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<b><H1>HDF User�s Guide</H1>
Version 4.2r4</b><br />
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<a name="wp473591"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex1.c
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<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
#include "hdf.h"<a name="wp930692"> </a>
#define WIDTH 5<a name="wp931453"> </a>
#define HEIGHT 6<a name="wp931454"> </a>
#define PIXEL_DEPTH 3<a name="wp931455"> </a>
main( )<a name="wp931457"> </a>
{<a name="wp931458"> </a>
/* Initialize the image array. */<a name="wp931460"> </a>
static uint8 raster_data[HEIGHT][WIDTH][PIXEL_DEPTH] =<a name="wp931461"> </a>
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12, 13,14,15, <a name="wp931462"> </a>
16,17,18, 19,20,21, 22,23,24, 25,26,27, 28,29,30, <a name="wp931463"> </a>
31,32,33, 34,35,36, 37,38,39, 40,41,42, 43,44,45, <a name="wp931464"> </a>
46,47,48, 49,50,51, 52,53,54, 55,56,57, 58,59,60, <a name="wp931465"> </a>
61,62,63, 64,65,66, 67,68,69, 70,71,72, 73,74,75, <a name="wp931466"> </a>
76,77,78, 79,80,81, 82,83,84, 85,86,87, 88,89,90 };<a name="wp931467"> </a>
intn status;<a name="wp931468"> </a>
/* Write the 24-bit raster image to the HDF file. */<a name="wp931470"> </a>
status = DF24addimage("Example1.hdf", (VOIDP)raster_data, WIDTH, \<a name="wp931471"> </a>
HEIGHT);<a name="wp931472"> </a>
}<a name="wp931474"> </a>
</pre></div>
<a name="wp928476"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex1.f
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
PROGRAM WRITE RIS24<a name="wp930723"> </a>
integer status, d2aimg <a name="wp931484"> </a>
integer*4 WIDTH, HEIGHT, PIXEL_DEPTH<a name="wp931485"> </a>
parameter (WIDTH = 5,<a name="wp931486"> </a>
+ HEIGHT = 6, <a name="wp931487"> </a>
+ PIXEL_DEPTH = 3) <a name="wp931488"> </a>
character raster_data(PIXEL_DEPTH, WIDTH, HEIGHT)<a name="wp931490"> </a>
C Initialize the image array.<a name="wp931492"> </a>
data raster_data <a name="wp931493"> </a>
+ / 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12, 13,14,15, <a name="wp931494"> </a>
+ 16,17,18, 19,20,21, 22,23,24, 25,26,27, 28,29,30, <a name="wp931495"> </a>
+ 31,32,33, 34,35,36, 37,38,39, 40,41,42, 43,44,45, <a name="wp931496"> </a>
+ 46,47,48, 49,50,51, 52,53,54, 55,56,57, 58,59,60, <a name="wp931497"> </a>
+ 61,62,63, 64,65,66, 67,68,69, 70,71,72, 73,74,75, <a name="wp931498"> </a>
+ 76,77,78, 79,80,81, 82,83,84, 85,86,87, 88,89,90 /<a name="wp931499"> </a>
C Write the 24-bit raster image to the file.<a name="wp931501"> </a>
status = d2aimg(`Example1.hdf', raster_data, WIDTH, <a name="wp931502"> </a>
+ HEIGHT)<a name="wp931503"> </a>
end<a name="wp931505"> </a>
</pre></div>
<a name="wp928479"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex2.c
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
#include "hdf.h"<a name="wp930775"> </a>
#include "hcomp.h"<a name="wp931514"> </a>
#define WIDTH 5<a name="wp931516"> </a>
#define HEIGHT 6<a name="wp931517"> </a>
#define PIXEL_DEPTH 3<a name="wp931518"> </a>
main( )<a name="wp931520"> </a>
{<a name="wp931521"> </a>
/* Initialize the image array. */<a name="wp931523"> </a>
static uint8 raster_data[HEIGHT][WIDTH][PIXEL_DEPTH] = <a name="wp931524"> </a>
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12, 13,14,15, <a name="wp931525"> </a>
16,17,18, 19,20,21, 22,23,24, 25,26,27, 28,29,30, <a name="wp931526"> </a>
31,32,33, 34,35,36, 37,38,39, 40,41,42, 43,44,45, <a name="wp931527"> </a>
46,47,48, 49,50,51, 52,53,54, 55,56,57, 58,59,60, <a name="wp931528"> </a>
61,62,63, 64,65,66, 67,68,69, 70,71,72, 73,74,75, <a name="wp931529"> </a>
76,77,78, 79,80,81, 82,83,84, 85,86,87, 88,89,90 };<a name="wp931530"> </a>
intn status;<a name="wp931531"> </a>
/* Change interlace from pixel to scan-plane. */<a name="wp931533"> </a>
status = DF24setil(DFIL_PLANE); <a name="wp931534"> </a>
/* Write the 24-bit image data to file. */<a name="wp931536"> </a>
status = DF24addimage("Example2.hdf", (VOIDP)raster_data, <a name="wp931537"> </a>
WIDTH, HEIGHT);<a name="wp931538"> </a>
}<a name="wp931540"> </a>
</pre></div>
<a name="wp928481"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex2.f
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
PROGRAM CHANGE INTERLACE<a name="wp930820"> </a>
integer status, d2aimg, d2setil <a name="wp931550"> </a>
integer*4 WIDTH, HEIGHT, PIXEL_DEPTH, DFIL_PLANE<a name="wp931551"> </a>
parameter (WIDTH = 5,<a name="wp931552"> </a>
+ HEIGHT = 6, <a name="wp931553"> </a>
+ PIXEL_DEPTH = 3, <a name="wp931554"> </a>
+ DFIL_PLANE = 2) <a name="wp931555"> </a>
integer raster_data(PIXEL_DEPTH, WIDTH, HEIGHT)<a name="wp931557"> </a>
C Initialize the image array.<a name="wp931559"> </a>
data raster_data <a name="wp931560"> </a>
+ / 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12, 13,14,15, <a name="wp931561"> </a>
+ 16,17,18, 19,20,21, 22,23,24, 25,26,27, 28,29,30, <a name="wp931562"> </a>
+ 31,32,33, 34,35,36, 37,38,39, 40,41,42, 43,44,45, <a name="wp931563"> </a>
+ 46,47,48, 49,50,51, 52,53,54, 55,56,57, 58,59,60, <a name="wp931564"> </a>
+ 61,62,63, 64,65,66, 67,68,69, 70,71,72, 73,74,75, <a name="wp931565"> </a>
+ 76,77,78, 79,80,81, 82,83,84, 85,86,87, 88,89,90 /<a name="wp931566"> </a>
C Change interlace from pixel to scan plane.<a name="wp931568"> </a>
status = d2setil(DFIL_PLANE)<a name="wp931569"> </a>
C Write the 24-bit raster image to the file.<a name="wp931571"> </a>
status = d2aimg(`Example2.hdf', raster_data, WIDTH, <a name="wp931572"> </a>
+ HEIGHT)<a name="wp931573"> </a>
end<a name="wp931575"> </a>
</pre></div>
<a name="wp928487"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex3.c
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
#include "hdf.h"<a name="wp930852"> </a>
#include "hcomp.h"<a name="wp931585"> </a>
#define WIDTH 3<a name="wp931587"> </a>
#define HEIGHT 5<a name="wp931588"> </a>
#define PIXEL_DEPTH 3<a name="wp931589"> </a>
main( )<a name="wp931591"> </a>
{<a name="wp931592"> </a>
/* Initialize the image array. */<a name="wp931593"> </a>
static uint8 raster_data[HEIGHT][WIDTH][PIXEL_DEPTH] = <a name="wp931594"> </a>
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, <a name="wp931595"> </a>
10,11,12, 13,14,15, 16,17,18, <a name="wp931596"> </a>
19,20,21, 22,23,24, 25,26,27, <a name="wp931597"> </a>
28,29,30, 31,32,33, 34,35,36, <a name="wp931598"> </a>
37,38,39, 40,41,42, 43,44,45 }; <a name="wp931599"> </a>
static comp_info compress_info;<a name="wp931600"> </a>
intn status;<a name="wp931601"> </a>
/* Initialize JPEG compression structure. */<a name="wp931603"> </a>
compress_info.jpeg.quality = 60;<a name="wp931604"> </a>
compress_info.jpeg.force_baseline = 1;<a name="wp931605"> </a>
/* Set JPEG compression for storing the image. */<a name="wp931607"> </a>
status = DF24setcompress(COMP_JPEG, &compress_info);<a name="wp931608"> </a>
/* Write the 24-bit image data to file. */<a name="wp931610"> </a>
status = DF24addimage("Example2.hdf", (VOIDP)raster_data, <a name="wp931611"> </a>
WIDTH, HEIGHT);<a name="wp931612"> </a>
}<a name="wp931614"> </a>
</pre></div>
<a name="wp928489"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex3.f
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
PROGRAM COMPRESS RIS24<a name="wp930882"> </a>
integer d2aimg, d2scomp, d2sjpeg, status<a name="wp931624"> </a>
integer*4 WIDTH, HEIGHT, PIXEL_DEPTH<a name="wp931625"> </a>
parameter(WIDTH = 3,<a name="wp931626"> </a>
+ HEIGHT = 5,<a name="wp931627"> </a>
+ PIXEL_DEPTH = 3)<a name="wp931628"> </a>
character raster_data(PIXEL_DEPTH, WIDTH, HEIGHT) <a name="wp931629"> </a>
C Initialize the image array.<a name="wp931631"> </a>
data raster_data <a name="wp931632"> </a>
+ / 1, 2, 3, 4, 5, 6, 7, 8, 9, <a name="wp931633"> </a>
+ 10,11,12, 13,14,15, 16,17,18, <a name="wp931634"> </a>
+ 19,20,21, 22,23,24, 25,26,27, <a name="wp931635"> </a>
+ 28,29,30, 31,32,33, 34,35,36, <a name="wp931636"> </a>
+ 37,38,39, 40,41,42, 43,44,45 /<a name="wp931637"> </a>
C Set compression.<a name="wp931639"> </a>
status = d2scomp(COMP_JPEG)<a name="wp931640"> </a>
C Set JPEG parameters to quality = 60, and turn compatibility on.<a name="wp931642"> </a>
status = d2sjpeg(60, 1)<a name="wp931643"> </a>
C Write the 24-bit image data to the HDF file.<a name="wp931645"> </a>
status = d2aimg(`Example2.hdf', raster_data, WIDTH, HEIGHT)<a name="wp931646"> </a>
end<a name="wp931647"> </a>
</pre></div>
<a name="wp928491"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex4.c
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
#include "hdf.h"<a name="wp931390"> </a>
#define WIDTH 5<a name="wp931661"> </a>
#define HEIGHT 6<a name="wp931662"> </a>
#define PIXEL_DEPTH 3<a name="wp931663"> </a>
main( )<a name="wp931665"> </a>
{<a name="wp931666"> </a>
uint8 raster_data[PIXEL_DEPTH][HEIGHT][WIDTH];<a name="wp931667"> </a>
int32 width, height;<a name="wp931668"> </a>
intn interlace, status;<a name="wp931669"> </a>
/* Get the image dimensions from the HDF file. */<a name="wp931671"> </a>
status = DF24getdims("Example2.hdf", &width, &height, <a name="wp931672"> </a>
&interlace);<a name="wp931673"> </a>
/* <a name="wp931675"> </a>
* Read raster data if the dimensions are<a name="wp931676"> </a>
* correct.<a name="wp931677"> </a>
*/<a name="wp931678"> </a>
if (width <= WIDTH && height <= HEIGHT)<a name="wp931679"> </a>
status = DF24getimage("Example2.hdf", (VOIDP)raster_data, <a name="wp931680"> </a>
width, height);<a name="wp931681"> </a>
}<a name="wp931682"> </a>
</pre></div>
<a name="wp931710"> </a><div style="color: #000000; font-family: Times New Roman; font-size: 12pt; font-style: normal; font-variant: normal; font-weight: normal; margin-bottom: 6pt; margin-left: 0pt; margin-right: 0pt; margin-top: 12pt; text-align: left; text-decoration: underline; text-indent: 0pt; text-transform: none">
r24_ex4.f
</div>
<div class="pPreformatted" style="font-family: Arial; font-size: 10pt"><pre class="pPreformatted" style="font-family: Arial; font-size: 10pt">
PROGRAM READ RIS24 <a name="wp931709"> </a>
integer d2gimg, d2gdims, status, width, height, interlace<a name="wp931768"> </a>
integer*4 X_LENGTH, Y_LENGTH, PIXEL_DEPTH<a name="wp931769"> </a>
parameter(X_LENGTH = 5, Y_LENGTH = 6, PIXEL_DEPTH = 3)<a name="wp931770"> </a>
integer raster_data(PIXEL_DEPTH, X_LENGTH, Y_LENGTH)<a name="wp931771"> </a>
C Read the dimensions raster image.<a name="wp931773"> </a>
status = d2gdims(`Example2.hdf', width, height, interlace)<a name="wp931774"> </a>
C Read image data from the HDF file if the dimensions are <a name="wp931776"> </a>
C correct.<a name="wp931777"> </a>
if (width .eq. X_LENGTH .and. height .eq. Y_LENGTH) then<a name="wp931778"> </a>
status = d2gimg(`Example2.hdf', raster_data, width, height)<a name="wp931779"> </a>
endif<a name="wp931780"> </a>
end<a name="wp931782"> </a>
</pre></div>
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