10 steps to linking PowerPoint slides
By Susan Harkins April 11, 2013, 6:58 AM PDT Takeaway: Build a little navigation into your slide shows by putting PowerPoint action buttons and links to work.…
View More 10 steps to linking PowerPoint slidesSummary statistics by two or more factor variables
How about this, still using tapply()? It’s more versatile than you knew! with(mtcars, tapply(mpg, list(cyl, gear), sum)) # three four five # four 21.5 215.4 56.4…
View More Summary statistics by two or more factor variablesFactors in R
Factors in R Conceptually, factors are variables in R which take on a limited number of different values; such variables are often refered to as…
View More Factors in RFrequencies and Crosstabs
This section describes the creation of frequency and contingency tables from categorical variables, along with tests of independence, measures of association, and methods for graphically…
View More Frequencies and CrosstabsR- Table Function
R Tutorial Cyclismo.org Two Way Tables Here we look at some examples of how to work with two way tables. We assume that you can enter…
View More R- Table Function如何看懂眼镜的处方？
医生在验光的最后程序结束后，往往会开出眼镜处方，让屈光不正的朋友们去眼镜店配眼镜。很多人看着一堆数据觉得高深莫测，其实，眼镜的处方并不难阅读和理解。 一、左右眼的表示： 右眼通常显示在眼镜处方的前面，用英文简写“R”或者“O.D”表示。左眼用英文简写“L”或者“O.S”表示。 二、处方由5个主要部分的数据组成： 球镜度数、柱镜度数、柱镜的轴向、瞳孔距离、以及下加光附加值。 三、球镜是指“近视或者远视的镜片”。用英文简写“S”或者“SPH”表示。球镜用来矫正近视眼或远视眼。如果球镜度数前是负符号（-）显示，即为近视眼；如果球镜度数前是正符号（+），即为远视眼。 四、球镜（近视、远视）的度数通常英文“D”表示，一个“D”等于100度的屈光度。 例如：处方显示“OD S：-1.75D”就是指右眼近视175度。 处方显示“OS S：+2.00D”就是指左眼远视200度。 五、柱镜是指“散光的镜片”。用英文简写“C”或者“CYL”表示。柱镜用来矫正散光眼。如果柱镜度数前是负符号（-）显示，即为近视散光；如果柱镜度数前是正符号（+），即为远视散光。 六、柱镜（散光）的度数通常英文“DC”表示，一个“DC”等于100度的散光。 …
View More 如何看懂眼镜的处方？Introduction To Graphs In VB.NET Using Microsoft Chart Control
Good moorning! I searched the VB.NET tutorials section and I didn’t manage to find a tutorial showing the process of creating graphics in VB.NET and…
View More Introduction To Graphs In VB.NET Using Microsoft Chart ControlCharting with VB.Net 2010
I have stopped updating this blog. This link can also be found in my Website. http://www.siddharthrout.com/2011/10/18/charting-with-vb-net-2010/ There are many tutorials on the web regarding VB.Net…
View More Charting with VB.Net 2010Video Stabilization – Easy, Fast, FREE !!!
YouTube added video stabilization tool to new video editor. And its super easy to use: Upload your video go to video editor and click “Stabilize”. It…
View More Video Stabilization – Easy, Fast, FREE !!!Open Access .mdb Files with RODBC
Getting data into R can be done by reading colon separated files (.csv) via the read.table() function. It is also possible to access databases directly…
View More Open Access .mdb Files with RODBC