Question

我尝试使用export_fig matlab工具以矢量格式（pdf或eps）导出matlab数字。

尝试这样做时，我得到＆＃34;警告：在Painter＆＃34;模式中不支持RGB颜色数据。并且没有显示任何有色部分。

作者已使用

在README.md（包中）中解决了这个问题

**RGB color data not yet supported in Painter's mode** - you will see this as a warning if you try to export a figure which contains patch objects whose face or vertex colors are specified as a an RGB colour, rather than an index into the colormap, using the painters renderer (the default renderer for vector output). This problem can arise if you use `pcolor`, for example. This is a problem with MATLAB's painters renderer, which also affects `print`; there is currently no fix available in export_fig (other than to export to bitmap). The suggested workaround is to avoid colouring patches using RGB. First, try to use colours in the figure's colourmap (instructions [here](http://www.mathworks.co.uk/support/solutions/en/data/1-6OTPQE/)) - change the colourmap, if necessary. If you are using `pcolor`, try using [uimagesc](http://www.mathworks.com/matlabcentral/fileexchange/11368) (on the file exchange) instead.

在http://www.mathworks.co.uk/support/solutions/en/data/1-6OTPQE/我们已经接受了解决方案

s = surf(peaks(50), 'CData', cat(3, 0.8*ones(50), ones(50), 0.65*ones(50)));
rgb_colors = get(s, 'CData');
[i, map] = rgb2ind(rgb_colors, 64);
set(s, 'CData', double(i));
colormap(map);

现在我有一个有一些轮廓线的图形，问题可能是我访问它们的句柄的方式，因为尝试这个：

>> h = findobj(gca, 'Type', 'Line')

h =

   Empty matrix: 0-by-1

即。没有找到行。所以我现在正在使用它：

>> h = get(gca, 'children')

然后，为了转换颜色，我将使用论坛帖子中的后续行，这会产生错误：

>> [i, map] = rgb2ind(rgb_colors, 64)
Error using cq
First input must be a uint8 array.

Error in rgb2ind (line 89)
        [map,X] = cq(RGB,m);

我还会输出rgb_colors的内容：

>> rgb_colors
rgb_colors = 

    [2x451x3   double]
    [2x480x3   double]
    [2x359x3   double]
    [2x311x3   double]
    [2x279x3   double]
    [2x263x3   double]
    [2x259x3   double]
    [2x253x3   double]
    [2x261x3   double]
    [2x269x3   double]
    [2x260x3   double]
    [2x261x3   double]
    [2x261x3   double]
    [2x259x3   double]
    [2x263x3   double]
    [2x259x3   double]
    [2x259x3   double]
    [2x253x3   double]
    [2x255x3   double]
    [2x255x3   double]
    [2x255x3   double]
    [3x34577x3 double]
    []

我很抱歉，如果这是非常基本的，我在matlab上没有多少经验。

Matlab：尝试修复“Painter模式尚未支持的RGB颜色数据”警告

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