HDF5：在整數

Question

注意的表更新單元格：交會上http://mail.lists.hdfgroup.org/pipermail/hdf-forum_lists.hdfgroup.org/2014-July/007960.html

發佈使用HDF5，我建了一個5x4表。表中的每個單元格都包含3 integers 我正在嘗試編寫一個函數setyx將更新表格的單元格y,x 這是我迄今編寫的C代碼。

#include "hdf5.h" 

/** set 3 'int' values at y/x */ 
static void setyx(hid_t dataset, hid_t dataspace, 
        int y,int x, 
        int i1,int i2,int i3) 
    { 
    int values[3]={i1,i2,i3}; 
    hsize_t starts[3]={y,x,0}; 
    hsize_t counts[3]={1,1,1}; 
    hsize_t dims_memory[3]={1,1,3}; 

    H5Sselect_hyperslab(dataspace, H5S_SELECT_SET, starts, NULL, counts, NULL); 
    hid_t filespace = H5Dget_space(dataset); 
    hid_t memspace = H5Screate_simple(3, dims_memory, NULL); 

    H5Dwrite(dataset, 
     H5T_NATIVE_INT, 
     memspace, 
     filespace, 
     H5P_DEFAULT, 
     values); 

    H5Sclose(memspace); 
    H5Sclose(filespace); 
    } 


int main (void) 
    { 
    hid_t  file, dataset; 
    hid_t  dataspace; 
    hsize_t  dims[3]={5,4,3}; 


    file = H5Fcreate("test.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); 
    dataspace = H5Screate_simple(3, dims, NULL); 
    dataset = H5Dcreate(file, "/test", H5T_NATIVE_INT, dataspace, 
         H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT); 
    setyx(dataset,dataspace,2,1, 100,200,300); 

    H5Sclose(dataspace); 
    H5Dclose(dataset); 
    H5Fclose(file); 
    return 0; 
    } 

，但它提出了一些錯誤：

#000: H5Dio.c line 225 in H5Dwrite(): can't prepare for writing data 
    major: Dataset 
    minor: Write failed 
    #001: H5Dio.c line 347 in H5D__pre_write(): can't write data 
    major: Dataset 
    minor: Write failed 
    #002: H5Dio.c line 685 in H5D__write(): src and dest data spaces have different sizes 
    major: Invalid arguments to routine 
    minor: Bad value 

什麼是(y,x)更新定單元的正確方法是什麼？

Answer 1

的問題得到回答的HDF5郵件列表：http://mail.lists.hdfgroup.org/pipermail/hdf-forum_lists.hdfgroup.org/2014-July/007966.html

下面是代碼：

#include <stdio.h> 
#include <stdlib.h> 
#include "hdf5.h" 

#define VERIFY(a) do { if((a)<0) { fprintf(stderr,"Failure line %d.\n",__LINE__); exit(-1);}}while(0) 

/** set 3 'int' values at y/x */ 
static void setyx(hid_t dataset, hid_t dataspace,int y,int x,int i1,int i2,int i3) 
    { 
    int values[3]={i1,i2,i3}; 
    hsize_t starts[3]={y,x,0}; 
    hsize_t counts[3]={1,1,3}; 

    hsize_t dims_memory[3]={1,1,3}; 



    hid_t filespace = H5Dget_space(dataset); 
    hid_t memspace = H5Screate_simple(3, dims_memory, NULL); 
    VERIFY(memspace); 

    VERIFY(H5Sselect_hyperslab(dataspace, 
      H5S_SELECT_SET, 
      starts, NULL, 
      counts, NULL)); 

    VERIFY(H5Dwrite(dataset, 
     H5T_NATIVE_INT, 
     memspace, 
     dataspace, 
     H5P_DEFAULT, 
     values)); 

    H5Sclose(memspace); 
    H5Sclose(filespace); 
    } 


int main (void) 
    { 
    hid_t  file, dataset; 
    hid_t  dataspace; 
    hsize_t  dims[3]={5,4,3}; 


    file = H5Fcreate("test.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); 
    dataspace = H5Screate_simple(3, dims, NULL); 
    dataset = H5Dcreate(file, "/test", H5T_NATIVE_INT, dataspace, 
         H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT); 
    setyx(dataset,dataspace,2,1, 100,200,300); 

    H5Sclose(dataspace); 
    H5Dclose(dataset); 
    H5Fclose(file); 
    return 0; 
    }