persp(x = seq(0, 1, length.out = nrow(z)), y = seq(0, 1, length.out = ncol(z)), z, xlim = range(x), ylim = range(y), zlim = range(z, na.rm = TRUE), xlab = NULL, ylab = NULL, zlab = NULL, main = NULL, sub = NULL, theta = 30, phi = 30, r = sqrt(3), d = 1, scale = TRUE, expand = 1, col = "white", border = NULL, ltheta = -135, lphi = 0, shade = NA, box = TRUE, axes = TRUE, nticks = 5, ticktype = "simple") 这串代码画出来的图左侧会多出几根线是怎么回事
时间: 2023-11-15 07:06:26 浏览: 34
这个现象可能是因为 `persp` 函数的 `border` 参数默认为 `NA`,即没有边框。如果想要去除这些额外的线条可以将 `border` 参数设置为空字符串即可。以下是修改代码后的示例:
```r
persp(x = seq(0, 1, length.out = nrow(z)),
y = seq(0, 1, length.out = ncol(z)),
z, xlim = range(x), ylim = range(y),
zlim = range(z, na.rm = TRUE),
xlab = NULL, ylab = NULL, zlab = NULL,
main = NULL, sub = NULL,
theta = 30, phi = 30, r = sqrt(3), d = 1,
scale = TRUE, expand = 1,
col = "white", border = "", ltheta = -135, lphi = 0,
shade = NA, box = TRUE, axes = TRUE, nticks = 5,
ticktype = "simple")
```
在这个示例中,将 `border` 参数设置为空字符串即可解决左侧多出线条的问题。
相关问题
出现了Error in persp.default(x = seq(0, 1, length.out = nrow(z)), y = seq(0, : invalid color name ''
这个错误是因为在 `persp()` 函数中的 `col` 参数的值被设置为空字符串,即 `col = ""`,而空字符串不是有效的颜色名称。如果您想将颜色设置为白色,则应该使用 `col = "white"`。将 `col` 参数修改为有效的颜色名称即可解决这个错误。以下是修改后的示例代码:
```r
persp(x = seq(0, 1, length.out = nrow(z)),
y = seq(0, 1, length.out = ncol(z)),
z, xlim = range(x), ylim = range(y),
zlim = range(z, na.rm = TRUE),
xlab = NULL, ylab = NULL, zlab = NULL,
main = NULL, sub = NULL,
theta = 30, phi = 30, r = sqrt(3), d = 1,
scale = TRUE, expand = 1,
col = "white", border = NA, ltheta = -135, lphi = 0,
shade = NA, box = TRUE, axes = TRUE, nticks = 5,
ticktype = "simple")
```
在这个示例中,将 `col` 参数设置为 `"white"`,并将 `border` 参数设置为 `NA`,这样就可以避免了这个错误。
Warning message: In persp.default(x = seq(0, 1, length.out = nrow(z)), y = seq(0, : surface extends beyond the box这个怎么处理
这个警告信息是因为在 `persp()` 函数中的 `z` 值范围超出了默认的绘图框(bounding box),也就是 `xlim`、`ylim` 和 `zlim` 所指定的范围。如果您不想看到这个警告信息,可以将 `expand` 参数设置为一个小于1的值,这样可以将绘图框缩小一些,以适应数据。例如,将 `expand` 参数设置为 `0.8` 可以解决这个问题。以下是修改后的示例代码:
```r
persp(x = seq(0, 1, length.out = nrow(z)),
y = seq(0, 1, length.out = ncol(z)),
z, xlim = range(x), ylim = range(y),
zlim = range(z, na.rm = TRUE),
xlab = NULL, ylab = NULL, zlab = NULL,
main = NULL, sub = NULL,
theta = 30, phi = 30, r = sqrt(3), d = 1,
scale = TRUE, expand = 0.8,
col = "white", border = NA, ltheta = -135, lphi = 0,
shade = NA, box = TRUE, axes = TRUE, nticks = 5,
ticktype = "simple")
```
在这个示例中,将 `expand` 参数设置为 `0.8`,这样可以将绘图框缩小一些,以适应数据。这样就不会再出现警告信息了。