制作时间序列的3D渲染图 [英] Make a 3D rendered plot of time-series

问题描述

我有一组3D坐标（下面-仅用于3D空间中的单个点）：

I have a set of 3D coordinates (below - just for a single point, in 3D space):

x <- c(-521.531433, -521.511658, -521.515259, -521.518127, -521.563416, -521.558044, -521.571228, -521.607178, -521.631165, -521.659973)
y <- c(154.499557, 154.479568, 154.438705, 154.398682, 154.580688, 154.365189, 154.3564, 154.559189, 154.341309, 154.344223)
z <- c(864.379272, 864.354675, 864.365479, 864.363831, 864.495667, 864.35498, 864.358582, 864.50415, 864.35553, 864.359863)
xyz <- data.frame(x,y,z)

我需要对此进行时间序列图绘制点具有3D渲染（这样我就可以旋转绘图等）。该图将在时间上可视化该点的轨迹（例如，以实线的形式）。我将'rgl'包与 plot3d 方法，但我无法它可以绘制时间序列（下面，只需绘制时间序列中第一帧的单个点）：

I need to make a time-series plot of this point with a 3D rendering (so I can rotate the plot, etc.). The plot will visualize a trajectory of the point above in time (for example in the form of solid line). I used 'rgl' package with plot3d method, but I can't make it to plot time-series (below, just plot a single point from first frame in time-series):

require(rgl)    
plot3d(xyz[1,1],xyz[1,2],xyz[1,3],axes=F,xlab="",ylab="",zlab="") 

我发现这篇文章，但实际上并没有处理实时渲染的3D图。我将不胜感激任何建议。谢谢。

I found this post, but it doesn't really deal with a real-time rendered 3D plots. I would appreciate any suggestions. Thank you.

推荐答案

解决方案比我想象的简单，问题是我没有使用 as.matrix 在我的数据上。当我只是尝试使用 plot3d （list）对象不能被强制键入'double' c $ c>（为此此处）。因此，如果您需要绘制一组坐标的时间序列（在我的情况下是两个演员的运动捕捉数据），这是我的完整解决方案（仅适用于以下数据集！）：

The solution was simpler than I thought and the problem was that I didn't use as.matrix on my data. I was getting error (list) object cannot be coerced to type 'double' when I was simply trying to plot my entire dataset using plot3d (found a solution for this here). So, if you need to plot time-series of set of coordinates (in my case motion capture data of two actors) here is my complete solution (only works with the data set below!):

• 下载示例数据集



• 将上述数据读入表中：

• download example data set

• read the above data into a table:

data <- read.table("Bob12.txt",sep="\t")

提取XYZ坐标成单独的矩阵：

extract XYZ coordinates into a separate matrixes:

x <- as.matrix(subset(data,select=seq(1,88,3)))
y <- as.matrix(subset(data,select=seq(2,89,3)))
z <- as.matrix(subset(data,select=seq(3,90,3)))

将坐标绘制在漂亮的3D渲染图上使用'rgl'包：

require(rgl)
plot3d(x[1:nrow(x),],y[1:nrow(y),],z[1:nrow(z),],axes=F,xlab="",ylab="",zlab="")

您应该在下面的图片中看到类似的东西（但可以旋转它，等等）-希望您能认识到那里有人们的联合中心。我仍然需要对其进行调整，以使其在视觉上更好-将第一个框架作为一个点（以清楚地看到演员的关节），然后将其可视化，然后将其余的框架作为线条。

You should get something like on the image below (but you can rotate it etc.) - hope you can recognise there are joint centers for people there. I still need to tweak it to make it visually better - to have first frame as a points (to clearly see actor's joints), then a visible break, and then the rest of frames as a lines.

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