Add hatch to bar plot

  1 function applyhatch(h,patterns,colorlist)
  2 %APPLYHATCH Apply hatched patterns to a figure
  3 %  APPLYHATCH(H,PATTERNS) creates a new figure from the figure H by
  4 %  replacing distinct colors in H with the black and white
  5 %  patterns in PATTERNS. The format for PATTERNS can be
  6 %    a string of the characters ‘/‘, ‘\‘, ‘|‘, ‘-‘, ‘+‘, ‘x‘, ‘.‘
  7 %    a cell array of matrices of zeros (white) and ones (black)
  8 %
  9 %  APPLYHATCH(H,PATTERNS,COLORS) maps the colors in the n by 3
 10 %  matrix COLORS to PATTERNS. Each row of COLORS specifies an RGB
 11 %  color value.
 12 %
 13 %  Note this function makes a bitmap image of H and so is limited
 14 %  to low-resolution, bitmap output.
 15 %
 16 %  Example 1:
 17 %    bar(rand(3,4));
 18 %    applyhatch(gcf,‘\-x.‘);
 19 %
 20 %  Example 2:
 21 %    colormap(cool(6));
 22 %    pie(rand(6,1));
 23 %    legend(‘Jan‘,‘Feb‘,‘Mar‘,‘Apr‘,‘May‘,‘Jun‘);
 24 %    applyhatch(gcf,‘|-+.\/‘,cool(6));
 25 %
 26 %  See also: MAKEHATCH
 27 %  By Ben Hinkle, [email protected]
 28 %  This code is in the public domain.
 29
 30 oldppmode = get(h,‘paperpositionmode‘);
 31 oldunits = get(h,‘units‘);
 32 set(h,‘paperpositionmode‘,‘auto‘);
 33 set(h,‘units‘,‘pixels‘);
 34 figsize = get(h,‘position‘);
 35 if nargin == 2
 36   colorlist = [];
 37 end
 38 bits = hardcopy(h,‘-dzbuffer‘,‘-r0‘);
 39 set(h,‘paperpositionmode‘,oldppmode);
 40 bwidth = size(bits,2);
 41 bheight = size(bits,1);
 42 bsize = bwidth * bheight;
 43 if ~isempty(colorlist)
 44   colorlist = uint8(255*colorlist);
 45   [colors,colori] = nextnonbw(0,colorlist,bits);
 46 else
 47   colors = (bits(:,:,1) ~= bits(:,:,2)) | ...
 48            (bits(:,:,1) ~= bits(:,:,3));
 49 end
 50 pati = 1;
 51 colorind = find(colors);
 52 while ~isempty(colorind)
 53   colorval(1) = bits(colorind(1));
 54   colorval(2) = bits(colorind(1)+bsize);
 55   colorval(3) = bits(colorind(1)+2*bsize);
 56   if iscell(patterns)
 57     pattern = patterns{pati};
 58   elseif isa(patterns,‘char‘)
 59     pattern = makehatch(patterns(pati));
 60   else
 61     pattern = patterns;
 62   end
 63   pattern = uint8(255*(1-pattern));
 64   pheight = size(pattern,2);
 65   pwidth = size(pattern,1);
 66   ratioh = ceil(bheight/pheight);
 67   ratiow = ceil(bwidth/pwidth);
 68   bigpattern = repmat(pattern,[ratioh ratiow]);
 69   if ratioh*pheight > bheight
 70     bigpattern(bheight+1:end,:) = [];
 71   end
 72   if ratiow*pwidth > bwidth
 73     bigpattern(:,bwidth+1:end) = [];
 74   end
 75   bigpattern = repmat(bigpattern,[1 1 3]);
 76   color = (bits(:,:,1) == colorval(1)) & ...
 77           (bits(:,:,2) == colorval(2)) & ...
 78           (bits(:,:,3) == colorval(3));
 79   color = repmat(color,[1 1 3]);
 80   bits(color) = bigpattern(color);
 81   if ~isempty(colorlist)
 82     [colors,colori] = nextnonbw(colori,colorlist,bits);
 83   else
 84     colors = (bits(:,:,1) ~= bits(:,:,2)) | ...
 85              (bits(:,:,1) ~= bits(:,:,3));
 86   end
 87   colorind = find(colors);
 88   pati = (pati + 1);
 89   if pati > length(patterns)
 90     pati = 1;
 91   end
 92 end
 93 newfig = figure(‘units‘,‘pixels‘,‘visible‘,‘off‘);
 94 imaxes = axes(‘parent‘,newfig,‘units‘,‘pixels‘);
 95 im = image(bits,‘parent‘,imaxes);
 96 fpos = get(newfig,‘position‘);
 97 set(newfig,‘position‘,[fpos(1:2) figsize(3) figsize(4)+1]);
 98 set(imaxes,‘position‘,[0 0 figsize(3) figsize(4)+1],‘visible‘,‘off‘);
 99 set(newfig,‘visible‘,‘on‘);
100 function [colors,out] = nextnonbw(ind,colorlist,bits)
101 out = ind+1;
102 colors = [];
103 while out <= size(colorlist,1)
104   if isequal(colorlist(out,:),[255 255 255]) | ...
105         isequal(colorlist(out,:),[0 0 0])
106     out = out+1;
107   else
108     colors = (colorlist(out,1) == bits(:,:,1)) & ...
109              (colorlist(out,2) == bits(:,:,2)) & ...
110              (colorlist(out,3) == bits(:,:,3));
111     return
112   end
113 end
114 %而applyhatch函数需要调用下面的函数
115 function A = makehatch(hatch)
116 %MAKEHATCH Predefined hatch patterns
117 %  MAKEHATCH(HATCH) returns a matrix with the hatch pattern for HATCH
118 %   according to the following table:
119 %      HATCH        pattern
120 %     -------      ---------
121 %        /          right-slanted lines
122 %        \          left-slanted lines
123 %        |          vertical lines
124 %        -          horizontal lines
125 %        +          crossing vertical and horizontal lines
126 %        x          criss-crossing lines
127 %        .          single dots
128 %
129 %  See also: APPLYHATCH
130 %  By Ben Hinkle, [email protected]
131 %  This code is in the public domain.
132 n = 6;
133 A=zeros(n);
134 switch (hatch)
135 case ‘/‘
136   A = fliplr(eye(n));
137 case ‘\‘
138   A = eye(n);
139 case ‘|‘
140   A(:,1) = 1;
141 case ‘-‘
142   A(1,:) = 1;
143 case ‘+‘
144   A(:,1) = 1;
145   A(1,:) = 1;
146 case ‘x‘
147   A = eye(n) | fliplr(diag(ones(n-1,1),-1));
148 case ‘.‘
149   A(1:2,1:2)=1;
150 otherwise
151   error([‘Undefined hatch pattern "‘ hatch ‘".‘]);
152 end
153
154
155 %测试的例子命令
156 %  data = [96.3,92.6,71.2;95.7,93.6,83.9;96.8,94.3,78.3;95.8,92.7,80.3]
157 %  bar(data,1)
158 %  axis([0 6 0.0 100])
159 %  legend(‘方法‘,‘exited‘,‘Square‘)
160 %  set(gca,‘XTickLabel‘,{‘Img1‘,‘Img2‘,‘Img3‘,‘Img4‘})
161 %  applyhatch(gcf,‘\.x.‘)

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