How can the Self Organizing Map function plotsomplanes be used to create different color schemes and custom labels?

Question

evanma 2017-8-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/353337-how-can-the-self-organizing-map-function-plotsomplanes-be-used-to-create-different-color-schemes-and

编辑： Daniel Perez Rapela 2018-10-31

What I mean is, when using the function plotsomplanes(net) to create the plots of SOM weights, the function makes a plot and using a color range of yellow to white to orange to dark brown to black; the designated colormap in the figure editor is "hot". I was wondering how to plot the map weights so that the maps are of a different color scheme, say autumn or summer, and how to do it directly from the command line (or in the matlab code that the line plotsomplanes would be located in).

In addition, the function plotsomplanes gives labels Input Weight 1, Input Weight 2 and so on for each map label. Is there a way, directly from the command line, to create a map of weights using plotsomplanes so that each map is automatically given a custom label once the map is plotted?

Thank you for any help you may have.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Daniel Perez Rapela 2018-10-28

在 MATLAB Online 中打开

The only way I made this work is by modifying the plotsomplanes function itself. If you go to the bottom of it you can see where the color are defined. I modified this section slightly to:

     %     %%%%%HOT colormap
    %%%%%level = (level-mn(i))/rng(i);
      %%%%%red = min(1,level*2);
      %%%%%green = max(0,level*2-1);
      %%%%%blue = 0;
      %%%%%c = [red green blue];
      %%%%%set(plotData.patches{i}(j),'FaceColor',c);
    %
    %
    % JET colormap
    level = (level-mn(i))/rng(i);
    c = jet(64);
    c = c(max(1,ceil(64*level)),:);
    set(plotData.patches{i}(j),'FaceColor',c);