t_ag = aggregate(cbind(CPC, PM25)~SiteID+Date+Session+stType2,
data = t,
FUN = mean)
Thursday, October 1, 2015
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It took me a while to figure out how to insert a space in Mathtype equations. This is especially useful when you write an equation with mult...
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Recently I read post from Dr. Doug Hull's blog: http://blogs.mathworks.com/videos/2009/10/23/basics-volume-visualization-19-defining-s... -
To get the slope of a pair of x and y, usually I first plot the curve and then add the trend line. Actually there are two functions i...