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c
c In this example we will (1) open the "SwathFile" HDF file, (2) attach to
c the "Swath1" swath, and (3) write data to the "Longitude",
c "Longitude" and "Spectra" fields.
c
program writefields
integer status, swwrfld, swwrattr, swdetach, swclose
integer track, start(3),stride(3),count(3)
integer*4 swfid, SWid, swopen, swattach, attr(4)
real*4 lng(10), lat(10)
real*8 plane(800), tme(20)
integer DFACC_RDWR
parameter (DFACC_RDWR=3)
integer DFNT_INT32
parameter (DFNT_INT32=24)
c Define longitude values along the cross track
do i=1,10
lng(i) = i-1.0
enddo
c
c Open the HDF swath file, "SwathFile.hdf"
c
swfid = swopen("SwathFile_created_with_hadeos_sample_file_write"//
1"r_of_HDFEOS2_version_219_or_higher_release.hdf", DFACC_RDWR)
if (swfid .NE. -1) then
SWid = swattach(swfid, "Swath1")
if (swid .NE. -1) then
c Write data starting at the beginning of each cross track
start(1) = 0
stride(1) = 1
stride(2) = 1
count(1) = 10
count(2) = 1
c
c Loop through all the tracks, incrementing the track starting
c position by one each time.
c
do track = 1,20
start(2) = track - 1
status = swwrfld(swid, "Longitude", start, stride,
1 count, lng)
do xtrack = 1,10
lat(xtrack) = track
enddo
status = swwrfld(swid, "Latitude", start, stride,
1 count, lat)
enddo
do i = 1,20
tme(i) = 34574087.3 + 84893.2*(i-1)
enddo
start(1) = 0
stride(1) = 1
count(1) = 20
status = swwrfld(swid, "Time", start, stride, count, tme)
c
c Write Spectra one plane at a time
c Value is 100 * track index + band index (0-based)
c
start(1) = 0
start(2) = 0
count(1) = 20
count(2) = 40
count(3) = 1
stride(3) = 1
do i=1,15
start(3) = i - 1
do j=1,40
do k=1,20
plane((j-1)*20+k) = (j-1)*100 + i-1
enddo
enddo
status = swwrfld(swid, "Spectra", start, stride,
1 count, plane)
enddo
c Write User Attribute
attr(1) = 3
attr(2) = 5
attr(3) = 7
attr(4) = 11
status = swwrattr(swid, "TestAttr", DFNT_INT32, 4, attr)
endif
endif
status = swdetach(swid)
status = swclose(swfid)
stop
end
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