如何把一个图片放在plot的图片上

wgwhl

第一次在这个论坛问问题就得到了您的大力帮助，我是matlab新手，以下是我画这个图的函数，其中有些内容可能与没有贴出的部分有关，但是整个思路应该在这个函数中体现出来了，可能有很多不合理的地方，或者有些地方可以用更简单的方法实现，还请各位继续指教，谢谢！

1. %% 绘制有因次曲线图 --- Executes on button press in pushbutton3.
   
2. function pushbutton3_Callback(hObject, eventdata, handles)
   
3. % hObject handle to pushbutton3 (see GCBO)
   
4. % eventdata reserved - to be defined in a future version of MATLAB
   
5. % handles structure with handles and user data (see GUIDATA)
   
6. format long g
   
7. 
   
8. if (isnan(handles.current_data) == 1)
   
9. errordlg('没有计算数据，不能绘制图像', '错误');
   
10. return ;
    
11. end
    
12. %% 读取数据
    
13. shy_id = handles.shy_id;
    
14. colname = handles.current_cols;
    
15. data = handles.current_data;
    
16. len = length(colname);
    
17. for index = 1 : len
    
18. if (strcmp(colname(index), 'qVsg1Gu') == 1)
    
19. qVsg1 = data(: , index);
    
20. end
    
21. if (strcmp(colname(index), 'psfGu') == 1)
    
22. psf = data(: , index);
    
23. end
    
24. if (strcmp(colname(index), 'pfGu') == 1)
    
25. pf = data(: , index);
    
26. end
    
27. if (strcmp(colname(index), 'PrGu') == 1)
    
28. Pr = data(: , index);
    
29. end
    
30. if (strcmp(colname(index), 'eta_srGu') == 1)
    
31. eta_sr = data(: , index);
    
32. end
    
33. if (strcmp(colname(index), 'eta_rGu') == 1)
    
34. eta_r = data(: , index);
    
35. end
    
36. if (strcmp(colname(index), 'LAGu') == 1)
    
37. LA = data(: , index);
    
38. end
    
39. if (strcmp(colname(index), 'rho_sg1Gu') == 1)
    
40. rho_sg1Gu = data(: , index);
    
41. end
    
42. if (strcmp(colname(index), 'nGu') == 1)
    
43. nGu = data(: , index);
    
44. end
    
45. end
    
46. %% 画原始点图
    
47. x = qVsg1'; % qVsg1
    
48. f1x_y1 = [psf, pf]'; % psf, pf
    
49. f1x_y2 = Pr';
    
50. f1x_y2 = f1x_y2 ./ 1000;
    
51. f2x_y1 = [eta_sr, eta_r]'; % eta_sr, eta_r
    
52. f2x_y1 = f2x_y1 .* 100;
    
53. f2x_y2 = LA';
    
54. % 拟合曲线
    
55. FX11 = polyfit(x, f1x_y1(1, :), 4);
    
56. FX12 = polyfit(x, f1x_y1(2, :), 4);
    
57. % 根据拟合曲线多项式取2000个点的值用于画曲线图
    
58. X = linspace(min(x), max(x), 2000);
    
59. fx_y11 = polyval(FX11, X);
    
60. fx_y12 = polyval(FX12, X);
    
61. fx_y1 = [fx_y11; fx_y12];
    
62. 
    
63. FX21 = polyfit(x, f1x_y2, 4);
    
64. fx_y2 = polyval(FX21, X);
    
65. 
    
66. scrsz = get(0, 'ScreenSize');
    
67. % 注意figure与其上的各个axis都通过像素点的方式表示位置与大小，这样便于控制各个对象的相对位置
    
68. % figures2 是用GUIDE预先做的一个模板，上面有axes1、axes2、axes3；
    
69. % 其中axes1用来画图的下部分，并且根据axes1的尺寸画出图形的上部分；
    
70. % axes2用来放图片，执行的时候自动调整为图片尺寸；
    
71. % axes3用来标注试验条件，运行的时候也调整为axes2一样的高度
    
72. hfig = figures2('Position', [scrsz(3)/6, scrsz(4)/12, scrsz(3)*2/3, scrsz(4)*5/6]);
    
73. 
    
74. % psf, pf
    
75. [AX1, H11, H12] = plotyy(x, f1x_y1, x, f1x_y2);
    
76. xlabel('q_{Vsg1}(m^3/s)');
    
77. set(H11, 'LineStyle', '.');
    
78. set(H12, 'LineStyle', '.');
    
79. set(H11, 'Marker', '.');
    
80. set(H12, 'Marker', '.');
    
81. 
    
82. hold('all');
    
83. 
    
84. %[AX2, H21, H22] = plotyy(X, fx_y1, X, fx_y2);
    
85. hlines21 = line(X, fx_y1, 'Parent', AX1(1));
    
86. hlines22 = line(X, fx_y2, 'Parent', AX1(2));
    
87. 
    
88. axes(AX1(1));
    
89. text('String', 'p_{sf}', 'Position', [X(800), fx_y11(800)], 'HorizontalAlignment', 'right', 'fontsize', 12, 'Color', get(hlines21(1), 'Color'), 'BackgroundColor', get(AX1(1), 'Color'));
    
90. text('String', 'p_f', 'Position', [X(1000), fx_y12(1000)], 'HorizontalAlignment', 'right', 'fontsize', 12, 'Color', get(hlines21(2), 'Color'), 'BackgroundColor', get(AX1(1), 'Color'));
    
91. axes(AX1(2));
    
92. text('String', 'P_r', 'Position', [X(1200),fx_y2(1200)], 'HorizontalAlignment', 'right', 'fontsize', 12, 'Color', get(hlines22, 'Color'), 'BackgroundColor', get(AX1(1), 'Color'));
    
93. 
    
94. grid on
    
95. % 调整Y轴的YTickLabel信息
    
96. YT = get(AX1(1), 'YTick');
    
97. YT = linspace(min(YT), max(YT), 11);
    
98. YTB = num2cell(YT);
    
99. YTB{length(YTB)} = 'p(Pa)';
    
100. set(AX1(1), 'YTick', YT);
     
101. set(AX1(1), 'YTickLabel', YTB);
     
102. 
     
103. YT = get(AX1(2), 'YTick');
     
104. YT = linspace(min(YT), max(YT), 11);
     
105. YTB = num2cell(YT);
     
106. YTB{length(YTB)} = 'Pr(KW)';
     
107. set(AX1(2), 'YTick', YT);
     
108. set(AX1(2), 'YTickLabel', YTB);
     
109. 
     
110. set(AX1, 'XMinorTick', 'on', 'YMinorTick', 'on', 'Box', 'off', 'YColor', 'k');
     
111. 
     
112. % eta_sr, eta_r
     
113. cfig = get(gcf, 'color');
     
114. pos = get(AX1, 'position');
     
115. pos = [pos{1}(1) pos{1}(2) pos{1}(3) pos{1}(4)/2];
     
116. % 将已画的axes调整为原来的一半，再在其上方位置创建一个新的axes画出另外的数据
     
117. set(AX1, 'position', pos);
     
118. 
     
119. pos2 = [pos(1) pos(2) + pos(4) pos(3) pos(4)];
     
120. % 注意figure与其上的各个axis都通过像素点的方式表示大小，这样便于控制各个对象的相对位置 'Units', 'pixels'
     
121. AX2 = axes('Units', 'pixels', 'Box', 'off', 'Parent', hfig, 'Position', pos2);
     
122. axes(AX2);
     
123. %set(AX2, 'XAxisLocation', 'top', 'XMinorTick', 'on', 'YMinorTick', 'on', 'Box', 'off', 'YColor', 'k', 'XTickLabel', {});
     
124. 
     
125. FX11 = polyfit(x, f2x_y1(1, :), 4);
     
126. FX12 = polyfit(x, f2x_y1(2, :), 4);
     
127. X = linspace(min(x), max(x), 2000);
     
128. fx_y11 = polyval(FX11, X);
     
129. fx_y12 = polyval(FX12, X);
     
130. fx_y1 = [fx_y11; fx_y12];
     
131. 
     
132. FX21 = polyfit(x, f2x_y2, 4);
     
133. fx_y2 = polyval(FX21, X);
     
134. % 因为发现经过拟合后，Y的的数据最大值超过了原值，
     
135. % 如果先用原值plotyy的话，Y轴能表示的最大值不够，导致出错，
     
136. % 所以先判断原值与拟合值那个中有最大值，就先用那个plotyy，
     
137. % 这样后画的那个就不会因为值超出Y轴的表示范围而出错
     
138. if (max(f2x_y2) > max(fx_y2))
     
139. [AX1, H11, H12] = plotyy(x, f2x_y1, x, f2x_y2); % eta_sr, eta_r
     
140. set(H11, 'LineStyle', '.');
     
141. set(H12, 'LineStyle', '.');
     
142. set(H11, 'Marker', '.');
     
143. set(H12, 'Marker', '.');
     
144. hold('all');
     
145. hlines21 = line(X, fx_y1, 'Parent', AX1(1));
     
146. hlines22 = line(X, fx_y2, 'Parent', AX1(2));
     
147. else
     
148. [AX1, H11, H12] = plotyy(X, fx_y1, X, fx_y2); % eta_sr, eta_r
     
149. hold('all');
     
150. hlines21 = line(x, f2x_y1, 'Parent', AX1(1));
     
151. hlines22 = line(x, f2x_y2, 'Parent', AX1(2));
     
152. set(hlines21, 'LineStyle', '.');
     
153. set(hlines22, 'LineStyle', '.');
     
154. set(hlines21, 'Marker', '.');
     
155. set(hlines22, 'Marker', '.');
     
156. end
     
157. 
     
158. axes(AX1(1));
     
159. text('String', '\eta_{sr}', 'Position', [X(800), fx_y11(800)], 'HorizontalAlignment', 'right', 'fontsize', 12, 'Color', get(hlines21(1), 'Color'), 'BackgroundColor', get(AX1(1), 'Color'));
     
160. text('String', '\eta_r', 'Position', [X(1000), fx_y12(1000)], 'HorizontalAlignment', 'right', 'fontsize', 12, 'Color', get(hlines21(2), 'Color'), 'BackgroundColor', get(AX1(1), 'Color'));
     
161. axes(AX1(2));
     
162. text('String', 'L_A', 'Position', [X(1200), fx_y2(1200)], 'HorizontalAlignment', 'right', 'fontsize', 12, 'Color', get(hlines22, 'Color'), 'BackgroundColor', get(AX1(1), 'Color'));
     
163. 
     
164. grid on
     
165. % 调整Y轴的YTickLabel信息
     
166. YT = get(AX1(1), 'YTick');
     
167. YT = linspace(min(YT), max(YT), 11);
     
168. YTB = num2cell(YT);
     
169. YTB{1} = 'p(Pa)';
     
170. YTB{length(YTB)} = 'ηsr,ηr(％)';
     
171. set(AX1(1), 'YTick', YT);
     
172. set(AX1(1), 'YTickLabel', YTB);
     
173. 
     
174. YT = get(AX1(2), 'YTick');
     
175. YT = linspace(min(YT), max(YT), 11);
     
176. YTB = num2cell(YT);
     
177. YTB{1} = 'Pr(KW)';
     
178. YTB{length(YTB)} = 'LA(dB)';
     
179. set(AX1(2), 'YTick', YT);
     
180. set(AX1(2), 'YTickLabel', YTB);
     
181. 
     
182. set(AX1, 'XAxisLocation', 'top', 'XMinorTick', 'off', 'YMinorTick', 'on', 'Box', 'off', 'YColor', 'k', 'XTickLabel', {});
     
183. title('有因次曲线图', 'fontsize', 16);
     
184. 
     
185. imf = imfinfo ('A.bmp'); % 读取图片信息
     
186. hchildren = get(hfig, 'Children');
     
187. for index = 1: length(hchildren)
     
188. if (strcmp(get(hchildren(index), 'Tag'), 'axes2') == 1) % 将图片放在 axes2 上
     
189. X = imread('A.bmp');
     
190. axes(hchildren(index));
     
191. image(X);
     
192. cm = imf.Colormap;
     
193. colormap(cm);
     
194. pos = get(hchildren(index), 'Position');
     
195. pos = [pos(1), pos(2), imf.Width, imf.Height]; % 注意figure与其上的各个axis都通过像素点的方式表示大小，这样便于控制各个对象的相对位置
     
196. set(hchildren(index), 'Position', pos);
     
197. %set(hchildren(index), 'XMinorTick', 'off', 'YMinorTick', 'off', 'Box', 'on', 'XTickLabel', {}, 'YTickLabel', {});
     
198. set(hchildren(index), 'Box', 'on', 'XTick', [], 'YTick', []);
     
199. end
     
200. if (strcmp(get(hchildren(index), 'Tag'), 'axes3') == 1) % 将试验条件放在 axes3 上
     
201. axes(hchildren(index));
     
202. pos = get(hchildren(index), 'Position');
     
203. pos = [pos(1), pos(2), pos(3), imf.Height]; % 设置与图片高度一样,这样与axes2的高度也就一样了，两边高度一致
     
204. set(hchildren(index), 'Position', pos);
     
205. text(0.15, 0.6, ['n = ', num2str(nGu(1)), ' r/min']);
     
206. text(0.15, 0.3, ['\rho = ', num2str(rho_sg1Gu(1)), ' kg/m^3']);
     
207. %set(hchildren(index), 'XMinorTick', 'off', 'YMinorTick', 'off', 'Box', 'on', 'XTickLabel', {}, 'YTickLabel', {});
     
208. set(hchildren(index), 'Box', 'on', 'XTick', [], 'YTick', []);
     
209. end
     
210. end
     
211. pic_filename = strcat(shy_id, '有因次曲线图.emf');
     
212. saveas(hfig, pic_filename, 'emf');
     
213. 
     
214. hold off;

复制代码

ChaChing

...我是matlab新手...

先鼓励下, 现没时间细看, 晚上再来学习!

个人以为应不只!:@P
若是新学, LZ编程水平基础不低喔

[ 本帖最后由 ChaChing 于 2010-8-4 08:09 编辑 ]

wgwhl

说实在的，也就7月份开始项目以来学习matlab的，呵呵，属于现学现卖的那种