plot,plotyy是常用的画图函数,但是默认的格式通常不能准确的画出你想要的图,因此需要很多细节的修改,才能完整准确的表达你的意图。下面列举了一些常用的指令。
1e+9 ,abs(iGG)/max(abs(iGG)), "k" , "linewidth" , 2 );axis([- 5 , 5 , 0 , 1 ])xlabel( "时间/ns" );ylabel( "幅度/a.u." ); set ( get (gca, "title" ), "FontSize" , 10 , "FontName" , "宋体" );%设置标题字体大小,字型 set ( get (gca, "XLabel" ), "FontSize" , 10 , "FontName" , "Times New Roman" );%设置X坐标标题字体大小,字型 set ( get (gca, "YLabel" ), "FontSize" , 10 , "FontName" , "Times New Roman" );%设置Y坐标标题字体大小,字型 set (gca, "FontName" , "Times New Roman" , "FontSize" , 10 )%设置坐标轴字体大小,字型text( 0.3 , 1.2 , "(a)" , "FontSize" , 10 , "FontName" , "Times New Roman" ); %设置文本字型字号 set (gca, "XTick" , [ 0 10 20 30 40 50 60 70 80 90 ]) %设置X坐标轴刻度数据点位置 set (gca, "XTickLabel" ,{ "0" , "10" , "20" , "30" , "40" , "50" , "60" , "70" , "80" , "90" }) %设置X坐标轴刻度处显示的字符 set (gca, "YTick" , [- 15 - 10 - 5 0 5 10 15 ]) %设置X坐标轴刻度数据点位置 set (gca, "YTickLabel" ,{ "-15" , "-10" , "-5" , "0" , "5" , "10" , "15" }) %设置Y坐标轴刻度处显示的字符axis([ 0 , 90 ,- 20 , 20 ]) set (gca, "YTickLabel" ,[]); %只显示y坐标轴刻度,不显示y坐标轴的值; set (gca, "XTickLabel" ,[]); %只显示x坐标轴刻度,不显示x坐标轴的值; set (gca, "ytick" ,[]); %y轴的坐标值和刻度均不显示; set (gca, "xtick" ,[]); %x轴的坐标值和刻度均不显示;%单y轴plot(t*
另外,
不均匀的坐标轴
显示可以先设置对应的tick,然后设置对应ticklabel。
需要注意的是gca 和get(gca, " title")是对应不同属性的修改,不能混用。
单Y参考轴可以直接用gca,双Y轴的时候因为需要对两个对象操作,所以不太一样。在使用plotyy的时候就要注意,需要输出的对象句柄。
*1e-12,abs(T1.* T1),f *1e-12,angle(T1.* T1));[AX,H1,H2]=plotyy(f
AX代表的是坐标轴,H1,H2对应的是两个绘图线的属性。
set (AX,"FontSize", 14 ,"FontName","Times New Roman")%设置x轴、左y轴、右y轴刻度字号和字型 set (AX( 1 ),"Xcolor","k","Ycolor","k")%设置x轴、左y轴刻度字体为黑色; set (AX( 2 ),"Xcolor","k","Ycolor","k")%设置x轴、右y轴刻度字体为黑色; set (AX,"Xlim",[ 207 . 5 217 . 1 ],"xtick",[ 208 : 1 : 217 ])%设置x轴数据范围( 207 . 5 到 217 . 1 ),刻度显示( 208 , 209 , 210 ... 217 ) set (AX( 1 ),"ylim",[ 0 , 0 . 5 ],"ytick",[ 0 : 0 . 1 : 0 . 5 ])%设置左y轴数据范围( 0 到 0 . 5 ),刻度显示( 0 , 0 . 1 , 0 . 2 ... 0 . 5 ) set (AX( 2 ),"ylim",[ 0 , 3 ],"ytick",[ 0 : 1 : 3 ])%设置右y轴数据范围( 0 到 3 ),刻度显示( 0 , 1 , 2 , 3 ) set (H 1 ,"Linestyle","-","color","r","Linewidth", 2 . 5 );%设置第一条曲线的线型、颜色、粗细 line (x,y,"linestyle","-","color","r","Linewidth", 2 . 5 ,"parent",AX( 1 ));%在第一条曲线上再画一条曲线。 set (H 2 ,"Linestyle","-.","color","b","Linewidth", 2 . 5 );%设置第二条曲线的线型、颜色、粗细 set (get(AX( 1 ),"Ylabel"),"string","Amplitude(a.u.)","FontSize", 10 ,"FontName","Times New Roman","Position",[ 0 0 0 ]);%设置左y轴标题字号字型 set (get(AX( 2 ),"Ylabel"),"string","Phase(rad)","FontSize", 10 ,"FontName","Times New Roman");%设置右y轴标题字号字型 set (get(AX( 1 ),"Xlabel"),"string","Optical frequency(THz)","FontSize", 10 ,"FontName","Times New Roman");%设置x坐标标题字体大小,字型
同样需要注意的是
AX, AX(1)与set(AX(1),"Ylabel")的使用区别。