GUI读取txt文件并绘图讲义

1、GUI读取txt文件并画图问题描述：读取 TXT文件里的数，把第一列设为横坐标，第二列设为纵坐标，在 GUI 界面读取并实现绘图功能。其中txt文件格式如下D -记事本文件编辐口 格式3直看强帮助0. 0000000. 0005000. 0010000. 0015000. 0020000. 0025000. 0030000. 0035000. 0040000. 005000. 0050000. 0055000. 0050000. 0055000. 0070000. 0075000. 0080000. 0085000. 0090000. 0095000. 010000Q 0105000. 011

2、0000. 0115000. 0120000. 0125000. 0130000. 0135000, 014000Il A；好们0. 0150000. 0155000. 0160000. 0165000. 0170000. 0175000. 0130000. 0185000. 0190000. 0195000. 0200000. 0205000. 0210000. 02150027, 694027 2工1083392S. 23016728.17425728,17987323.01200527. 53445527. 537041 27.5719EE 2L 6617922S. 06927728.

3、214542 28,167177 28.18122628. 02191227, 63860527.54680627.60442527.67278528.07733323.26556828,213078 2工15693328. 004333 27.64373227.53W99427. 58904527. 66546123.07562423. 27582228. 24164228.158876 2L 987732 2L 653986 27. 52898427.551201 27.6245042S. 08636728. 2非76g28. 220158 23,134951 2L 94574027. 6

4、7205227. 5560841,新建GUI49-542027.9；;49, 642527. 625494043027.53149.S43527. 534 B. 644027.612,放入push按钮和绘图按钮此|l Ed it Debug Pa ra llllel r一Des IctopWindow Helpfh&ew )Open.Close Ccrrmnand WindowImport Data.Save Workspace.Set PathiPreferences.-.Pmg。Setup., PnntPrinj Selection.Ctrl+O Ctrl+WCtrl+SCtrl+PS c

5、riptCtrl+N !FunctionClassinwnne ration1System 0 bjectFigure_Variable.McidH-O .Deployment Project.,Code Generation Project.,imulink Project.1 F；. rc i sfrbrtExfr r ci se, m2 F:AGULLeairnOp e nTyt,m3 F:_AB E send seM odel. m4 F: .xerciseGUJ_Learn .rTiCtrl+QExit MATLAB3,重命名按钮为“载入 txt文件”（双击按钮，弹出属性对话框）4,

6、修改回调函数（右击 Editor）5,此时弹出保存按钮，命名保存即可6,弹出Editor对话框。其他不用管，只看按钮的回调函数7,写入代码function pushbutton1_Callback(hObject, eventdata, handles)% hObject handle to pushbuttonl (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)*.txt

7、, Select the Data file);%自己添加代码段FileName,PathName = uigetfile( file = fullfile(PathName,FileName); data = load(file);axes(handles.axes1);%以txt第一二列为横纵坐标绘图x = data(:,1);y = data(:,2);plot(x,y);% plot(data);xlabel(时间(s);ylabel(压力(MPa);grid on%实现图像可以向simulink里的图像一样可以放大缩小zoom on*谨记：axes1为图形句柄函数8,运行，单击9,出

8、现如下界面10.单击载入“txt文件”按钮，选取 PD.txt,即可实现绘图。11，生成可执行文件在 command window 里输入mcc -m GUI 文件名，回车即可.exe 文件如果想编辑现有的 GUI,（因为关闭MAT1AB后再打开只看到.fig和.m文件），则按如下顺序。/ MATLAB R2012aEdit View Debug Parallel Deaktop Window HelpClose Current FolderImport Data.Save Workspace.*产白9u 2rinrt.Print filectio1 F;i .G U LL & rnO p e

9、riT?ct m2_ F:.rciseTxtLearniriq.m1 F:.rtie etKtE rtiet.nri4 ExerciseWodeLtTiCtrl+OCtrlfWCtrlCtrl 十 P.49.643027.521249,43527.53534g.M4Q27. 660849,644528. 100049.645028. 2294E5t MAI LABCtri4-Q则又出现可以编辑的界面如果txt有多列数据，则上列程序不成立，可以按如下改动Txt文件如下：四列数据00. 2消9100. 7X8530. 00010. 3881670. 0002Q. 71 泡 90. 00020/28

10、77360. 00020. 71M初0. 00030. 2842570. 00030. 7191 纵0. 0004/0. 2813770. 00040. 7210460. 0005/0. 2779040. 00050.7227160. OOOff0. 27669 0. 00060. 722630. 00070. 2756440. 00070. 721565o. oors0. 2752440. 000B0. 7215870. 00090. 27494S0. 00090. 722481o. om0. 277086S 0010.723399o. 90110. 2783810. 00110. 7237

11、060.00120. 27903 0. 00120. 7229760.WL30. 2782720. 00130.722177Oj100140. 280551S 00140.7215420J 00150. 2937260.00150. 720E20 00160. 2872010. 00160,718620, OQL?0. 2878920. QQ170.715360,00180. 287995a cois0.7119090 00190. 283274C90.709490l 0020. 2825650. 0020,7067480. 00210. 3812410.00210.7031030 00220

12、. 2792240. 00220.6S88790 00230. 2779030.00250.6943740J00240. 2754090. 00240.691009Oi0O250. 2758370.00250. 6878870. .00260. 2767540.00260.6853440. Q0270. 2776580.00270.6831910. G0280. 2789570. 002E0. 6824270. 00290. 2789530. 00290,6832770. 0030. 2804640. 0030.6869420. 00S10. 2815160. 00310. 6938380.

13、00320. 2823830. 00320. 7018640. 003S0. 2833130. 00330,7074280. 0030. 2836580, C034S 709470. 00350. 233960. 00350. 7084740. 00360. 2826340. 00360. 706840. 00370M815320, 00370,7063 的0. 00380. 2803420. 0038o. Toms0. 00390. 2815990.。卿0. 703960. 0040. 281S410. 0040. 00410. 283刎狄、0, 0041-0, 70S4320. 00420

14、.285036 一0. 710152md4 -记事本文件田 编辑 格式通 直看Q0 篙前面、修改回调函数如下funct ion pushbut t pnl_jTalltiack ihObJ ectj veirt dat 3j handles)它% hObjset handle to pushtuttonl (see GCEO)% event d al: a reserved t c be defined in a fu! ure ver si cm of MATLAB黑 handles structure with handleis and us*r data s*? GUIEATA)用自己添加代码段FileNajnejPathNajne = uietTileC * tit5J Selethe Data film);file = fullf ile (FathName, filename)：data = load (file):