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    <p>

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          <img id="LongDescNotReq1" border="0"src="images/hdf_logo.jpg" width="90" height="70" alt="The HDF Group" valign="top" />
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          <b><H1>HDF Reference Manual</H1></b>
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    <blockquote>
<a name="wp440968"> </a><h2 class="pRef_DFU_RoutineName">
<p align=right><A HREF="RM_Section_II_DFULOP.html">
[DFU Interface]</A><a HREF="RMTOP.html"><b>[Top]</b></a>
</p>
<hr />
DFUfptoimage/duf2im
</h2>
<a name="wp440969"> </a><p style="font-weight: normal" class="pSignature">
int DFUfptoimage(int32 <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">hdim</span>, int32 <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">vdim</span>, float32 <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">max</span>, float32 <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">min</span>, float32 *<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">hscale</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>float32 *<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">vscale</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>float32 *<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">data</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>uint8 *<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">palette</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>char *<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">outfile</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>int<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> ct_method</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>int32<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> hres</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>int32<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> vres</span>,<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault"> </span>int <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">compress</span>)
</p>
<a name="wp443710"> </a><p class="pBodyRelative">
</p>
<div align="left">
<table border="0" cellpadding="2" cellspacing="8" bgcolor="White" id="wp441073table441071">
  <caption></caption>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441073"> </a><div style="margin-top: 0pt" class="pCellVariable">
<span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">hdim</span>
</div>
</td>
    <td><a name="wp441075"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441077"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Horizontal dimension of the input data
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441079"> </a><div style="margin-top: 0pt" class="pCellVariable">
vdim
</div>
</td>
    <td><a name="wp441081"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441083"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Vertical dimension of the input data
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441085"> </a><div style="margin-top: 0pt" class="pCellVariable">
max
</div>
</td>
    <td><a name="wp441087"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441089"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Maximum value of the input data
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441091"> </a><div style="margin-top: 0pt" class="pCellVariable">
min
</div>
</td>
    <td><a name="wp441093"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441095"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Minimum value of the input data
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441097"> </a><div style="margin-top: 0pt" class="pCellVariable">
hscale
</div>
</td>
    <td><a name="wp441099"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441101"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Horizontal scale of the input data (optional)
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441103"> </a><div style="margin-top: 0pt" class="pCellVariable">
vscale
</div>
</td>
    <td><a name="wp441105"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441107"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Vertical scale of the input data (optional)
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441109"> </a><div style="margin-top: 0pt" class="pCellVariable">
data
</div>
</td>
    <td><a name="wp441111"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441113"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Buffer containing the input data
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441115"> </a><div style="margin-top: 0pt" class="pCellVariable">
palette
</div>
</td>
    <td><a name="wp441117"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441119"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Pointer to the palette data
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441121"> </a><div style="margin-top: 0pt" class="pCellVariable">
outfile
</div>
</td>
    <td><a name="wp441123"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441125"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Name of the file the image data will be stored in
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441127"> </a><div style="margin-top: 0pt" class="pCellVariable">
ct_method
</div>
</td>
    <td><a name="wp441129"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441131"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Color transformation method
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441133"> </a><div style="margin-top: 0pt" class="pCellVariable">
hres
</div>
</td>
    <td><a name="wp441135"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441137"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Horizontal resolution to be applied to the output image
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441139"> </a><div style="margin-top: 0pt" class="pCellVariable">
vres
</div>
</td>
    <td><a name="wp441141"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441143"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Vertical resolution to be applied to the output image
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441145"> </a><div style="margin-top: 0pt" class="pCellVariable">
compress
</div>
</td>
    <td><a name="wp441147"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
IN:
</div>
</td>
    <td><a name="wp441149"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Compression flag
</div>
</td>
</tr>
</table>
</div>
<p class="pBodyRelative">
</p>
<div align="left">
<table border="0" cellpadding="2" cellspacing="8" bgcolor="White" id="wp441152table441150">
  <caption></caption>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441152"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
Purpose
</div></td>
    <td><a name="wp441154"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Converts floating point data to 8-bit raster image format and stores the converted image data in the specified file.
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441156"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
Return value
</div></td>
    <td><a name="wp441158"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Returns <code style="font-family: Courier New; font-size: 8pt" class="cDefName">SUCCEED</code> (or <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">0</span>) if successful and <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">FAIL</span> (or <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">-1</span>) otherwise.
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441160"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
Description
</div></td>
    <td><a name="wp441162"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
This routine is very similar to the utility <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">fptohdf</span>, which takes its input from one or more files, rather than from internal memory. Another difference is that this routine allows compression (run-length encoding), whereas <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">fptohdf</span> does not at present. 
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441164"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
</div></td>
    <td><a name="wp441166"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
As this routine is meant to mimic many of the features of NCSA DataScope, much of the code has been taken directly from the DataScope source.
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441168"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
</div></td>
    <td><a name="wp441176"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Valid values for <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">ct_method</span> are: <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">1</span> (or <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">EXPAND)</span> for expansion and <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">2</span> (or <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">INTERP)</span> for interpolation.
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441172"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
</div></td>
    <td><a name="wp441178"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellDescription">
Valid values for <span style="color: #000000; font-style: italic; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">compress</span> are: <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">0</span> for no compression and <span style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; vertical-align: baseline" class="cDefault">1</span> for compression enabled.
</div>
</td>
</tr>
</table>
</div>
<p class="pBodyRelative">
</p>
<div align="left">
<table border="0" cellpadding="2" cellspacing="8" bgcolor="White" id="wp441301table441179">
  <caption></caption>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441301"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
FORTRAN
</div></td>
    <td><a name="wp441303"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellFortSyntax">
integer function duf2im(hdim, vdim, max, min, hscale, vscale, data, palette, outfile, ct_method, hres, vres, compress)
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441317"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
</div></td>
    <td><a name="wp441319"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellFortVar">
integer hdim, vdim
</div>
</td>
</tr>
  <tr align="left" valign="top">    <td><td nowrap>
<a name="wp441321"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
</div></td>
    <td><a name="wp441323"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellFortVar">
real max, min, hscale, vscale, data
</div>
</td>
</tr>
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<a name="wp441325"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
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    <td><a name="wp441327"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellFortVar">
character*(*) palette, outfile
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<a name="wp441329"> </a><div style="font-style: normal; margin-bottom: 0pt; margin-top: 0pt; text-transform: none" class="pCellHeadingWW">
&#160;
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    <td><a name="wp441331"> </a><div style="margin-bottom: 0pt; margin-top: 0pt" class="pCellFortVar">
integer ctmethod, hres, vres, compress
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