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POVector won't store correct datatype (wchar_t instead of uint16_t)
 

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  1. POVector won't store correct datatype (wchar_t instead of uint16_t)
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    <p>I have some code from the net reading hyperspectral data (image, so lots of integers giving pixel intensity) into a vector. I used the code with success on a Linux system, but now I need the same on a windows system. I use Visual Studio 2008.</p> <p>Reading the data in Linux I get a vector full of integers. On windows I get the integers and then some chars or byte data. I don't know enough to describe it better.</p> <p>The vector is initialized by</p> <pre><code>std::vector&lt; unsigned short int &gt; data; data.resize( samples * lines * bands ); std::fill( data.begin(), data.end(), 0 ); </code></pre> <p>and the relevant code is</p> <pre><code>for( unsigned int i=0; i &lt; num_pixels &amp;&amp; file; ++i ){ char number[sizeof(DataType)]; file.read( number , sizeof( DataType ) ); int l = sizeof(DataType)-1; if (machine_endian != header.big_endian) { for (int j = 0; j &lt; l; j++, l--){ number[j] ^=number[l]; number[l] ^= number[j]; number[j] ^= number[l]; } } unsigned short temp = *((unsigned short int*)number); data[i] = temp; } </code></pre> <p>The machine_endian part is never run. The temp is just to test if I can cast the number into an int. It works fine. However, when I put temp into the vector there's more information inserted than just the int and it's listed as wchar_t. See the image below. I guess it's something to do with type size, but I am clueless as to why. Is it mine or Visual Studios fault? Any ideas?</p> <p><a href="https://i.stack.imgur.com/0pFQP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0pFQP.png" alt=""></a></p>
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    1. CO`wchar_t` is defined as `unsigned short` (and if it's not directly defined as that, it's two bytes and behaves the same way) so it's just typename display issue. Are the numbers correct (regardless of type)?
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      1. USSeth Carnegie
    2. COThanks for the reply! Ok, that clears up a bit. Unfortuantely I can't check the numbers for certain right now, but I have no reason to believe they are incorrect (reasonable value). If it's very important I can try to get the values, but it's a bit of work. But how can they be saved fine in the temp variable and then get extra data in the vector when it's initialized with the same datatype?
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    3. COSorry, English is not my first language, and I don't understand "But how can they be saved fine in the temp variable and then get extra data in the vector when it's initialized with the same datatype?" Could you rephrase the question?
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