Plotting nodes and values

Question

Nazar Adamchuk 2021-10-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1575818-plotting-nodes-and-values

回答： Walter Roberson 2021-10-31

采纳的回答： Walter Roberson

delta.mat

在 MATLAB Online 中打开

I am plotting the nodes (>150,000) havíng x,y,z-coordinates with help of

scatter3(coor_vs_difference.x_coor,coor_vs_difference.y_coor,coor_vs_difference.z_coor, '.');

receiving:

Now I'd like to add some associated values at each node, for example, the values from the variable "deltaCycLimit". Each of the data point should receive now some color value for the colorbar. The values in the variable "deltaCycLimit" would vary accroding to the following colorbar from -1066670 (darkblue) to 1195724 (yellow):

How I can represent on my scatter3 plot all nodes, colored from the colorbar according to values?

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Answer 1

Walter Roberson 2021-10-31

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1575818-plotting-nodes-and-values#answer_820708

在 MATLAB Online 中打开

The scatter3() syntax is

scatter3(x, y, z, SIZE, COLOR, LINESPEC)

SIZE can be a scalar, or can have one entry for each x value, or can be [] to use default size.

COLOR can be a scalar, or can be a 1 x 3 vector of RGB, or can be a N x 1 vector where N is the number of entries in x, or can be an N x 3 array where N is the number of entries in x.

In your case you would probably use deltaCycLimit or deltaCycLimit(:) for your COLOR information.