GNUPLOT：点集的二维直方图

发布于 2024-08-27 14:42:01 字数 671 浏览 8 评论 0原文

我有一对带有权重的点：

#x  y  w
0.111342 0.478917 0.232487 
0.398107 1.79559 0.221714 
0.200731 2.58651 0.0776068 
0.0967412 1.49904 0.0645355 
6.17638 8.63101 0.715604 
0.306128 3.10917 0.0984595 
0.340707 3.19344 0.10669 
7.18627 8.59859 0.835751 
8.56 9.63894 0.888065 
5.14272 6.86074 0.749587 
0.747202 3.812 0.196013 
8.71891 10.1355 0.860232 
0.346714 1.45895 0.237647 
5.21932 8.84491 0.590094 
9.42138 12.2082 0.771725 
0.215627 2.42317 0.0889856

如何用颜色条绘制漂亮的二维直方图图像？我发现了很好的密度图描述，但我不想通过Python。我有办法只使用 gnuplot 脚本吗？

原文

I have a pairs of the points with their weights:

#x  y  w
0.111342 0.478917 0.232487 
0.398107 1.79559 0.221714 
0.200731 2.58651 0.0776068 
0.0967412 1.49904 0.0645355 
6.17638 8.63101 0.715604 
0.306128 3.10917 0.0984595 
0.340707 3.19344 0.10669 
7.18627 8.59859 0.835751 
8.56 9.63894 0.888065 
5.14272 6.86074 0.749587 
0.747202 3.812 0.196013 
8.71891 10.1355 0.860232 
0.346714 1.45895 0.237647 
5.21932 8.84491 0.590094 
9.42138 12.2082 0.771725 
0.215627 2.42317 0.0889856

How to plot nice 2d histogram image with color bar?
I found nice density map description but I don't wont to go via python.
I there way to use only gnuplot scripting?

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如日中天 2024-09-03 14:42:02

最好使用外部直方图工具，但您可以通过以下方式在 gnuplot 中实现类似的功能：

set pm3d at b      # draw on bottom, not as 3d surface
set view map       # don't do a 3-d looking plot
set dgrid 100,100  # grid of 100x100 pixels
splot 'dat.txt' w pm3d

It's best to use an external histogramming tool, but you can achieve something similar in gnuplot via:

set pm3d at b      # draw on bottom, not as 3d surface
set view map       # don't do a 3-d looking plot
set dgrid 100,100  # grid of 100x100 pixels
splot 'dat.txt' w pm3d

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