Attempted to access colors(6); index out of bounds because numel(colors)=5

3 次查看（过去 30 天）

显示更早的评论

Priya 2014-6-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/137372-attempted-to-access-colors-6-index-out-of-bounds-because-numel-colors-5

评论： Star Strider 2014-6-26

采纳的回答： Star Strider

在 MATLAB Online 中打开

Hi, I tried executing this loop,

 colors = ['m';'y';'b';'g';'c']; 
loop_ind = 1; 
for k1 = 1:5 
 figure(4);
 linespec = colors(loop_ind); 
plot(x, y, linespec,  'LineWidth', 1);
loop_ind = loop_ind + 1;
hold on
end 
legend('-0.02','-0.01','0','0.01','0.02')

But I get an error,

 Attempted to access colors(6); index out of bounds because numel(colors)=5. Error in test_contact_ellipse (line 228)
linespec = colors(loop_ind);

Now I'm getting the plot with the correct colors but the legend doesn't appear. How can I rectify this error.

Please give your suggestions.

Thanks

5 个评论
显示 3更早的评论隐藏 3更早的评论

Sara 2014-6-24

Attach x and y, with random data it works fine. Are x and y multidimensional arrays by any chance?

Sara 2014-6-24

You'll need to include all the variables and the files, or I won't be able to run your code

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider 2014-6-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/137372-attempted-to-access-colors-6-index-out-of-bounds-because-numel-colors-5#answer_142261

在 MATLAB Online 中打开

This is an example that plots in different colors with a matching legend:

c = [0 1 0;  1 0 0;  0 0 1;  1 0 1;  0 1 1];
x = linspace(0,2*pi);
figure(4)
hold on
for k1 = 1:size(c,1)
    plot(x, sin(x*k1)+k1, 'Color', c(k1,:))   
end
hold off
grid
legend('Color 1', 'Color 2', 'Color 3', 'Color 4', 'Color 5')

Adapt it as necessary to your application.

9 个评论
显示 7更早的评论隐藏 7更早的评论

Priya 2014-6-26

Thanks again. It worked.

Star Strider 2014-6-26

Again, my pleasure!

请先登录，再进行评论。

更多回答（1 个）

Sara 2014-6-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/137372-attempted-to-access-colors-6-index-out-of-bounds-because-numel-colors-5#answer_142265

在 MATLAB Online 中打开

In the last loop, replace with the following and see if it is what you are looking for:

          figure(4);
          plot(x, y, 'LineWidth', 1,'color',colors(k2))
          axis square;
          axis equal;
          grid on;
          xlabel('Longitudinal');ylabel('Lateral');title('Contact ellipse shape');
          hold on
          myh = line([xCenter, xCenter], [yCenter - yRadius(k2), yCenter + yRadius(k2)], ...
              'LineWidth', 1, 'Color', [1,0,0]);
          set(get(get(myh,'Annotation'),'LegendInformation'),'IconDisplayStyle','off');
          myh = line([xCenter - xRadius(k2), xCenter + xRadius(k2)], [yCenter, yCenter], ...
              'LineWidth', 1, 'Color', [1,0,0]);
          set(get(get(myh,'Annotation'),'LegendInformation'),'IconDisplayStyle','off');

It seems that some of your ellipses are overwritten with others. Since I don't know what you are doing, this is the best I can recommend. I'd replace also:

for k2 = 1:size(a,2)