绘图

R绘图：

setwd("D:\\Program Files\\R\\data")  #设置图的工作区间

data<-read.delim("test.txt");names(data);   #读取数据源

 

m<-paste(levels(data$年月)[1],levels(data$年月)[length(levels(data$年月))],sep="~");  #取时间轴的区间

 

 t<-paste(m,"年月",sep=" ");    #连接时间轴区间和“年月”这两个字符串

 

y<-paste("价格,币别为：",levels(data$币别),sep=" ");    #连接两个字符串

 

coplot(data$金额~data$年月|data$Product_ID,ylim=c(min(data$金额),max(data$金额)),xlab=t,ylab=y,cex=1.5)    #绘制图形，不同的productId下 的横轴为年月，纵轴为金额的图

 

关于coplot():

函数格式如下：

coplot(formula, data, given.values, panel = points, rows, columns,       show.given = TRUE, col = par("fg"), pch = par("pch"),        bar.bg = c(num = gray(0.8), fac = gray(0.95)),       xlab = c(x.name, paste("Given :", a.name)),       ylab = c(y.name, paste("Given :", b.name)),       subscripts = FALSE,       axlabels = function(f) abbreviate(levels(f)),       number = 6, overlap = 0.5, xlim, ylim, ...) co.intervals(x, number = 6, overlap = 0.5)

 

 

 

formula

a formula describing the form of conditioning plot. A formula of the form y ~ x | a indicates that plots of y versus x should be produced conditional on the variablea. A formula of the form y ~ x| a * b indicates that plots ofy versus x should be produced conditional on the two variablesa and b.

All three or four variables may be either numeric or factors. When x ory are factors, the result is almost as if as.numeric() was applied, whereas for factora or b, the conditioning (and its graphics if show.given is true) are adapted.

data

a data frame containing values for any variables in the formula. By default the environment wherecoplot was called from is used.

given.values

a value or list of two values which determine how the conditioning on a andb is to take place.

When there is no b (i.e., conditioning only on a), usually this is a matrix with two columns each row of which gives an interval, to be conditioned on, but is can also be a single vector of numbers or a set of factor levels (if the variable being conditioned on is a factor). In this case (no b), the result ofco.intervals can be used directly as given.values argument.

panel

a function(x, y, col, pch, ...) which gives the action to be carried out in each panel of the display. The default ispoints.

rows

the panels of the plot are laid out in a rows by columns array.rows gives the number of rows in the array.

columns

the number of columns in the panel layout array.

show.given

logical (possibly of length 2 for 2 conditioning variables): should conditioning plots be shown for the corresponding conditioning variables (defaultTRUE).

col

a vector of colors to be used to plot the points. If too short, the values are recycled.

pch

a vector of plotting symbols or characters. If too short, the values are recycled.

bar.bg

a named vector with components "num" and "fac" giving the background colors for the (shingle) bars, fornumeric and factor conditioning variables respectively.

xlab

character; labels to use for the x axis and the first conditioning variable. If only one label is given, it is used for the x axis and the default label is used for the conditioning variable.

ylab

character; labels to use for the y axis and any second conditioning variable.

subscripts

logical: if true the panel function is given an additional (third) argument subscripts giving the subscripts of the data passed to that panel.

axlabels

function for creating axis (tick) labels when x or y are factors.

number

integer; the number of conditioning intervals, for a and b, possibly of length 2. It is only used if the corresponding conditioning variable is not afactor.

overlap

numeric < 1; the fraction of overlap of the conditioning variables, possibly of length 2 for x and y direction. When overlap < 0, there will begaps between the data slices.

xlim

the range for the x axis.

ylim

the range for the y axis.

...

additional arguments to the panel function.

x

a numeric vector.