using roman letter in Latex

(Original Post:

Ok, we have to admit that it is not easy to input roman numerals in Latex. There is still a way.
In the preamble, i.e. before \begin{document}, define

\newcommand{\rmnum}[1]{\romannumeral #1}
\newcommand{\Rmnum}[1]{\expandafter\@slowromancap\romannumeral #1@}

Then in the document part, \rmnum{num} is used to input the roman numeral of num,\Rmnum is for the uppercase. If you prefer to use other commands, just change the red part in the definition part.

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Line space in latex

By forcing line space in latex, one can use the command below


it indicates to make the space 5mm between two lines

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Install cisco VT camera II driver on win7 x64

The instruction to get the Cisco VT camera II to work with Windows 7 (x64):

  1. get this file from logitech. download qc1051enu_x64.exe and run it,
  2. when error windows open that state that the software is not compatible, copy C:\Program Files (x86)\Logitech to C:\Logitech,
  3. edit C:\Logitech\QuickCamWebInstall\Drivers\x64\PRO364\IPRO364V.inf and replace all 08CE with 08C7 and save the file,
  4. open computer manager (right click on My computer -> manage -> device manager) and update drive on unidentified device by pointing it to C:\Logitech,
  5. do not update drivers from internet when asked.

it works quite well. The original contribution is from   baziuk.wg

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insert several pics on one line into latex

\includegraphics[bb=0 0 483 291, width=0.3\textwidth]{p2p.png}
\includegraphics[bb=0 0 483 291, width=0.3\textwidth]{dns.png}
\includegraphics[bb=0 0 483 291, width=0.3\textwidth]{ftp.png}

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import .png pic into latex, classic error

The error below is the classic error when you work with png file instead of eps.

Cannot determine size of graphic in figuras/picture.png (noBoundingBox). …

To avoid this issue, you have to manually set the picture bounds. Check the picture size in some Image viewer and include the image as follows:

\includegraphics[scale=0.5,bb=0 0 385 567]{figuras/picture.png}
\caption{Some description about the picture}

The above code includes an image of 386 x 567 pixels. You can also change the scale to reduce or increase the image size.

This is retrieved from internet.

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Hello world!

Welcome to This is your first post. Edit or delete it and start blogging!

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