... | edited Jun 20 at 9:12 Community♦ 111 silver badge answered Sep 6 '13 at 18:58 ...

...e = v(n) - v(n-1) You can get a perpendicular to this by rotating it by 90°. In 2D this is easy as: rotated.x = -unrotated.y rotated.y = unrotated.x So no trigonometry or slopes involved. Normalizing the vector to unit-length is not required either. If you want to test if a point is on o...

... Each view has its own coordinate system - with an origin at 0,0 and a width and height. This is described in the bounds rectangle of the view. The frame of the view, however, will have its origin at the point within the bounds rectangle of its superview. The outermost view of your v...

... | edited Oct 19 '15 at 0:04 modeeb 42144 silver badges1616 bronze badges answered Sep 23 '10 at 18:27...

... 340 Read-Host is a simple option for getting string input from a user. $name = Read-Host 'What is y...

... answered Jan 20 '13 at 21:53 jamiebjamieb 8,2371212 gold badges4242 silver badges5959 bronze badges ...

... 508 If you just need to inspect what's happening on a page, you might try the Visual Event bookmark...

... 160 There are times that using OPTION(RECOMPILE) makes sense. In my experience the only time this i...

...I would plot your data: ##Subset the necessary columns dd_sub = datos[,c(20, 2,3,5)] ##Then rearrange your data frame library(reshape2) dd = melt(dd_sub, id=c("fecha")) All that's left is a simple ggplot command: ggplot(dd) + geom_line(aes(x=fecha, y=value, colour=variable)) + scale_colour_man...

...dsarnold 94.7k1919 gold badges157157 silver badges210210 bronze badges 1 ...