bar图高级调整

sam_doggy

% Created by Han yuyang
% version 1.0
% March 8，2018
% Description:
%     Plot precipitation
%     liner regress to show the tendency(not very useful)
% note:
%     If you have any question about this code,
%     please do not hesitate to contact me via E-mail:
%     fadedflowers#foxmail.com
function han_plot(years,prec)
figure;
    handle=bar(years,prec);
    set(gca, 'xlim', [min(years)-1, max(years)+1],'ylim',[600,1800]);
    xlabel('{\itYear/a}', 'fontname', 'Times New Roman', 'fontsize', 20);
    ylabel('{\itAnnual Precipitation/mm}', 'fontname', 'Times New Roman', 'fontsize', 20);
    set(gcf,'outerposition',get(0,'screensize'));

    set(handle,'facecolor',[0,255,255]./255);
    %change the color of the bar to Cyan
    hold on

X=[ones(size(years)), years];
[b, ~, ~, ~, stats]=regress(prec, X);
    b1=sprintf('%.3f', b(1));
    b2=sprintf('%.3f', b(2));
    str1=['{\ity}=', b2, '{\itx}+', b1];
    pval=stats(3);
    pval=sprintf('%.3f', pval);
    str2=['{\itp}=', pval];
    instr={str1, str2};
    instratts.font='Arial';
    instratts.xscale=0.05;
    instratts.yscale=0.95;
    instratts.fontsize=0.015;
    instratts.interval=0.05;
   
% see note in PlotaddText
    PlotaddText(gca, instr, instratts);
    yy=b(1)+b(2)*xlim;
    linehand=plot(xlim, yy, 'k-');
    set(linehand, 'linewidth', 2);
    hold off;
end

% instr is a cell contain the text
    PlotAddText(gca, instr, instratts);
    yy=b(1)+b(2)*xlim;
    linehand=plot(xlim, yy, 'k-');
    set(linehand, 'linewidth', 2);
    hold off;
end

sam_doggy

% Created by Han yuyang
% version 1.0
% March 8，2018
% Description:
%     instr- a cell of text，length is number of line
%     instratts- the attributes of instr,say:position,font
% Note:
%     If you have any question about this code,
%     please do not hesitate to contact me via E-mail:
%     fadedflowers#foxmail.com
% Example:
%     handle=gca;
%     instr={str1, str2};
%     instratts.font='Arial';
%     instratts.xscale=0.05;
%     instratts.yscale=0.95;
%     instratts.fontsize=0.015;
%     instratts.interval=0.05;
function PlotaddText(handle, instr, instratts)
    % Get xlim ylim
    xlim=get(handle, 'xlim');
    ylim=get(handle, 'ylim');
   
    fontsize=instratts.fontsize;
    if fontsize<1
        fontsize=(ylim(2)-ylim(1))*fontsize;
    end
   
    % Loop
    for ii=1:length(instr)
        strVal=instr{ii};
        x=(xlim(2)-xlim(1))*instratts.xscale+xlim(1);
        y=(ylim(2)-ylim(1))*instratts.yscale+ylim(1);
        y=y-(ylim(2)-ylim(1))*instratts.interval*(ii-1);
        text(x, y, strVal, 'fontname', instratts.font, ...
            'fontsize', fontsize);
    end
end

sam_doggy

原代码来自：http://blog.sciencenet.cn/blog-1148346-794768.html
进行了调整和添加注释，使得可读性更好

sam_doggy

https://baike.baidu.com/item/%E5%8D%81%E5%85%AD%E8%BF%9B%E5%88%B6%E9%A2%9C%E8%89%B2%E7%A0%81/10894232?fr=aladdin
十六进制颜色码

sam_doggy

    set(handle,'facecolor',[0,255,255]./255);
    %change the color of the bar to Cyan
    hold on

对应该行代码

sam_doggy

关于注释：我从前不能合理利用tab/shift+tab使得注释很麻烦
matlab 请学会使用ctr+r和ctr+t
都是光标全选然后使用