mirror of
https://github.com/HDFGroup/hdf5.git
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d9e5ca72f3
Add H5Dcreate to API versioned routines, replacing internal usage with
H5Dcreate2
Fix thread-safe error stack initialization for API versioned error
stack printing routines.
Tested on:
FreeBSD/32 6.2 (duty) in debug mode
FreeBSD/64 6.2 (liberty) w/C++ & FORTRAN, in debug mode
Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
in debug mode
Linux/64-amd64 2.6 (smirom) w/default API=1.6.x, w/C++ & FORTRAN,
in production mode
Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
in production mode
Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
w/szip filter, in production mode
Mac OS X/32 10.4.10 (amazon) in debug mode
186 lines
7.1 KiB
C
186 lines
7.1 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* This example demonstrates how the data transform features of
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* HDF5 works.
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*
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* (1)
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* The test first writes out data, with no data transform set.
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* Then, the test reads back this data with a data transform applied.
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*
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* (2)
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* Then, the test writes a new set of data, with a data transform set.
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* Then, the test reads this new set of data, without a data set.
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*
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* (3)
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* Lastly, the test reads the previous set of data (that was written out
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* with a data transform) with a data transform set for the read.
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*
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* (4)
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* Get the transform from the property using H5Pget_data_transform.
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*/
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#include "hdf5.h"
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#define ROWS 12
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#define COLS 18
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const float windchillF[ROWS][COLS] =
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{ {36.0, 31.0, 25.0, 19.0, 13.0, 7.0, 1.0, -5.0, -11.0, -16.0, -22.0, -28.0, -34.0, -40.0, -46.0, -52.0, -57.0, -63.0 },
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{34.0, 27.0, 21.0, 15.0, 9.0, 3.0, -4.0, -10.0, -16.0, -22.0, -28.0, -35.0, -41.0, -47.0, -53.0, -59.0, -66.0, -72.0 } ,
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{32.0, 25.0, 19.0, 13.0, 6.0, 0.0, -7.0, -13.0, -19.0, -26.0, -32.0, -39.0, -45.0, -51.0, -58.0, -64.0, -71.0, -77.0 },
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{30.0, 24.0, 17.0, 11.0, 4.0, -2.0, -9.0, -15.0, -22.0, -29.0, -35.0, -42.0, -48.0, -55.0, -61.0, -68.0, -74.0, -81.0 },
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{29.0, 23.0, 16.0, 9.0, 3.0, -4.0, -11.0, -17.0, -24.0, -31.0, -37.0, -44.0, -51.0, -58.0, -64.0, -71.0, -78.0, -84.0 },
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{28.0, 22.0, 15.0, 8.0, 1.0, -5.0, -12.0, -19.0, -26.0, -33.0, -39.0, -46.0, -53.0, -60.0, -67.0, -73.0, -80.0, -87.0 },
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{28.0, 21.0, 14.0, 7.0, 0.0, -7.0, -14.0, -21.0, -27.0, -34.0, -41.0, -48.0, -55.0, -62.0, -69.0, -76.0, -82.0, -89.0 },
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{27.0, 20.0, 13.0, 6.0, -1.0, -8.0, -15.0, -22.0, -29.0, -36.0, -43.0, -50.0, -57.0, -64.0, -71.0, -78.0, -84.0, -91.0 },
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{26.0, 19.0, 12.0, 5.0, -2.0, -9.0, -16.0, -23.0, -30.0, -37.0, -44.0, -51.0, -58.0, -65.0, -72.0, -79.0, -86.0, -93.0 },
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{26.0, 19.0, 12.0, 4.0, -3.0, -10.0, -17.0, -24.0, -31.0, -38.0, -45.0, -52.0, -60.0, -67.0, -74.0, -81.0, -88.0, -95.0},
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{25.0, 18.0, 11.0, 4.0, -3.0, -11.0, -18.0, -25.0, -32.0, -39.0, -46.0, -54.0, -61.0, -68.0, -75.0, -82.0, -89.0, -97.0},
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{25.0, 17.0, 10.0, 3.0, -4.0, -11.0, -19.0, -26.0, -33.0, -40.0, -48.0, -55.0, -62.0, -69.0, -76.0, -84.0, -91.0, -98.0}
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};
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#define PRINT(array) \
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{ \
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for(i=0; i<ROWS; i++) \
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{ \
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for(j=0; j<COLS; j++) \
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printf("%6.2f ", array[i][j]); \
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printf("\n"); \
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} \
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}
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int
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main (void)
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{
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hid_t file, dataset; /* file and dataset handles */
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hid_t dataspace; /* handles */
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hsize_t dimsf[2]; /* dataset dimensions */
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herr_t status;
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hid_t dxpl_id_f_to_c, dxpl_id_c_to_f; /* data transform handles */
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const char* f_to_c = "(5/9.0)*(x-32)";
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const char* c_to_f = "(9/5.0)*x + 32";
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char* transform;
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float windchillC[ROWS][COLS];
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int i,j, transform_size;
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/*
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* Create a new file using H5F_ACC_TRUNC access,
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* default file creation properties, and default file
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* access properties.
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*/
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file = H5Fcreate("dtransform.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
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/*
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* Describe the size of the array and create the data space for fixed
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* size dataset.
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*/
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dimsf[0] = ROWS;
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dimsf[1] = COLS;
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dataspace = H5Screate_simple(2, dimsf, NULL);
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/*
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* Create a new dataset within the file using defined dataspace and
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* datatype and default dataset creation properties.
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*/
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dataset = H5Dcreate2(file, "data_no_trans", H5T_NATIVE_FLOAT, dataspace, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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printf("\nOriginal Data: \n");
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PRINT(windchillF);
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/**************** PART 1 **************/
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/*
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* Write the data to the dataset using default transfer properties (ie, no transform set)
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*/
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status = H5Dwrite(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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H5P_DEFAULT, windchillF);
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/* Create the dataset transfer property list */
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dxpl_id_f_to_c = H5Pcreate(H5P_DATASET_XFER);
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/* Set the data transform */
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H5Pset_data_transform(dxpl_id_f_to_c, f_to_c);
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/* Read out the data with the data transform */
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H5Dread(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, dxpl_id_f_to_c, windchillC);
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/* Print the data from the read*/
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printf("\nData with no write transform, but a read transform: \n");
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PRINT(windchillC);
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/**************** PART 2 **************/
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/*
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* Write the data to the dataset with the f_to_c transform set
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*/
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status = H5Dwrite(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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dxpl_id_f_to_c, windchillF);
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/* Read out the data with the default transfer list (ie, no transform set) */
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H5Dread(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, H5P_DEFAULT, windchillC);
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/* Print the data from the read*/
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printf("\nData with write transform, but no read transform: \n");
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PRINT(windchillC);
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/************** PART 3 ***************/
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/* Create the dataset transfer property list */
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dxpl_id_c_to_f = H5Pcreate(H5P_DATASET_XFER);
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/* Set the data transform to be used on the read*/
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H5Pset_data_transform(dxpl_id_c_to_f, c_to_f);
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/*
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* Write the data to the dataset using the f_to_c transform
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*/
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status = H5Dwrite(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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dxpl_id_f_to_c, windchillF);
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/* Read the data with the c_to_f data transform */
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H5Dread(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, dxpl_id_c_to_f, windchillC);
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/* Print the data from the read*/
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printf("\nData with both read and write data transform: \n");
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PRINT(windchillC);
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/************** PART 4 **************/
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transform_size = H5Pget_data_transform(dxpl_id_f_to_c, NULL, 0);
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transform = (char*) malloc(transform_size+1);
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H5Pget_data_transform(dxpl_id_f_to_c, transform, transform_size+1);
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printf("\nTransform string (from dxpl_id_f_to_c) is: %s\n", transform);
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/*
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* Close/release resources.
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*/
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H5Pclose(dxpl_id_c_to_f);
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H5Pclose(dxpl_id_f_to_c);
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H5Sclose(dataspace);
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H5Dclose(dataset);
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H5Fclose(file);
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return 0;
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}
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