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You can access the value as unsigned short and convert it to a
string:<br>
<br>
unsigned short SamplesPerPixel = *((unsigned short *)
p_Elem.GetByteValue()->GetPointer());<br>
std::stringstream s_SamplesPerPixel;<br>
s_SamplesPerPixel << SamplesPerPixel;<br>
p_Str = s_SamplesPerPixel.str();<br>
<br>
Christina<br>
<br>
Am 23.03.2012 09:14, schrieb Daanen:
<blockquote cite="mid:000e01cd08cc$fd1cdc10$f7569430$@koelis.com"
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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I recently upgrade from
itk 3.16 to itk 4.1.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I thus have to update my
code source to use the new gdcm core (2.0.x)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Previously, I wrote a
method (for internal use) which returns the value of a given
Tag as string.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This method now uses a
gdcm::DataElement as parameter.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">But I can’t get the
value of the DataElement as a string in all the case.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My code is the following<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New"; color: blue;"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New"; color: blue;"
lang="EN-US">static</span><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US"> <span
style="color: blue;">bool</span> GetValue(std::string
&p_Str, <span style="color: blue;">const</span>
gdcm::DataElement &p_Elem)<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US">{<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US">
p_Str.clear();<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New"; color: green;"
lang="EN-US"> </span><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US">if
(p_Elem.GetByteValue() == NULL) return false;<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US">
p_Str =
std::string(p_Elem.GetByteValue()->GetBuffer(),p_Elem.GetByteValue()->GetLength());<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US"> <span
style="color: blue;">return</span> !p_Str.empty();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Courier New";" lang="EN-US">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Courier New";" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">But for a given tag
(SamplesPerPixel, which VR = US and Value is 1), p_Str is
not “1” but “ “. This seems to indicate that <o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;
font-family: "Courier New";" lang="EN-US">p_Str =
std::string(p_Elem.GetByteValue()->GetBuffer(),p_Elem.GetByteValue()->GetLength());<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">is not the correct way
to get the value of a US element in a string !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Is there a way to do
want I want in a safe manner (not dependent to VR) ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for help<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Vincent<o:p></o:p></span></p>
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