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r-tutorial [2011/10/13 00:00] liuyipei |
r-tutorial [2011/10/13 00:09] liuyipei |
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# R as a graphics tool | # R as a graphics tool | ||
# Define a vector named cars with five values | # Define a vector named cars with five values | ||
- | cars <- c(1, | + | my.vector |
- | # Plot the values in cars with default options | + | # Some basic variables that come with R to play with |
- | plot(cars) | + | head(cars) |
+ | dim(cars) | ||
- | r <- rlnorm(1000) | + | plot(x=cars$speed, y=cars$dist, |
- | h <- hist(r, | + | |
- | plot(h$counts, | + | |
- | log=" | + | |
- | | + | hist(cars$speed) |
- | | + | |
- | | + | |
- | | + | |
- | | + | |
# Primitive data types | # Primitive data types | ||
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my.data <- as.matrix(read.table(" | my.data <- as.matrix(read.table(" | ||
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# The columns of a matrix can have symbolic names | # The columns of a matrix can have symbolic names |