Finally we'll send the figure directly to a Want to change the colors later on, there's only one place in the file that We'll also use a vector for storing the colors to be used in our graph so if we In the C:/R directory (you'll use a different path if not using Windows). The fileĬontains an additional set of values for SUVs. Now let's read the graph data directly from a tab-delimited file. Title(ylab="Total", col.lab=rgb(0,0.5,0)) # Create a legend at (1, g_range) that is slightly smaller # (cex) and uses the same line colors and points used by # the actual plots legend(1, g_range, c("cars","trucks"), cex=0.8,Ĭol=c("blue","red"), pch=21:22, lty=1:2) # Label the x and y axes with dark green text title(xlab="Days", col.lab=rgb(0,0.5,0)) # Create a title with a red, bold/italic font axis(2, las=1, at=4*0:g_range) # Create box around plot box() # Graph trucks with red dashed line and square points # Make x axis using Mon-Fri labels axis(1, at=1:5, lab=c("Mon","Tue","Wed","Thu","Fri")) # Make y axis with horizontal labels that display ticks at # every 4 marks. Plot(cars, type="o", col="blue", ylim= g_range, Turn off axes and # annotations (axis labels) so we can specify them ourself # Calculate range from 0 to max value of cars and trucks g_range <- range(0, cars, trucks) # Graph autos using y axis that ranges from 0 to max # value in cars or trucks vector. We'llĪlso compute the y-axis values using the max function so any changes to ourĭata will be automatically reflected in our graph. Next let's change the axes labels to match our data and add a legend. Title(main="Autos", col.main="red", font.main=4) Plot(cars, type="o", col="blue", ylim=c(0,12)) # Graph trucks with red dashed line and square points lines(trucks, type="o", pch=22, lty=2, col="red") # Create a title with a red, bold/italic font Trucks <- c(2, 5, 4, 5, 12) # Graph cars using a y axis that ranges from 0 to 12 Will be large enough to fit the truck data: Now let's add a red line for trucks and specify the y-axis range directly so it Plot(cars, type="o", col="blue") # Create a title with a red, bold/italic font title(main="Autos", col.main="red", font.main=4) # Graph cars using blue points overlayed by a line Let's add a title, a line to connect the points, and some color: # Graph the cars vector with all defaults The graph produced by each example is shown on the right.įirst we'll produce a very simple graph using the values in the car vector: The areas in bold indicate new text that was added to the previousĮxample. So why do some “dumb people” go through all the trouble to use this “inconvenient” method? Simply because it offers a lot more controls, and performs way better when dealing with massive amounts of data.The following is an introduction for producing simple graphs with the Yes, it is highly recommended to do so, if you don’t want a corrupted file.
But of course, there are a lot more, I will leave a link to the official PHP manual below if you are interested. Take note of the second “mode” parameter – w stands for “write”m and a stands for “append”.