作者josephw (Livin' on A Prayer)
看板NCTU-STAT95G
标题[分享]彩色无痕迹平面版 渐层背景!
时间Sun May 18 15:52:37 2008
###########彩色无痕迹版之平面板!!!!!!!!!!!!!!!!
#################NOTE###################################################
## x与y 是图型的范围, 需给一向量
## ((1) r,g,b 在 [0,1]之间, 越低越深色 反之越接近浅色;
## (2) xcorint (ycorint)是x座标(y座标)位数的间格
## (3) 若不要加外框在最後 axbox打FALSE
## (4) r, g, b 只要有1个等於1就是纯白
## 其余与plot 里参数类似
#########################################################################
background2_1 <- function(x = c(-20,20), y = c(-20,20), r = 0.5, g=0.5, b =
0.5, xcorint = 5, ycorint = 5, axbox = TRUE, xlable="",ylable="",title ="")
{
ax <- min(x)
bx <- max(x)
ay <- min(y)
by <- max(y)
if(ax == bx || ay == by ||r > 1 ||r < 0 ||g > 1 ||g < 0 ||b > 1 ||b < 0 ){
warning("给我去看note!!")
return(0);
}
if(xcorint > bx || ycorint > by){
warning("间隔大於你的最大轴座标啦")
return(0);
}
plot(x, y, type='n', axes=F, xlab=xlable, ylab=ylable, main=title)
i<-1
while(r+i*0.005 < 1 && g+i*0.005 < 1 && b+i*0.005 < 1){
if(r == 0){
if(b == 0)
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(0,g+i*0.005,0), lty=0)
else if(g == 0)
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(0,0,b+i*0.005), lty=0)
else
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(0,g+i*0.005,b+ i*0.005), lty=0)
}
else if(b == 0){
if(g == 0)
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(r+i*0.005,0,0), lty=0)
else
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(r+i*0.005,g+i*0.005,0), lty=0)
}
else if(g == 0)
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(r+i*0.005,0,b+ i*0.005), lty=0)
else
polygon(c(ax-5,ax-5,(bx)-(i-1)/5+5,(bx)-(i-1)/5+5),c(ay-5, by+5,
by+5, ay-5),col= rgb(r+i*0.005,g+i*0.005,b+ i*0.005), lty=0)
i <- i + 1
}
ix<- seq(ax,bx,xcorint)
iy<- seq(ay,by,ycorint)
abline(v=ix, h=iy, col = "lightyellow", lty = "dotted")
if(axbox == TRUE){
box()
axis(1, ix)
axis(2, iy)
}
else{
axis(1, seq(ax-xcorint,bx+xcorint,xcorint),lwd=2, lty='dotted')
axis(2, seq(ay-ycorint,by+ycorint,ycorint),lwd=2, lty='dotted')
}
}
## Example:想要试试 用下面喔
x <-c(-20,20)
y <-c(-30,30)
##(1)红色
background2_1(x , y, r = 0.01, g = 0, b = 0)
windows()
##(2)绿色
background2_1(x , y, r = 0, g = 0.01, b = 0)
windows()
##(3)蓝色
background2_1(x , y, r = 0, g = 0, b = 0.01)
windows()
##(4)黄色 (在b=0)
background2_1(x , y, r = 0.01, g = 0.01, b = 0)
windows()
##(5)紫色 (在g=0)
background2_1(x , y, r = 0.01, g = 0, b = 0.01)
windows()
##(6)灰色 (在r=g=b)
background2_1(x , y, r = 0.01, g = 0.01, b = 0.01)
--
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◆ From: 140.113.191.14
※ 编辑: josephw 来自: 140.113.191.14 (05/18 23:19)
1F：→ josephw:改好了 05/18 23:19