<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
On 5/8/2012 11:11 AM, Philip Tait wrote:
<blockquote cite="mid:4fa953d2.4574b60a.76bc.ffffc485@mx.google.com"
type="cite">Isn't this a known issue, fixed in 3.0.7?<br>
</blockquote>
<br>
Thanks for the quick reply. It is embarrassing to post a problem
and not be using the latest release. So I've downloaded/installed
3.0.7. Unfortunately, the same behavior persists (i.e., unwanted,
silent conversion from 32 to 64 bit floats) as illustrated below:<br>
<br>
>>> import os<br>
>>> import sys<br>
>>> import pyfits<br>
>>> sys.version<br>
'2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit
(Intel)]'<br>
>>> pyfits.__version__<br>
'3.0.7'<br>
>>> path = ...<br>
>>> HDUs = pyfits.open (path,mode='readonly')<br>
>>> HDUs['primary'].header['bitpix']<br>
32<br>
>>> HDUs['primary'].data.dtype<br>
dtype('float64')<br>
>>> HDUs['primary'].header['bitpix']<br>
-64<br>
>>> <br>
<br>
Is this a bug that should be reported?<br>
<br>
Thanks,<br>
-- jv<br>
<br>
<br>
<br>
<br>
<br>
<br>
<blockquote cite="mid:4fa953d2.4574b60a.76bc.ffffc485@mx.google.com"
type="cite"><br>
<span style="font-family:Prelude, Verdana, san-serif;"><br>
<br>
</span><span id="signature">
<div style="font-family: arial, sans-serif; font-size:
12px;color: #999999;">-- Sent from my HP Pre3</div>
<br>
</span><span style="color:navy; font-family:Prelude, Verdana,
san-serif; ">
<hr style="width:75%" align="left">On May 8, 2012 6:59, Jim
Vickroy <a class="moz-txt-link-rfc2396E" href="mailto:jim.vickroy@noaa.gov"><jim.vickroy@noaa.gov></a> wrote: <br>
<br>
</span>Hi Pyfits users,
<br>
<br>
Consider:
<br>
<br>
>>> import pyfits
<br>
>>> pyfits.__version__
<br>
'3.0.5'
<br>
>>> path = ...
<br>
>>> HDUs = pyfits.open (path,mode='readonly')
<br>
>>> HDUs['primary'].header['bitpix']
<br>
32
<br>
>>> HDUs['primary'].data.dtype
<br>
dtype('float64')
<br>
>>> HDUs['primary'].header['bitpix']
<br>
-64
<br>
>>>
<br>
<br>
Why is the conversion from 32 to 64 bit floats silently occurring?
How <br>
can I prevent it?
<br>
<br>
Thanks,
<br>
-- jv
<br>
<br>
_______________________________________________
<br>
AstroPy mailing list
<br>
<a class="moz-txt-link-abbreviated" href="mailto:AstroPy@scipy.org">AstroPy@scipy.org</a>
<br>
<a class="moz-txt-link-freetext" href="http://mail.scipy.org/mailman/listinfo/astropy">http://mail.scipy.org/mailman/listinfo/astropy</a>
<br>
</blockquote>
<br>
</body>
</html>