I've just came across with the best - so far - solution between functionality, quality, export formats and price for tutorial and presentation creation software, including desktop video capture.
This great solution is Wink.
I've tested several solutions like this one before, all usually they all do the same:
capture the screen, compose the frames with some tags or highlight rectangles and export it to a Flash SWF video.
But Wink is different. It does not capture the screen as a simple bitmap, it also captures the objects, like the mouse pointer, and allows to freely specify the frames per second for screen capture and video export.
This allows a much more flexible frame composition, like positioning the mouse cursor on any part of the screen, change its pointer and export the video with comfortable frame per second ratio where the mouse cursor is automatically moved even if it has been positioned on a different location from where it was captured.
./M6
Unix/Linux Cheat Sheets
I've just found a great collection of several Unix and Linux cheat sheets.
It covers system commands and tools like AWK and SED.
It's the Linux-Unix cheat sheets - The ultimate collection.
./M6
It covers system commands and tools like AWK and SED.
It's the Linux-Unix cheat sheets - The ultimate collection.
./M6
How to Create PDF from LaTeX
I was using Ghostscript to generate a PDF document written in LaTeX, and I was getting the default red boxes links around the text, which are really ugly.
The search for information about how to remove those red box links returned a very useful document, How to Create PDF from LaTeX.
As the title implies, it is a document that teaches how to create a PDF file from LaTeX, but it covers topics like how to configure the links, which was precisely what I was looking for.
./M6
The search for information about how to remove those red box links returned a very useful document, How to Create PDF from LaTeX.
As the title implies, it is a document that teaches how to create a PDF file from LaTeX, but it covers topics like how to configure the links, which was precisely what I was looking for.
./M6
Algorithms in LaTeX
I've found this great easy to follow document about algorithms in LaTeX:
The algorithms bundle.
It covers the algorithm and algorithmic environments, the state, comment, loops, conditions and even its customizations.
./M6
The algorithms bundle.
It covers the algorithm and algorithmic environments, the state, comment, loops, conditions and even its customizations.
./M6
Detexify - LaTeX symbol classifier
I was looking for a LaTeX symbol code when I faced, once more, the problem of taking too much time to find the code for a certain symbol.
LaTeX usually has what one needs, but finding it can take a while.
But this time I got luck. I found Detexify2 - LaTeX symbol classifier which will recognize a handwritten symbol and show the LaTeX corresponding matches.
It worked great for me, and this is now one great tool to have nearby whenever I'm using LaTeX.
./M6
LaTeX usually has what one needs, but finding it can take a while.
But this time I got luck. I found Detexify2 - LaTeX symbol classifier which will recognize a handwritten symbol and show the LaTeX corresponding matches.
It worked great for me, and this is now one great tool to have nearby whenever I'm using LaTeX.
./M6
KDE on Windows
I've just installed the KDE on Windows and my XP is now a happier operating system.
I was looking for Amarok, since that's by far the player I love most, but the release I'm using, 4.3.00, seems not to have it yet.
Nevertheless, I've setup some packages and now I'm able to run things like Kate, Dolphin and KMahjongg .
I love Dolphin as a file manager, since it's philosophy is suited to my needs and usage.
Too bad the Shift+F4 in Dolphin and the terminal command in Kate does not call the DOS box like it calls a terminal in Linux.
This project is not in the final state, so there's not many applications and it can be unsuitable for daily use.
But this is a very cool project and I'll keep an eye on it and, when possible, I'll try to make some changes like using Dolphin, Amarok, Kate and other applications that I prefer to Windows alternatives.
Here's some pictures of some application running on my XP:
Dolphin running on Windows XP
Konqueror running on Windows XP
KWrite running on Windows XP
KDE system settings running on Windows XP
./M6
I was looking for Amarok, since that's by far the player I love most, but the release I'm using, 4.3.00, seems not to have it yet.
Nevertheless, I've setup some packages and now I'm able to run things like Kate, Dolphin and KMahjongg .
I love Dolphin as a file manager, since it's philosophy is suited to my needs and usage.
Too bad the Shift+F4 in Dolphin and the terminal command in Kate does not call the DOS box like it calls a terminal in Linux.
This project is not in the final state, so there's not many applications and it can be unsuitable for daily use.
But this is a very cool project and I'll keep an eye on it and, when possible, I'll try to make some changes like using Dolphin, Amarok, Kate and other applications that I prefer to Windows alternatives.
Here's some pictures of some application running on my XP:
Dolphin running on Windows XP
Konqueror running on Windows XP
KWrite running on Windows XP
KDE system settings running on Windows XP./M6
Reorder columns in R
I got the need to reorder the column order or a data frame in R and after searching a little, I've found a very easy way to do it.
Having a data frame named test like
all that is required is to reassign the data frame using a new column order, like
And that solves the problem.
This seems to work both with a data frame and a matrix.
./M6
Having a data frame named test like
a b c d e
[1,] 1 11 21 31 41
[2,] 2 12 22 32 42
[3,] 3 13 23 33 43
[4,] 4 14 24 34 44
[5,] 5 15 25 35 45
all that is required is to reassign the data frame using a new column order, like
new_column_order <- c("b", "c", "a", "e", "d")
test <- test[,new_column_order]
And that solves the problem.
This seems to work both with a data frame and a matrix.
./M6
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