Swift a graph to end in 0?

Question

0 个投票

How do I swift the graph plot so that the end point becomes 0?

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Image Analyst 2013-10-19

What does "swift" mean in this context?

请先登录，再进行评论。

请先登录，再回答此问题。

Follow Question

Answer 1

Mercu Vestergaard 2013-10-19

在 MATLAB Online 中打开

0 个投票

Eg. as done here in R

 #### CREATE PLOT
  IS  <- cumsum(IS_error_N[2:length(IS_error_N)]^2)-cumsum(IS_error_A^2)
  OOS <- cumsum(OOS_error_N^2)-cumsum(OOS_error_A^2)
  df  <- data.frame(x=seq.int(from=start + 1 + est_periods_OOS, to=end), 
                    IS=IS[(1 + est_periods_OOS):length(IS)], 
                    OOS=OOS) #Because you lose one observation due to the lag
  #Shift IS errors vertically, so that the IS line begins 
  # at zero on the date of first OOS prediction. (see Goyal/Welch (2008, p. 1465))
  df$IS <- df$IS - df$IS[1] 
  df  <- melt(df, id.var="x") 
  plotGG <- ggplot(df) + 
    geom_line(aes(x=x, y=value,color=variable)) + 
    geom_rect(data=data.frame(),#Needed by ggplot2, otherwise not transparent
              aes(xmin=1973, xmax=1975,ymin=-0.2,ymax=0.2), 
              fill='red',
              alpha=0.1) + 
    scale_y_continuous('Cumulative SSE Difference', limits=c(-0.2, 0.2)) + 
    scale_x_continuous('Year')
  ##