Provided by: hdf4-tools_4.3.0-1_amd64 
NAME
hdfimport - imports ASCII or binary data into HDF
SYNOPSIS
hdfimport <infile> [ [-t[ype] output-type | -n] [ <infile> [-t[ype] output-type | -n] ...
] ] -o[utfile] outfile [-r[aster] [ras_opts ...]] [-f[loat]]
DESCRIPTION
hdfimport converts floating point data to HDF Scientific Data Set (SDS) and/or 8-bit
Raster Image Set (RIS8) format, storing the results in an HDF file. The image data can be
scaled about a mean value.
OPTIONS
infile(s)
Name of the input file(s), containing a single two-dimensional or three-dimensional
floating point array in either ASCII text, native floating point, native integer or
HDF SDS format. If an HDF file is used for input, it must contain an SDS. The SDS
need only contain a dimension record and the data, but if it also contains maximum
and minimum values and/or scales for each axis, these will be used. If the input
format is ASCII text or native floating point or native integer, see "Notes" below
on how it must be organized.
-t[ype] output-type
Optionally used for every input ASCII file to specify the data type of the data-set
to be written. If not specified default data type is 32-bit floating point.
output-type can be any of the following: FP32 (default), FP64, INT32, INT16, INT8.
It can be used only with ASCII files.
-n This option is to be used only if the binary input file contains 64-bit floating
point data and the default behaviour (default behaviour is to write it to a 32-bit
floating point data-set) should be overridden to write it to a 64-bit floating
point data-set.
-t[ype] output-type
Data from one or more input files are stored as one or more data sets and/or images
in one HDF output file, "outfile".
-r[aster]
Store output as a raster image set in the output file.
-f[loat]
Store output as a scientific data set in the output file. This is the default if
the "-r" option is not specified.
[ras_opts ...]
-e[xpand] horiz vert [depth]
Expand float data via pixel replication to produce the image(s). "horiz"
and "vert" give the horizontal and vertical resolution of the image(s) to be
produced; and optionally, "depth" gives the number of images or depth planes
(for 3D input data).
-i[nterp] horiz vert [depth]
Apply bilinear, or trilinear, interpolation to the float data to produce the
image(s). "horiz", "vert", and "depth" must be greater than or equal to the
dimensions of the original dataset. If max and min are supplied in input
file, this option clips values that are greater than max or less then min,
setting them to the max and min, respectively.
-p[alfile] palfile
Store the palette with the image. Get the palette from "palfile"; which may
be an HDF file containing a palette, or a file containing a raw palette.
-m[ean] mean
If a floating point mean value is given, the image will be scaled about the
mean. The new extremes (newmax and newmin), as given by:
newmax = mean + max(abs(max-mean), abs(mean-min))
newmin = mean - max(abs(max-mean), abs(mean-min))
will be equidistant from the mean value. If no mean value is given, then
the mean will be:
0.5 * (max + min)
Notes: If the input file format is ASCII text or native floating point or native
integer(32-bit, 16-bit, 8-bit), it must have the following input fields:
format
nplanes
nrows
cols
max_value
min_value
[plane1 plane2 plane3 ...]
row1 row2 row3 ...
col1 col2 col3 ...
data1 data2 data3 ...
Where:
format:
Format designator ("TEXT", "FP32", "FP64", "IN32", "IN16", "IN08").
nplanes, nrows, ncols:
Dimensions are specified in the order slowest changing dimension first.
ncols is dimension of the fastest changing dimension. (horizontal axis or
X-axis in a 3D scale) nrows corresponds to dimension of the vertical axis or
Y-axis in a 3D scale. nplanes corresponds to the slowest changing dimension
i.e. dimension of the depth axis or the Z-axis in a 3D scale ("1" for 2D
input).
max_value:
Maximum data value.
min_value:
Minimum data value.
plane1, plane2, plane3, ...:
Scales for depth axis.
row1, row2, row3, ...:
Scales for the vertical axis.
col1, col2, col3, ...:
Scales for the horizontal axis.
data1, data2, data3, ...:
The data ordered by rows, left to right and top to bottom; then optionally,
ordered by planes, front to back.
For FP32 and FP64 input format, "format", "nplanes", "nrows", "ncols", and "nplanes" are
native integers; where "format" is the integer representation of the appropriate
4-character string (0x46503332 for "FP32" and 0x46503634 for "FP64"). The remaining input
fields are composed of native 32-bit floating point values for FP32 input format, or
native 64-bit floating point values for FP64 input format.
For IN32, IN16 and IN08 input format, "format", "nplanes", "nrows", "ncols", and "nplanes"
are native integers; where "format" is the integer representation of the appropriate
4-character string. The remaining input fields are composed of native 32-bit integer
values for IN32 input format, or native 16-bit integer values for IN16 input format or
native 8-bit integer values for IN08 input format.
EXAMPLES
Convert floating point data in "f1.txt" to SDS format, and store it as an SDS in HDF file
"o1":
hdfimport f1.txt -o o1
Convert floating point data in "f2.hdf" to 8-bit raster format, and store it as an RIS8 in
HDF file "o2":
hdfimport f2.hdf -o o2 -r
Convert floating point data in "f3.bin" to 8-bit raster format and SDS format, and store
both the RIS8 and the SDS in HDF file "o3":
hdfimport f3.bin -o o3 -r -f
Convert floating point data in "f4" to a 500x600 raster image, and store the RIS8 in HDF
file "o4". Also store a palette from "palfile" with the image:
hdfimport f4 -o o4 -r -e 500 600 -p palfile
Convert floating point data in "f5" to 200 planes of 500x600 raster images, and store the
RIS8 in HDF file "o5". Also scale the image data so that it is centered about a mean
value of 10.0:
hdfimport f5 -o o5 -r -i 500 600 200 -m 10.0
28 May 2016 hdfimport(1)