", H5F.OpenMode.ACC_RDONLY);
var dataset = H5D.open(h5, "/Timings/aaPCBTimes");
var space = H5D.getSpace(dataset);
var size = H5S.getSimpleExtentDims(space);
Then it gets a bit confusing.
I actually want to do some processing on the contents of the dataset but I think once I have dump to standard output I can work it out from there.
UPDATE: I've hacked around this sufficient to solve my own problem. I failed to realise a dataset was a multi-array - I thought it was more like a db table. In the unlikely event anyone is interested,
double[,] dataArray = new double[size[0], 6];
var wrapArray = new H5Array<double>(dataArray);
var dataType = H5D.getType(d);
H5D.read(dataset, dataType, wrapArray);
Console.WriteLine(dataArray[0, 0]);
Try this:
using System;
using HDF5DotNet;
namespace CSharpExample1
{
class Program
{
// Function used with
static int myFunction(H5GroupId id, string objectName, Object param)
{
Console.WriteLine("The object name is {0}", objectName);
Console.WriteLine("The object parameter is {0}", param);
return 0;
}
static void Main(string[] args)
{
try
{
// We will write and read an int array of this length.
const int DATA_ARRAY_LENGTH = 12;
// Rank is the number of dimensions of the data array.
const int RANK = 1;
// Create an HDF5 file.
// The enumeration type H5F.CreateMode provides only the legal
// creation modes. Missing H5Fcreate parameters are provided
// with default values.
H5FileId fileId = H5F.create("myCSharp.h5",
H5F.CreateMode.ACC_TRUNC);
// Create a HDF5 group.
H5GroupId groupId = H5G.create(fileId, "/cSharpGroup", 0);
H5GroupId subGroup = H5G.create(groupId, "mySubGroup", 0);
// Demonstrate getObjectInfo
ObjectInfo info = H5G.getObjectInfo(fileId, "/cSharpGroup", true);
Console.WriteLine("cSharpGroup header size is {0}", info.headerSize);
Console.WriteLine("cSharpGroup nlinks is {0}", info.nHardLinks);
Console.WriteLine("cSharpGroup fileno is {0} {1}",
info.fileNumber[0], info.fileNumber[1]);
Console.WriteLine("cSharpGroup objno is {0} {1}",
info.objectNumber[0], info.objectNumber[1]);
Console.WriteLine("cSharpGroup type is {0}", info.objectType);
H5G.close(subGroup);
// Prepare to create a data space for writing a 1-dimensional
// signed integer array.
ulong[] dims = new ulong[RANK];
dims[0] = DATA_ARRAY_LENGTH;
// Put descending ramp data in an array so that we can
// write it to the file.
int[] dset_data = new int[DATA_ARRAY_LENGTH];
for (int i = 0; i < DATA_ARRAY_LENGTH; i++)
dset_data[i] = DATA_ARRAY_LENGTH - i;
// Create a data space to accommodate our 1-dimensional array.
// The resulting H5DataSpaceId will be used to create the
// data set.
H5DataSpaceId spaceId = H5S.create_simple(RANK, dims);
// Create a copy of a standard data type. We will use the
// resulting H5DataTypeId to create the data set. We could
// have used the HST.H5Type data directly in the call to
// H5D.create, but this demonstrates the use of H5T.copy
// and the use of a H5DataTypeId in H5D.create.
H5DataTypeId typeId = H5T.copy(H5T.H5Type.NATIVE_INT);
// Find the size of the type
uint typeSize = H5T.getSize(typeId);
Console.WriteLine("typeSize is {0}", typeSize);
// Set the order to big endian
H5T.setOrder(typeId, H5T.Order.BE);
// Set the order to little endian
H5T.setOrder(typeId, H5T.Order.LE);
// Create the data set.
H5DataSetId dataSetId = H5D.create(fileId, "/csharpExample",
typeId, spaceId);
// Write the integer data to the data set.
H5D.write(dataSetId, new H5DataTypeId(H5T.H5Type.NATIVE_INT),
new H5Array<int>(dset_data));
// If we were writing a single value it might look like this.
// int singleValue = 100;
// H5D.writeScalar(dataSetId, new H5DataTypeId(H5T.H5Type.NATIVE_INT),
// ref singleValue);
// Create an integer array to receive the read data.
int[] readDataBack = new int[DATA_ARRAY_LENGTH];
// Read the integer data back from the data set
H5D.read(dataSetId, new H5DataTypeId(H5T.H5Type.NATIVE_INT),
new H5Array<int>(readDataBack));
// Echo the data
for(int i=0;i<DATA_ARRAY_LENGTH;i++)
{
Console.WriteLine(readDataBack[i]);
}
// Close all the open resources.
H5D.close(dataSetId);
// Reopen and close the data sets to show that we can.
dataSetId = H5D.open(fileId, "/csharpExample");
H5D.close(dataSetId);
dataSetId = H5D.open(groupId, "/csharpExample");
H5D.close(dataSetId);
H5S.close(spaceId);
H5T.close(typeId);
H5G.close(groupId);
//int x = 10;
//H5T.enumInsert<int>(typeId, "myString", ref x);
//H5G.close(groupId);
H5GIterateDelegate myDelegate;
myDelegate = myFunction;
int x = 9;
int index = H5G.iterate(fileId, "/cSharpGroup",
myDelegate, x, 0);
// Reopen the group id to show that we can.
groupId = H5G.open(fileId, "/cSharpGroup");
H5G.close(groupId);
H5F.close(fileId);
// Reopen and reclose the file.
H5FileId openId = H5F.open("myCSharp.h5",
H5F.OpenMode.ACC_RDONLY);
H5F.close(openId);
}
// This catches all the HDF exception classes. Because each call
// generates unique exception, different exception can be handled
// separately. For example, to catch open errors we could have used
// catch (H5FopenException openException).
catch (HDFException e)
{
Console.WriteLine(e.Message);
}
Console.WriteLine("Processing complete!");
Console.ReadLine();
}
}
}
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