# stuck: need to define days as VisitDate - StartDate for each row of dataframe (I know I need an apply family fxn here)ĭata1$Days <- (VisitDate,ID,function(x)))) I think this can work but need some help with syntax.
I am trying to use the base plotting function, and have taken the approach of writing a plotting function to call later. Each scatterplot should be labeled with count1, count2 etc as appropriate. Subjects in Treatgroup 0 are one color, subjects in treatgroup 1 are another color. In each scatterplot, I need to plot the value of the count (y axis) against "Days" (x-axis) and connect the dots for each subject. I have to make a multiplot figure with one scatterplot for each of the count variables (a plot for count1, one for count2, etc). Should be an apply type function, I guess. I need to calculate "Days", which is just the visitdate - the startdate, for each row. Each row corresponds to a single timepoint at which there are values in columns "count1, count2, weirdname3, etc.
I have a dataset of the form below, with multiple subjects, each in either Treatgroup 0 or Treatgroup 1, each subject contributing several rows of data. I am half way there, quite sure how to get it. A scatterplot is plotted for each pair.I have a slightly complicated plotting task. The basic syntax for creating scatterplot matrices in R is −įollowing is the description of the parameters used −įormula represents the series of variables used in pairs.ĭata represents the data set from which the variables will be taken.Įach variable is paired up with each of the remaining variable. We use pairs() function to create matrices of scatterplots. When we have more than two variables and we want to find the correlation between one variable versus the remaining ones we use scatterplot matrix. When we execute the above code, it produces the following result − Scatterplot Matrices # Plot the chart for cars with weight between 2.5 to 5 and mileage between 15 and 30.
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